1.1 This standard applies to the classification and designation of powder metallurgy materials. 1.2 All powder metallurgy materials listed in national standards and professional standards (departmental standards) should be classified and designated in accordance with the provisions of this standard. Note: Powder metallurgy materials listed in enterprise standards are generally not assigned unified designations. GB/T 4309-1984 Classification and Designation of Powder Metallurgy Materials GB/T4309-1984 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Classification and designation for powder metallurgy materials
1 Scope of application
1.1 This standard applies to the classification and designation of powder metallurgy materials. UDC 621.762.001
GB ±309—84
1.2 All powder metallurgy materials listed in national standards and professional standards (ministerial standards) should be classified and designated in accordance with the provisions of this standard.
Note: Powder metallurgy materials listed in enterprise standards are generally not designated in a unified designation. 2 Classification
2.1 Powder metallurgy materials are divided into nine categories according to their uses and characteristics, including structural materials, friction materials and antifriction materials, porous materials, tool materials, refractory metals and heavy alloys, corrosion-resistant materials and heat-resistant materials: electrical materials; magnetic materials: other materials.
2.2 The major categories of powder metallurgy materials are divided into several subcategories according to their materials and uses. 2.2.1 Structural materials: iron and iron-based alloys, carbon structural steel: alloy structural steel: copper and copper alloys, aluminum alloys.
2.2.2 Friction materials and anti-friction materials:
Iron-based friction materials;
Copper-based friction materials!
Iron-based anti-friction materials:
Copper-based anti-friction materials,
Aluminum-based anti-friction materials:
2.2.3 Porous materials:
Iron and iron-based alloys;
Stainless steel
Copper and copper alloys,
National Bureau of Standards 1984·03-27 Issued
1985-03-01 Implementation
Titanium and titanium alloys 1
Nickel and nickel alloys,
Tungsten and tungsten alloys 1
Porous molten compound materials.
2.2.4 Tool materials,
Cemented carbide
Steel-bonded cemented carbide!
Metal ceramics and ceramics;
Tool steel.
2.2.6 Melting metals and heavy alloys:
Tungsten and tungsten alloys,
Molybdenum and molybdenum alloys
Molybdenum, niobium, zirconium and their alloys!
Heavy alloys.
2.2.6 Corrosion-resistant and heat-resistant materials:
Stainless steel and heat-resistant steel
High-temperature alloys,
Titanium and titanium alloys,
Metal ceramics.
2.2.7 Electrical materials;
Tungsten-based electrical contact materials;
Molybdenum-based electrical contact materials,
Copper-based electrical contact materials;
Silver-based electrical contact materials
Collector materials,
Electric vacuum materials.
2.2.8 Magnetic materials:
Soft magnetic ferrite:
Hard magnetic ferrite!
Special magnetic ferrite!
Soft magnetic metals and alloys 1
Hard magnetic alloys
Special magnetic alloys.
2.2.9 Other materials
Materials such as beryllium and zirconium;
Electrical and magnetic functional materials.
3 Brand designation method
3.1 Designation method
GB 4309—84
This standard adopts a six-digit symbol system consisting of Chinese phonetic letters and Arabic numerals to indicate the brand of materials. The general form is: Fxxxxα
The first digit: the Chinese phonetic letter "F" represents the powder metallurgy material; the second digit: the Arabic numerals "0, 1, 2, 3, 4" represent the major category to which the material belongs (see Table 1); the third digit: the Arabic numerals "0, 1, 2, 3, 4" represent the minor category to which each material belongs in the major category. GB 4308-—84
The fourth and fifth digits: Arabic numerals "00, 01, 02, 03, 04…." represent the sequence number of each material in the same subcategory; the sixth digit: Chinese phonetic letters represent the state or characteristics of the material (see Table 2). Table 1
Meaning of symbols
Structural materials
Friction materials and anti-friction materials
Porous materials
Upper tool materials
Melting metals and heavy alloys
Corrosion-resistant materials and heat-resistant materials
Electrical materials
Magnetic materials
Other materials
(blank)
Meaning of symbols
Relative density of materials<67.5%
Relative density of materials>67.5~72.5%
Relative density of materials>72.5～77.5%
Relative density of materials>77.5~82.5%
Relative density of materials>82.5~87.5%
Relative density of materials>87.5~92.5%
Relative density of materials>92.5～97.5%
3.2 Expression methods and examples of various materials
GB 4$09-84
Continued Table 2
Meaning of symbols
Dense materials made by hot forming process
Post-sintering treatment state
Sintering state
Material made by melt infiltration process
Materials used for aldehyde grinding
Materials used for braking
Materials used for clutch mold
Porous materials used for filtration or separationPorous materials used for non-filtration or separationImproved materials
Improved materials
Improved materials
(spare)| |tt||(spare)
(spare)
(spare)
(spare)
(spare)
(spare)
3.2.1 Structural materials
General formula:
Meaning of symbols
F powder metallurgical materials
Meaning of derivative numbers
0-Structural materials
GB4309--84
Meaning of symbols
Classification of structural materials
0-Iron and iron-based alloys
1 Carbon structural steel
2 ~ Alloy structural steel
3-(Vacancy)
4-(Vacancy)
5-(Vacancy)
6-Zhao and copper alloy
7-Lead alloy
8-(Vacancy)
9-(Vacancy)
Meaning of symbols
Sequence number (00-99)
Meaning of symbols
State or characteristics of materials
Example 1 "F00××T" represents sintered iron or iron-based alloy structural materials, with a relative density of >82.5~87.5%. Example 2 "F02××T" represents sintered alloy structural steel, with a relative density of >82.5~87.5%. Example 3 "F06××U" represents sintered copper or copper alloy structural materials, with a relative density of >87.5~92.5%. 3.2.2 Friction materials and anti-friction materials Tongwu: The meaning of symbols F, powder metallurgical materials The meaning of symbols 1- Friction materials and anti-friction materials The meaning of symbols Classification of friction materials and anti-friction materials 0 - Iron-based friction materials 1 - Copper-based friction materials 2 - (penetration) 3 (empty position) 4 - (empty position) Iron-based anti-friction materials 6 ~ Copper-based anti-friction materials 7 - Aluminum-based anti-friction materials Another (firm position) 9 - (empty sign) Example 1 "F10××月" means sintered iron-based friction material used for braking. The meaning of the symbol
Sequence number (00-99)
The meaning of the symbol
Material state or characteristics
GB4308-8 4
Example 2 "F11××L" indicates sintered copper-based friction material used in clutches. Example 3 "F16××Z" indicates copper-based anti-friction material in a sintered post-treatment state, i.e. sintered copper-based oil-containing bearing material. 3.2.3 Porous materials
General formula:
Meaning of symbols
F-Powder metallurgy materials
Meaning of symbols
2 -Porous materials
Meaning of symbols
Classification of porous materials
0 -Iron and iron-based alloys
1 -Stainless steel
2 -Copper alloys
3 -Titanium and titanium alloys
4 -Brass and bromine alloys
5 -Tungsten alloys
6 -Refractory compound porous materials
7 -(Vacancy)
8 -(Vacancy)
9 -(Vacancy)
Meaning of symbols
Sequence number (00~99)
"F21××G" indicates sintered stainless steel porous material used for filtration or separation. Example 1
Example 2 "F23××F\ represents sintered titanium or titanium alloy porous materials used for non-filtration or separation. Example 3 "F24××G" represents sintered nickel or nickel alloy porous materials used for filtration or separation. 3.2.4 Tool materials
General formula:
Meaning of symbols
F-Powder metallurgy materials
Meaning of symbols
Meaning of symbols
Classification of tool materials
0-Steel bonded carbide
1-(Vacancy)
2-(Vacancy)
3-(Vacancy)
3-T Tool materials
4-(Vacancy)
5- (Vacant)
6-Metal ceramics and ceramics
7-Tool steel
8-(Vacant)
9—(Vacant)
Symbol meaning
Sequence number (00-99)
Symbol meaning
Material state or characteristics
Symbol meaning
Material state or characteristics
Note: The representation method of hard alloy grades and codes shall comply with the provisions of GB2075-80 "Classification and grouping code of hard alloy for cutting tools" and other standards. Example 1 "F30××Z\ indicates steel-bonded hard alloy treated after sintering. CB4309-84
Example 2 "F 36××J" indicates sintered metal ceramic or ceramic tool material. Example 3: "F37××X represents a dense tool steel material made by hot forming process. 3.2.5 Refractory metals and heavy alloys General formula: Meaning of symbols F- Powder metallurgy materials Meaning of symbols 4- Refractory metals and heavy alloys Meaning of symbols Classification of refractory metals and heavy alloys 0- Tungsten and tungsten alloys 1 - (Vacancy) 2- Pin and pin alloys 3 - (Vacancy) 4- Button, rudder, zircon and their alloys 5- (Vacancy) 6 - (Vacancy) 7- Fumed alloys 8 -(Vacancy)
9-(Vacancy)
Symbol meaning
Sequence number (00-99)
Example 1 "F40××E" indicates tungsten alloy refractory metal material made by infiltration process. Example 2 "F47××J\ indicates heavy alloy in sintered state. 3.2.6 Corrosion-resistant materials and heat-resistant materials
General formula:
Symbol meaning
F-Powder metallurgy materials
Symbol meaning
5-Corrosion-resistant materials and
Heat-resistant materials
Symbol meaning
Classification of corrosion-resistant materials and heat-resistant materials
0-Stainless steel and heat-resistant steel
1-(Vacancy)
2 -High alloy
3 -(Firm position)
4 -(Sign position)
5-Titanium and titanium alloys
6-(Vacancy)
7—(Vacancy)
8-Metal ceramics
9-(Vacancy)
Meaning of symbols
Sequence bow (00-99)
Example 1 "F50××U* indicates sintered stainless steel or heat-resistant steel, with a relative density of >87.5~92.5%. Meaning of symbols
Material state or characteristics
Meaning of symbols
Material state or characteristics
GB 4309-84
Example 2 "F52×××" indicates a dense high-temperature alloy made by hot forming process. Example 3 "F58××" indicates a sintered metal ceramic material. 3.2.7 Electrical materials
General formula:
Meaning of symbols
F - Powder metallurgy materials
Meaning of symbols
6- Electrical materials
Commercial meaning of symbols
Classification of electrical materials
0- Ming-based electrical contact materials
1- Molybdenum-based electrical contact materials
2- Copper-based electrical contact materials
3- Silver-based electrical contact materials
4- (Vacancy)
5- Collector materials
6- (Decreasing)
7- (Vacancy)
8-Electro-vacuum materials
9 -(vacancy)
Symbol meaning
Serial number (()～99)
Example 1 "F60××E." indicates tungsten-based electrical contact material made by melt infiltration process. Example 2 "F63××" indicates sintered silver-based electrical contact material. Example 3 "F65××S" indicates sintered collector material, relative density>77.5~82.5% 3. 2. 8 Magnetic materials
General formula:
Symbol meaning
F - Powder metallurgy materials
The meaning of the symbol
7 Magnetic materials
The meaning of the symbol
Classification of magnetic materials
0- Soft magnetic ferrite
1- Hard magnetic ferrite
2- Special magnetic ferrite
3- (Vacancy)
4- Soft magnetic metals and alloys
5- Hard magnetic alloys
6- (Vacancy)|| tt||7-Special magnetic alloy
8-(Vacancy)
9-(Vacancy)
Example 1 "F70××" indicates sintered soft magnetic ferrite.
Meaning of symbols
Serial number (00-99)
Meaning of symbols
State or characteristics of materials
Meaning of symbols
State or characteristics of materials
GB 430984
Example 2 "F75××Z" indicates a hard magnetic alloy that has been sintered and treated. a.2.9 Other materials
General formula:
Symbol meaning
F-Powder metallurgy materials
Symbol meaning
8-Other materials
Symbol meaning
Classification of other materials
0-Plating, zirconium and other materials
1-(Vacancy)
2 (Vacancy)
3-(Vacancy)
4-(Vacancy)
5 Electrical and magnetic functional materials
6 -(Vacancy)
7-(Vacancy)
8-(Vacancy)
9 - (blank)
Example 1 "F80××X" indicates dense beryllium material made by hot forming process. 4 Classification of materials and compilation and management of grades 4.1 Powder metallurgy materials should be uniformly classified, and grades should be uniformly compiled and managed. Symbol meaning
Sequence number (00- 99)
Meaning of symbols
State or characteristics of materials
4.2 The classification and designation of materials shall be uniformly carried out by the national standard administration department (or its authorized unit) together with relevant units in accordance with the principles and methods specified in this standard.
4.3 For powder metallurgy materials that meet the requirements of this standard and need to be uniformly designated, the units and departments responsible for drafting the technical standards of a specific material shall propose suggestions for the designation, and the national standard administration department (or its authorized unit) shall be responsible for reviewing and verifying, and finally determining the uniform designation.
Additional notes:
This standard was proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard was drafted by the General Iron and Steel Research Institute of the Ministry of Metallurgy and the Beijing Powder Metallurgy Research Institute. The main drafters of this standard are Jiang Zhenchun and Wu Rongwei.3 For powder metallurgy materials that meet the requirements of this standard and need to compile a unified grade, the units and departments responsible for drafting the technical standards for a specific material shall propose suggestions for compiling grades, and the national standard management department (or its authorized unit) shall be responsible for reviewing and verifying, and finally determine the unified grade.
Additional Notes:
This standard is proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard was drafted by the General Iron and Steel Research Institute of the Ministry of Metallurgy and the Beijing Powder Metallurgy Research Institute. The main drafters of this standard are Jiang Zhenchun and Wu Rongwei.3 For powder metallurgy materials that meet the requirements of this standard and need to compile a unified grade, the units and departments responsible for drafting the technical standards for a specific material shall propose suggestions for compiling grades, and the national standard management department (or its authorized unit) shall be responsible for reviewing and verifying, and finally determine the unified grade.
Additional Notes:
This standard is proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard was drafted by the General Iron and Steel Research Institute of the Ministry of Metallurgy and the Beijing Powder Metallurgy Research Institute. The main drafters of this standard are Jiang Zhenchun and Wu Rongwei.3 For powder metallurgy materials that meet the requirements of this standard and need to compile a unified grade, the units and departments responsible for drafting the technical standards for a specific material shall propose suggestions for compiling grades, and the national standard management department (or its authorized unit) shall be responsible for reviewing and verifying, and finally determine the unified grade.
Additional Notes:
This standard is proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard was drafted by the General Iron and Steel Research Institute of the Ministry of Metallurgy and the Beijing Powder Metallurgy Research Institute. The main drafters of this standard are Jiang Zhenchun and Wu Rongwei.3 For powder metallurgy materials that meet the requirements of this standard and need to compile a unified grade, the units and departments responsible for drafting the technical standards for a specific material shall propose suggestions for compiling grades, and the national standard management department (or its authorized unit) shall be responsible for reviewing and verifying, and finally determine the unified grade.
Additional Notes:
This standard is proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard was drafted by the General Iron and Steel Research Institute of the Ministry of Metallurgy and the Beijing Powder Metallurgy Research Institute. The main drafters of this standard are Jiang Zhenchun and Wu Rongwei.4 Tool materials
General formula:
The meaning of symbols
F-Powder metallurgy materials
The meaning of symbols
The meaning of symbols
Classification of tool materials
0-Steel bonded carbide
1-(Vacancy)
2-(Vacancy)
3-(Vacancy)
3-T Tool materials
4-(Vacancy)
5- (Vacant)
6-Metal ceramics and ceramics
7-Tool steel
8-(Vacant)
9—(Vacant)
Symbol meaning
Sequence number (00-99)
Symbol meaning
Material state or characteristics
Symbol meaning
Material state or characteristics
Note: The representation method of hard alloy grades and codes shall comply with the provisions of GB2075-80 "Classification and grouping code of hard alloy for cutting tools" and other standards. Example 1 "F30××Z\ indicates steel-bonded hard alloy treated after sintering. CB4309-84
Example 2 "F 36××J" indicates sintered metal ceramic or ceramic tool material. Example 3 "F37××X" indicates tool steel dense material made by hot forming process. 3.2.5 Refractory metals and heavy alloys
General formula:
Meaning of symbols
F-Powder metallurgy materials
Meaning of symbols
4-Refractory metals
and heavy alloys
Meaning of symbols
Classification of refractory metals and heavy alloys
0-Tungsten and tungsten alloys
1-(Vacancy)
2-Pin and pin alloys
3-(Vacancy)
4-Button, rudder, zircon and their alloys
5-(Vacancy)
6-(Vacancy)
7-Fumed alloys
8-(Vacancy)
9-(Vacancy)
Meaning of symbols
Sequence number (00 -99）
Example 1 "F40××E" indicates tungsten alloy refractory metal material made by melt infiltration process. Example 2 "F47××J\ indicates heavy alloy in sintered state. 3.2.6 Corrosion-resistant materials and heat-resistant materials
General formula:
Meaning of symbols
F-Powder metallurgy materials
Meaning of symbols
5-Corrosion-resistant materials and
Heat-resistant materials
Meaning of symbols
Classification of corrosion-resistant materials and heat-resistant materials
0-Stainless steel and heat-resistant steel
1-(Vacancy)
2-High alloy
3-(Firm position)
4 -(Sign position)
5-Titanium and titanium alloy
6-(Vacancy)
7—(Vacancy)
8-Metal ceramics
9-(Vacancy)
Symbol meaning
Sequence bow (00-99)
Example 1 "F50××U* indicates sintered stainless steel or heat-resistant steel, with a relative density of >87.5~92.5%. Symbol meaning
Material state or characteristics
Symbol meaning
Material state or characteristics
GB 4309—84
Example 2 “F52×××” indicates a dense high-temperature alloy made by hot forming process. Example 3 “F58××” indicates a sintered metal ceramic material. 3.2.7 Electrical materials
General formula:
Symbol meaning
F - Powder metallurgy materials
Symbol meaning
6-Electrical materials
Symbol commercial meaning
Classification of electrical materials
0-Ming-based electrical contact materials
1 - Molybdenum-based electrical contact materials
2 - Copper-based electrical contact materials
3 - Silver-based electrical contact materials
4- (Vacancy)
5 - Collector materials
6 -(Decreasing)
7-(Vacancy)
8-Electro-vacuum materials
9 -(Vacancy)
Meaning of symbols
Serial number (()～99)
Example 1 "F60××E." indicates tungsten-based electrical contact material made by melt infiltration process. Example 2 "F63××"" indicates sintered silver-based electrical contact material. Example 3 "F65××S" indicates sintered collector material, relative density>77.5~82.5% 3. 2. 8 Magnetic materials
General formula:
Meaning of symbols
F - Powder metallurgy materials
The meaning of the symbol
7 Magnetic materials
The meaning of the symbol
Classification of magnetic materials
0- Soft magnetic ferrite
1- Hard magnetic ferrite
2- Special magnetic ferrite
3- (Vacancy)
4- Soft magnetic metals and alloys
5- Hard magnetic alloys
6- (Vacancy)|| tt||7-Special magnetic alloy
8-(Vacancy)
9-(Vacancy)
Example 1 "F70××" indicates soft magnetic ferrite in sintered state&
Meaning of symbols
Serial number (00-99)
Meaning of symbols
State or characteristics of materials
Meaning of symbols
State or characteristics of materials
GB 430984
Example 2 "F75××Z" indicates hard magnetic alloy after sintering treatment. a.2.9 Other materials
General formula:
Meaning of symbols
F- Powder metallurgy materials
Meaning of symbols
8-Other materials
Meaning of symbols
Classification of other materials
0- Plating, zirconium and other materials
1- (Vacancy)
2 (Vacancy)
3- (Vacancy)
4- (Vacancy)
5 Electrical and magnetic functional materials
6 - (Vacancy)
7- (Vacancy)
8- (Vacancy)
9 - (Vacancy)
Example 1 "F80××X" represents a dense beryllium material made by hot forming process. 4 Classification of materials and preparation and management of grades 4.1 Powder metallurgy materials shall be uniformly classified, and grades shall be uniformly prepared and managed. Meaning of symbols
Sequence number (00-99)
Meaning of symbols
State or characteristics of materials
4.2 The classification of materials and preparation of grades shall be uniformly carried out by the national standard administration department (or its authorized unit) together with relevant units in accordance with the principles and methods specified in this standard.
4.3 For powder metallurgy materials that meet the requirements of this standard and need to be uniformly prepared, the units and departments responsible for drafting the technical standards of a specific material shall propose suggestions for the preparation of grades, and the national standard administration department (or its authorized unit) shall be responsible for reviewing and verifying, and finally determine the uniform grade.
Additional remarks:
This standard was proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard was drafted by the General Iron and Steel Research Institute of the Ministry of Metallurgy and the Beijing Powder Metallurgy Research Institute. The main drafters of this standard are Jiang Zhenchun and Wu Rongwei.4 Tool materials
General formula:
The meaning of symbols
F-Powder metallurgy materials
The meaning of symbols
The meaning of symbols
Classification of tool materials
0-Steel bonded carbide
1-(Vacancy)
2-(Vacancy)
3-(Vacancy)
3-T Tool materials
4-(Vacancy)
5- (Vacant)
6-Metal ceramics and ceramics
7-Tool steel
8-(Vacant)
9—(Vacant)
Symbol meaning
Sequence number (00-99)
Symbol meaning
Material state or characteristics
Symbol meaning
Material state or characteristics
Note: The representation method of hard alloy grades and codes shall comply with the provisions of GB2075-80 "Classification and grouping code of hard alloy for cutting tools" and other standards. Example 1 "F30××Z\ indicates steel-bonded hard alloy treated after sintering. CB4309-84
Example 2 "F 36××J" indicates sintered metal ceramic or ceramic tool material. Example 3 "F37××X" indicates tool steel dense material made by hot forming process. 3.2.5 Refractory metals and heavy alloys
General formula:
Meaning of symbols
F-Powder metallurgy materials
Meaning of symbols
4-Refractory metals
and heavy alloys
Meaning of symbols
Classification of refractory metals and heavy alloys
0-Tungsten and tungsten alloys
1-(Vacancy)
2-Pin and pin alloys
3-(Vacancy)
4-Button, rudder, zircon and their alloys
5-(Vacancy)
6-(Vacancy)
7-Fumed alloys
8-(Vacancy)
9-(Vacancy)
Meaning of symbols
Sequence number (00 -99）
Example 1 "F40××E" indicates tungsten alloy refractory metal material made by melt infiltration process. Example 2 "F47××J\ indicates heavy alloy in sintered state. 3.2.6 Corrosion-resistant materials and heat-resistant materials
General formula:
Meaning of symbols
F-Powder metallurgy materials
Meaning of symbols
5-Corrosion-resistant materials and
Heat-resistant materials
Meaning of symbols
Classification of corrosion-resistant materials and heat-resistant materials
0-Stainless steel and heat-resistant steel
1-(Vacancy)
2-High alloy
3-(Firm position)
4 -(Sign position)
5-Titanium and titanium alloy
6-(Vacancy)
7—(Vacancy)
8-Metal ceramics
9-(Vacancy)
Symbol meaning
Sequence bow (00-99)
Example 1 "F50××U* indicates sintered stainless steel or heat-resistant steel, with a relative density of >87.5~92.5%. Symbol meaning
Material state or characteristics
Symbol meaning
Material state or characteristics
GB 4309—84
Example 2 “F52×××” indicates a dense high-temperature alloy made by hot forming process. Example 3 “F58××” indicates a sintered metal ceramic material. 3.2.7 Electrical materials
General formula:
Symbol meaning
F - Powder metallurgy materials
Symbol meaning
6-Electrical materials
Symbol commercial meaning
Classification of electrical materials
0-Ming-based electrical contact materials
1 - Molybdenum-based electrical contact materials
2 - Copper-based electrical contact materials
3 - Silver-based electrical contact materials
4- (Vacancy)
5 - Collector materials
6 -(Decreasing)
7-(Vacancy)
8-Electro-vacuum materials
9 -(Vacancy)
Meaning of symbols
Serial number (()～99)
Example 1 "F60××E." indicates tungsten-based electrical contact material made by melt infiltration process. Example 2 "F63××"" indicates sintered silver-based electrical contact material. Example 3 "F65××S" indicates sintered collector material, relative density>77.5~82.5% 3. 2. 8 Magnetic materials
General formula:
Meaning of symbols
F - Powder metallurgy materials
The meaning of the symbol
7 Magnetic materials
The meaning of the symbol
Classification of magnetic materials
0- Soft magnetic ferrite
1- Hard magnetic ferrite
2- Special magnetic ferrite
3- (Vacancy)
4- Soft magnetic metals and alloys
5- Hard magnetic alloys
6- (Vacancy)|| tt||7-Special magnetic alloy
8-(Vacancy)
9-(Vacancy)
Example 1 "F70××" indicates soft magnetic ferrite in sintered state&
Meaning of symbols
Serial number (00-99)
Meaning of symbols
State or characteristics of materials
Meaning of symbols
State or characteristics of materials
GB 430984
Example 2 "F75××Z" indicates hard magnetic alloy after sintering treatment. a.2.9 Other materials
General formula:
Meaning of symbols
F- Powder metallurgy materials
Meaning of symbols
8-Other materials
Meaning of symbols
Classification of other materials
0- Plating, zirconium and other materials
1- (Vacancy)
2 (Vacancy)
3- (Vacancy)
4- (Vacancy)
5 Electrical and magnetic functional materials
6 - (Vacancy)
7- (Vacancy)
8- (Vacancy)
9 - (Vacancy)
Example 1 "F80××X" represents a dense beryllium material made by hot forming process. 4 Classification of materials and preparation and management of grades 4.1 Powder metallurgy materials shall be uniformly classified, and grades shall be uniformly prepared and managed. Meaning of symbols
Sequence number (00-99)
Meaning of symbols
State or characteristics of materials
4.2 The classification of materials and preparation of grades shall be uniformly carried out by the national standard administration department (or its authorized unit) together with relevant units in accordance with the principles and methods specified in this standard.
4.3 For powder metallurgy materials that meet the requirements of this standard and need to be uniformly prepared, the units and departments responsible for drafting the technical standards of a specific material shall propose suggestions for the preparation of grades, and the national standard administration department (or its authorized unit) shall be responsible for reviewing and verifying, and finally determine the uniform grade.
Additional remarks:
This standard is proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard was drafted by the General Iron and Steel Research Institute of the Ministry of Metallurgy and the Beijing Powder Metallurgy Research Institute. The main drafters of this standard are Jiang Zhenchun and Wu Rongwei.5 Refractory metals and heavy alloys
General formula:
The meaning of symbols
F-Powder metallurgy materials
The meaning of symbols
4-Refractory metals
and heavy alloys
The meaning of symbols
Classification of refractory metals and heavy alloys
0-Tungsten and tungsten alloys
1-(Vacancy)
2-Pin and pin alloys
3-(Vacancy)
4-Button, rudder, zircon and their alloys
5-(Vacancy)
6-(Vacancy)
7-Fumed alloys
8-(Vacancy)
9-(Vacancy)
The meaning of symbols
Sequence number (00 -99）
Example 1 "F40××E" indicates tungsten alloy refractory metal material made by melt infiltration process. Example 2 "F47××J\ indicates heavy alloy in sintered state. 3.2.6 Corrosion-resistant materials and heat-resistant materials
General formula:
Meaning of symbols
F-Powder metallurgy materials
Meaning of symbols
5-Corrosion-resistant materials and
Heat-resistant materials
Meaning of symbols
Classification of corrosion-resistant materials and heat-resistant materials
0-Stainless steel and heat-resistant steel
1-(Vacancy)
2-High alloy
3-(Firm position)
4 -(Sign position)
5-Titanium and titanium alloy
6-(Vacancy)
7—(Vacancy)
8-Metal ceramics
9-(Vacancy)
Symbol meaning
Sequence bow (00-99)
Example 1 "F50××U* indicates sintered stainless steel or heat-resistant steel, with a relative density of >87.5~92.5%. Symbol meaning
Material state or characteristics
Symbol meaning
Material state or characteristics
GB 4309—84
Example 2 “F52×××” indicates a dense high-temperature alloy made by hot forming process. Example 3 “F58××” indicates a sintered metal ceramic material. 3.2.7 Electrical materials
General formula:
Symbol meaning
F - Powder metallurgy materials
Symbol meaning
6-Electrical materials
Symbol commercial meaning
Classification of electrical materials
0-Ming-based electrical contact materials
1 - Molybdenum-based electrical contact materials
2 - Copper-based electrical contact materials
3 - Silver-based electrical contact materials
4- (Vacancy)
5 - Collector materials
6 -(Decreasing)
7-(Vacancy)
8-Electro-vacuum materials
9 -(Vacancy)
Meaning of symbols
Serial number (()～99)
Example 1 "F60××E." indicates tungsten-based electrical contact material made by melt infiltration process. Example 2 "F63××"" indicates sintered silver-based electrical contact material. Example 3 "F65××S" indicates sintered collector material, relative density>77.5~82.5% 3. 2. 8 Magnetic materials
General formula:
Meaning of symbols
F - Powder metallurgy materials
The meaning of the symbol
7 Magnetic materials
The meaning of the symbol
Classification of magnetic materials
0- Soft magnetic ferrite
1- Hard magnetic ferrite
2- Special magnetic ferrite
3- (Vacancy)
4- Soft magnetic metals and alloysbZxz.net
5- Hard magnetic alloys
6- (Vacancy)|| tt||7-Special magnetic alloy
8-(Vacancy)
9-(Vacancy)
Example 1 "F70××" indicates soft magnetic ferrite in sintered state&
Meaning of symbols
Serial number (00-99)
Meaning of symbols
State or characteristics of materials
Meaning of symbols
State or characteristics of materials
GB 430984
Example 2 "F75××Z" indicates hard magnetic alloy after sintering treatment. a.2.9 Other materials
General formula:
Meaning of symbols
F- Powder metallurgy materials
Meaning of symbols
8-Other materials
Meaning of symbols
Classification of other materials
0- Plating, zirconium and other materials
1- (Vacancy)
2 (Vacancy)
3- (Vacancy)
4- (Vacancy)
5 Electrical and magnetic functional materials
6 - (Vacancy)
7- (Vacancy)
8- (Vacancy)
9 - (Vacancy)
Example 1 "F80××X" represents a dense beryllium material made by hot forming process. 4 Classification of materials and preparation and management of grades 4.1 Powder metallurgy materials shall be uniformly classified, and grades shall be uniformly prepared and managed. Meaning of symbols
Sequence number (00-99)
Meaning of symbols
State or characteristics of materials
4.2 The classification of materials and preparation of grades shall be uniformly carried out by the national standard administration department (or its authorized unit) together with relevant units in accordance with the principles and methods specified in this standard.
4.3 For powder metallurgy materials that meet the requirements of this standard and need to be uniformly prepared, the units and departments responsible for drafting the technical standards of a specific material shall propose suggestions for the preparation of grades, and the national standard administration department (or its authorized unit) shall be responsible for reviewing and verifying, and finally determine the uniform grade.
Additional remarks:
This standard is proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard was drafted by the General Iron and Steel Research Institute of the Ministry of Metallurgy and the Beijing Powder Metallurgy Research Institute. The main drafters of this standard are Jiang Zhenchun and Wu Rongwei.5 Refractory metals and heavy alloys
General formula:
The meaning of symbols
F-Powder metallurgy materials
The meaning of symbols
4-Refractory metals
and heavy alloys
The meaning of symbols
Classification of refractory metals and heavy alloys
0-Tungsten and tungsten alloys
1-(Vacancy)
2-Pin and pin alloys
3-(Vacancy)
4-Button, rudder, zircon and their alloys
5-(Vacancy)
6-(Vacancy)
7-Fumed alloys
8-(Vacancy)
9-(Vacancy)
The meaning of symbols
Sequence number (00 -99）
Example 1 "F40××E" indicates tungsten alloy refractory metal material made by melt infiltration process. Example 2 "F47××J\ indicates heavy alloy in sintered state. 3.2.6 Corrosion-resistant materials and heat-resistant materials
General formula:
Meaning of symbols
F-Powder metallurgy materials
Meaning of symbols
5-Corrosion-resistant materials and
Heat-resistant materials
Meaning of symbols
Classification of corrosion-resistant materials and heat-resistant materials
0-Stainless steel and heat-resistant steel
1-(Vacancy)
2-High alloy
3-(Firm position)
4 -(Sign position)
5-Titanium and titanium alloy
6-(Vacancy)
7—(Vacancy)
8-Metal ceramics
9-(Vacancy)
Symbol meaning
Sequence bow (00-99)
Example 1 "F50××U* indicates sintered stainless steel or heat-resistant steel, with a relative density of >87.5~92.5%. Symbol meaning
Material state or characteristics
Symbol meaning
Material state or characteristics
GB 4309—84
Example 2 “F52×××” indicates a dense high-temperature alloy made by hot forming process. Example 3 “F58××” indicates a sintered metal ceramic material. 3.2.7 Electrical materials
General formula:
Symbol meaning
F - Powder metallurgy materials
Symbol meaning
6-Electrical materials
Symbol commercial meaning
Classification of electrical materials
0-Ming-based electrical contact materials
1 - Molybdenum-based electrical contact materials
2 - Copper-based electrical contact materials
3 - Silver-based electrical contact materials
4- (Vacancy)
5 - Collector materials
6 -(Decreasing)
7-(Vacancy)
8-Electro-vacuum materials
9 -(Vacancy)
Meaning of symbols
Serial number (()～99)
Example 1 "F60××E." indicates tungsten-based electrical contact material made by melt infiltration process. Example 2 "F63××"" indicates sintered silver-based electrical contact material. Example 3 "F65××S" indicates sintered collector material, relative density>77.5~82.5% 3. 2. 8 Magnetic materials
General formula:
Meaning of symbols
F - Powder metallurgy materials
The meaning of the symbol
7 Magnetic materials
The meaning of the symbol
Classification of magnetic materials
0- Soft magnetic ferrite
1- Hard magnetic ferrite
2- Special magnetic ferrite
3- (Vacancy)
4- Soft magnetic metals and alloys
5- Hard magnetic alloys
6- (Vacancy)|| tt||7-Special magnetic alloy
8-(Vacancy)
9-(Vacancy)
Example 1 "F70××" indicates soft magnetic ferrite in sintered state&
Meaning of symbols
Serial number (00-99)
Meaning of symbols
State or characteristics of materials
Meaning of symbols
State or characteristics of materials
GB 430984
Example 2 "F75××Z" indicates hard magnetic alloy after sintering treatment. a.2.9 Other materials
General formula:
Meaning of symbols
F- Powder metallurgy materials
Meaning of symbols
8-Other materials
Meaning of symbols
Classification of other materials
0- Plating, zirconium and other materials
1- (Vacancy)
2 (Vacancy)
3- (Vacancy)
4- (Vacancy)
5 Electrical and magnetic functional materials
6 - (Vacancy)
7- (Vacancy)
8- (Vacancy)
9 - (Vacancy)
Example 1 "F80××X" represents a dense beryllium material made by hot forming process. 4 Classification of materials and preparation and management of grades 4.1 Powder metallurgy materials shall be uniformly classified, and grades shall be uniformly prepared and managed. Meaning of symbols
Sequence number (00-99)
Meaning of symbols
State or characteristics of materials
4.2 The classification of materials and preparation of grades shall be uniformly carried out by the national standard administration department (or its authorized unit) together with relevant units in accordance with the principles and methods specified in this standard.
4.3 For powder metallurgy materials that meet the requirements of this standard and need to be uniformly prepared, the units and departments responsible for drafting the technical standards of a specific material shall propose suggestions for the preparation of grades, and the national standard administration department (or its authorized unit) shall be responsible for reviewing and verifying, and finally determine the uniform grade.
Additional remarks:
This standard was proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard was drafted by the General Iron and Steel Research Institute of the Ministry of Metallurgy and the Beijing Powder Metallurgy Research Institute. The main drafters of this standard are Jiang Zhenchun and Wu Rongwei." indicates tungsten-based electrical contact material made by melt infiltration process. Example 2 "F63××" indicates sintered silver-based electrical contact material. Example 3 "F65××S" indicates sintered collector material, relative density>77.5~82.5% 3. 2. 8 Magnetic materials
General formula:
Meaning of symbols
F - Powder metallurgy materials
The meaning of the symbol
7 Magnetic materials
Meaning of symbols
Classification of magnetic materials
0-Soft magnetic ferrite
1-Hard magnetic ferrite
2-Special magnetic ferrite
3-(Vacancy)
4-Soft magnetic metals and alloys
5-Hard magnetic alloys
6-(Vacancy)|| tt||7-Special magnetic alloy
8-(Vacancy)
9-(Vacancy)
Example 1 "F70××" indicates sintered soft magnetic ferrite.
Meaning of symbols
Serial number (00-99)
Meaning of symbols
State or characteristics of materials
Meaning of symbols
State or characteristics of materials
GB 430984
Example 2 "F75××Z" indicates a hard magnetic alloy that has been sintered and treated. a.2.9 Other materials
General formula:
Symbol meaning
F-Powder metallurgy materials
Symbol meaning
8-Other materials
Symbol meaning
Classification of other materials
0-Plating, zirconium and other materials
1-(Vacancy)
2 (Vacancy)
3-(Vacancy)
4-(Vacancy)
5 Electrical and magnetic functional materials
6 -(Vacancy)
7-(Vacancy)
8-(Vacancy)
9 - (blank)
Example 1 "F80××X" indicates dense beryllium material made by hot forming process. 4 Classification of materials and compilation and management of grades 4.1 Powder metallurgy materials should be uniformly classified, and grades should be uniformly compiled and managed. Symbol meaning
Sequence number (00- 99)
Meaning of symbols
State or characteristics of materials
4.2 The classification and designation of materials shall be uniformly carried out by the national standard administration department (or its authorized unit) together with relevant units in accordance with the principles and methods specified in this standard.
4.3 For powder metallurgy materials that meet the requirements of this standard and need to be uniformly designated, the units and departments responsible for drafting the technical standards of a specific material shall propose suggestions for the designation, and the national standard administration department (or its authorized unit) shall be responsible for reviewing and verifying, and finally determining the uniform designation.
Additional notes:
This standard was proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard was drafted by the General Iron and Steel Research Institute of the Ministry of Metallurgy and the Beijing Powder Metallurgy Research Institute. The main drafters of this standard are Jiang Zhenchun and Wu Rongwei." indicates tungsten-based electrical contact material made by melt infiltration process. Example 2 "F63××" indicates sintered silver-based electrical contact material. Example 3 "F65××S" indicates sintered collector material, relative density>77.5~82.5% 3. 2. 8 Magnetic materials
General formula:
Meaning of symbols
F - Powder metallurgy materials
The meaning of the symbol
7 Magnetic materials
Meaning of symbols
Classification of magnetic materials
0-Soft magnetic ferrite
1-Hard magnetic ferrite
2-Special magnetic ferrite
3-(Vacancy)
4-Soft magnetic metals and alloys
5-Hard magnetic alloys
6-(Vacancy)|| tt||7-Special magnetic alloy
8-(Vacancy)
9-(Vacancy)
Example 1 "F70××" indicates sintered soft magnetic ferrite.
Meaning of symbols
Serial number (00-99)
Meaning of symbols
State or characteristics of materials
Meaning of symbols
State or characteristics of materials
GB 430984
Example 2 "F75××Z" indicates a hard magnetic alloy that has been sintered and treated. a.2.9 Other materials
General formula:
Symbol meaning
F-Powder metallurgy materials
Symbol meaning
8-Other materials
Symbol meaning
Classification of other materials
0-Plating, zirconium and other materials
1-(Vacancy)
2 (Vacancy)
3-(Vacancy)
4-(Vacancy)
5 Electrical and magnetic functional materials
6 -(Vacancy)
7-(Vacancy)
8-(Vacancy)
9 - (blank)
Example 1 "F80××X" indicates dense beryllium material made by hot forming process. 4 Classification of materials and compilation and management of grades 4.1 Powder metallurgy materials should be uniformly classified, and grades should be uniformly compiled and managed. Symbol meaning
Sequence number (00- 99)
Meaning of symbols
State or characteristics of materials
4.2 The classification and designation of materials shall be uniformly carried out by the national standard administration department (or its authorized unit) together with relevant units in accordance with the principles and methods specified in this standard.
4.3 For powder metallurgy materials that meet the requirements of this standard and need to be uniformly designated, the units and departments responsible for drafting the technical standards of a specific material shall propose suggestions for the designation, and the national standard administration department (or its authorized unit) shall be responsible for reviewing and verifying, and finally determining the uniform designation.
Additional notes:
This standard was proposed by the Ministry of Metallurgical Industry of the People's Republic of China. This standard was drafted by the General Iron and Steel Research Institute of the Ministry of Metallurgy and the Beijing Powder Metallurgy Research Institute. The main drafters of this standard are Jiang Zhenchun and Wu Rongwei.
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