Some standard content:
GB/T 5156—2003
This standard is a revision of GB/T5156-1985 "Hot Extruded Magnesium Alloy Profiles". This standard is prepared with reference to the American ASTMB107-2002 standard.
Compared with GB/T 5156-
—1985, this standard has the following changes: - New alloy grades and state codes are adopted. - Mechanical properties adopt the International System of Units and the Brinell hardness index is added. The requirements for macrostructure are added.
This standard replaces GB/T5156—1985 from the date of implementation. Appendix A of this standard is an informative appendix.
This standard is proposed by the China Nonferrous Metals Industry Association. This standard is under the jurisdiction of the National Technical Committee for Standardization of Nonferrous Metals. The drafting unit of this standard: Northeast Light Alloy Co., Ltd. The main drafters of this standard: Wang Guojun, Wen Lihua, Pan Zhe, Wang Tao, Tang Mingjun, He Zhenbo. This standard shall be interpreted by the National Technical Committee for Standardization of Nonferrous Metals. The previous versions of the standards replaced by this standard are: -GB/T 5156--1985.
1 Scope
Magnesium alloy hot extrusion profiles
GB/T 5156--2003
This standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation, storage and contract content of magnesium alloy hot extrusion profiles.
This standard applies to magnesium alloy hot extrusion profiles. 2 Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties to the agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version shall apply to this standard. GB/T228 Room temperature tensile test method for metallic materials GB/T231
GB/T 3199
GB/T 4297
Metal Brinell hardness test method
Packaging, marking, transportation and storage of aluminium and aluminium alloy processed products Macrostructure inspection method for magnesium alloy processed products GB/T 5153
Grades and chemical composition of wrought magnesium and magnesium alloysSH0039Industrial vaseline
GB/T13748 (all parts)
Chemical analysis methods for magnesium and magnesium alloys
GB/T16865Test specimens for tensile test of wrought aluminum, magnesium and their alloy productsGJB/Z125Section manual of military aluminum alloy and magnesium alloy extruded profilesSY1502Grease for guns
3 Requirements
3.1 Product classification
3.1.1Grade and state
The grade and state of magnesium alloy extruded profiles shall comply with the provisions of Table 1. Table 1
Alloy grade
AZ40M,ME20M
Note: See Appendix A for the comparison table of new and old grades and new and old states. 3.1.2 Marking examples
Example 1:
The profile of indefinite length made of ME20M, in hot extrusion state, model XC141-7, is marked as: Magnesium type ME20M-H112XC141-7GB/T5156—2003Example 2:
H1I2, F
The profile made of ZK61M, in hot extrusion and artificial aging state, with a fixed length of 3500mm and model XC6283, is marked as: Magnesium type ZK61M-T5 XC6283X3500 GB/T 5156—20031
GB/T5156—2003
3.2 Chemical composition
The chemical composition of the profile shall comply with the provisions of GB/T5153. 3.3 Dimensions and allowable deviations
3.3.1 The allowable deviations of the cross-sectional dimensions such as thickness and width of the profile shall comply with the provisions of GJB/Z125 or the technical drawings signed by the supplier and the buyer. 3.3.2 Dimensions and allowable deviations
The allowable deviations of the profile dimensions specified in Table 2 are for reference when the supplier and the buyer negotiate the drawings. Table 2
Nominal dimensions of profiles
>1. 50~2.50
>2. 50 ~3.50
>3.50~~6.00
>6. 00~12. 00
>12. 00~25. 00
>25. 00 ~50, 00
>50. 00~75. 00
>75.00~~100.00
>100. 00~~125.00
>125. 00~150. 00
>150. 00 ~ 175. 00
>175. 00 ~200. 00
>200. 00~~225. 00
>225. 00 ~250. 00
>250. 00~275. 00
>275. 00~300. 00
3.3.3 Angular deviation of profile
The angular deviation of profile shall not exceed ±2°3.3.4 Gap of profile
3.3.4.1 Plane gap of profile
Allowable deviation
Unit is mm
When placing a ruler horizontally on any plane of the profile, the gap between the profile plane and the ruler shall not be greater than 2% of the width of the plane of the profile being tested, but the maximum gap value shall not exceed 1mm. The measurement method is shown in Figure 1. Width
3.3.4.2 Surface clearance of profiles
7777N7777777
Plane clearance
Profiles that require surface clearance inspection must be indicated on the drawing. Surface clearance is inspected with a sample provided by the purchaser, and its clearance is not greater than 1% of the arc length. The measurement method is shown in Figure 2. 2
3.3.5 Curvature of profiles
GB/T5156—2003
Profiles with a wall thickness of less than or equal to 4mm are allowed to have a uniform hook bend that can be eliminated by light pressure by hand (less than 196N). Profiles with a wall thickness greater than 4mm to 10mm are allowed to have a uniform bend of no more than 4mm per meter; profiles with a wall thickness greater than 10mm are allowed to have a uniform bend of no more than 2mm per meter. Profiles with rounded heads and wedges are allowed to have a sickle-shaped bend of no more than 4mm per meter. 3.3.6 Twist degree
The twist degree (α1) around the longitudinal axis of the profile at any length of 1 m shall not exceed 3°, and the maximum twist degree (α2) on the entire profile shall not exceed 7°. When measuring, place the profile on the platform and measure the twist height (ui) at any length of 1 m and the maximum twist height (vz) on the entire profile, as shown in Figure 3. The twist degree meets the requirements only when i < profile width × sinαl and z < profile width × sinαz. Figure 3
3.3.7 Profile fillet radius
The profile fillet radius detection method is shown in Figure 4, and its allowable deviation shall comply with the drawing requirements agreed upon by the supply and demand parties. When not specified on the drawing, the allowable deviation of the fillet radius shall comply with the provisions of Table 3. Figure 4
Rounded corner radius
>1. 00~3. 00
>3. 00 ~~10. 00
>10.00~25.00
Allowable deviation (±)
Unit: mm
GB/T 5156--2003
3.3.8 Length allowable deviation
When the profile length is fixed, the allowable deviation is +20mm. For profiles delivered in multiple lengths, the length deviation is +20mm and the sawing is 5mm. For profiles that are not required to be delivered in fixed length, the delivery length is 1000 mm~6000mm. If there are special requirements for the above dimensional deviations, they must be indicated in the contract.
3.3.9 Cutting bevel
The ends of the profiles should be cut flush, and the cutting bevel should not exceed 3°. The periphery of the profile end should be clean and free of burrs. 3.3.10 Waviness
The profile wave height is not allowed to exceed 1mm, and there should be no more than 1 wave per meter, but waves with a height of less than 0.2mm are not counted.
3.4 Mechanical properties
The room temperature longitudinal mechanical properties of the profile should comply with the provisions of Table 4. In general, only mechanical properties are measured. When it is impossible to take mechanical property samples, Brinell hardness can be measured.
Tensile strength
Alloy grade
3.5 Surface quality
Delivery status
Rr/(N/mm2)
Specified non-proportional elongation strength
Rpo.2/(N/mm2)
Not less than
3.5.1 The profile surface should be clean, and cracks, corrosion spots and various indentations are not allowed. Elongation after fracture
Brinell hardness
3.5.2 The profile surface is allowed to have peeling, bumps and depressions that do not exceed the negative deviation, as well as point roughness, scratches and individual abrasions that do not exceed half of the negative deviation. The total area of all allowed defects shall not exceed 4% of the surface on which they are located over a length of 1m. 3.5.3 Slight extrusion marks are allowed on the profile surface, and their depth shall not exceed 0.1mm. 3.5.4 The profile surface should be oxidized and the oxide layer should be intact, without exposing the base metal or falling off. 3.6 Macrostructure
3.6.1 The macrostructure of the profile is not allowed to have cracks, fissures, pores and shrinkage tails that destroy the continuity of the metal. 3.6.2 The macrostructure of the profile product is allowed to have a layered structure with a depth not exceeding half of the deviation margin (the difference between the measured thickness at this point and the minimum thickness allowed).
3.6.3 For ZK61M alloy profiles (wall thickness greater than 10.00mm), the coarse grain ring should be checked and its depth should not exceed 5mm. 4 Test method
Chemical composition arbitration method
The chemical composition arbitration analysis of the profile shall be carried out in accordance with GB/T13748, and the sampling shall be carried out in accordance with GB/T17432. 4.2 Room temperature mechanical property test method
The room temperature mechanical property test of the profile shall be carried out in accordance with GB/T228, and the sampling shall be carried out in accordance with GB/T16865. The hardness test shall be carried out in accordance with GB/T231.
4.3 Macrostructure inspection method
The macrostructure inspection of profiles shall be carried out in accordance with GB/T4297. 4.4 Surface inspection method
The surface quality of profiles shall be inspected with the naked eye. Defects whose depth cannot be determined may be ground. It must be ensured that the size of the profile after grinding does not exceed the allowable deviation.
4.5 Dimension measurement method
The size inspection of profiles shall be measured with a measuring tool with an accuracy of not less than 0.02mm. 5 Inspection rules
5.1 Inspection and acceptance
GB/T 5156—2003
5.1.1 Profiles shall be inspected by the supplier's technical supervision department to ensure that the product quality complies with the provisions of this standard and fill in the quality certificate. 5.1.2 After receiving the product, the purchaser shall unpack and re-inspect it within 5 days in accordance with the provisions of this standard. When the re-test results are inconsistent with the provisions of this standard and the order contract, they shall be submitted to the supplier in written form and resolved by negotiation between the supplier and the buyer. Objections to surface quality and dimensional deviation shall be raised within 1 month from the date of receipt of the product, and objections to other properties shall be provided within 3 months from the date of receipt of the product. If arbitration is required, arbitration sampling shall be carried out jointly by the supplier and the buyer.
5.2 Batch
Profiles shall be submitted for acceptance in batches, and each batch shall consist of the same melting times, the same state and the same specifications. 5.3 Inspection items
Each batch of products shall be inspected for chemical composition, mechanical properties, dimensional deviation, surface quality and macrostructure before leaving the factory. 5.4 Sampling
Inspection items, sampling locations and sampling quantities shall comply with the provisions of Table 5. Table 5
Inspection items
Chemical composition
Mechanical properties at room temperature
Dimensional deviation
Macrostructure
Appearance quality
Sampling position
Take one piece at random from the batch
Extrusion front end
Any part
Extrusion tail end
Any part
5.5 Determination of inspection results
Sampling quantity
According to GB/T17432
Take 10% of the number of roots, not less than 2 roots, and take 1 sample for each root. 50% of the samples (not less than 2) are measured for Rpo.2. Root-by-root inspection
Take 10% of the number of roots, but not less than 2 roots. Take one sample from each piece
Test each piece
5.5.1 If the chemical composition is unqualified, the melting (or batch) is judged to be unqualified. 5.5.2 If the size and appearance quality are unqualified, it is considered a single piece unqualified. Required article number
Inspection article number
5.5.3 If the mechanical properties are unqualified, double the number of samples (including the original unqualified profiles) should be taken from the batch (furnace) for re-inspection. If the re-inspection results are unqualified, the whole batch is judged to be unqualified. However, the batch of materials can be inspected by the supplier piece by piece, and the qualified ones will be delivered. Or repeat heat treatment and re-sample.
5.5.4 Even if there is one unqualified sample in the macrostructure, double the number of samples should be taken from the batch of profiles for repeated inspection. If there are still unqualified ones in the repeated test results, the batch will be scrapped, but the supplier is allowed to inspect each piece and deliver the qualified ones. If the product fails to meet the standard due to lamination or tail shrinkage, it shall be cut until the low-magnification structure meets the standard.
6 Marking, packaging, transportation and storage
6.1 Marking
The marking of the packaging box of the profile shall refer to the provisions of GB/T3199. The following marks shall be stamped on the front of the qualified products: the stamp of the supplier's technical supervision department;
b) batch number;
c) qualified brand;
GB/T 5156—2003
d) supply status.
Note: For profiles with a flat part width of less than 20mm or profiles with shapes that are inconvenient to print, a label shall be tied to the front of each box of products. The label shall be stamped with the alloy brand, status, batch number and inspection stamp.
2 Packaging, transportation and storage
After the profiles are oxidized, they are coated with dehydrated (foam removed) gun oil that has been preheated to above 100°C. The gun oil should comply with the provisions of SY1502 (neutral or weakly alkaline vaseline containing 6% refined wax is allowed to replace the gun oil, and its composition complies with the provisions of SH0039). 6.2.2 Other requirements for packaging, transportation and storage shall refer to the provisions of GB/T3199. 6.3 Quality Certificate
Each batch of profiles shall be accompanied by a quality certificate that complies with the requirements of this standard, indicating: supplier’s name, address, telephone number and fax number; a)
b) product name;
alloy grade;
specification;
supply status,
batch number;
net weight or number of pieces;
various analysis and test results and stamp of the technical supervision department; i) number of this standard;
j) date of manufacture (or packaging date).
Contract Content
The contract for ordering materials covered by this standard shall include the following contents: a) Product name;
b) Brand,
State;
d) Dimensions and specifications;
Weight,
Matters required by this standard shall be noted in the contract; f)
Number of this standard:
Consultation results when adding contents other than those in this standard. Appendix A
(Informative Appendix)
Comparison table of new and old brands and new and old states of magnesium alloys Comparison table of new and old brands (see Table A.1)
New brand
Comparison of new and old states (see Table A.2)
New state
Old brand
Old state
GB/T5156-20033 Macrostructure inspection method
The macrostructure inspection of profiles shall be carried out in accordance with GB/T4297. 4.4 Surface inspection method
The surface quality of profiles shall be inspected with the naked eye. Defects whose depth cannot be determined may be ground. It must be ensured that the size of the profile after grinding does not exceed the allowable deviation.
4.5 Dimension measurement method
The size inspection of profiles shall be measured with a measuring tool with an accuracy of not less than 0.02mm. 5 Inspection rules
5.1 Inspection and acceptance
GB/T 5156—2003
5.1.1 Profiles shall be inspected by the supplier's technical supervision department to ensure that the product quality meets the requirements of this standard and fill in the quality certificate. 5.1.2 After receiving the product, the purchaser shall unpack and re-inspect it within 5 days in accordance with the provisions of this standard. If the re-inspection result is inconsistent with the provisions of this standard and the order contract, it shall be submitted to the supplier in writing and resolved by negotiation between the supply and demand parties. Objections to surface quality and dimensional deviation should be raised within 1 month from the date of receipt of the product, and objections to other properties should be raised within 3 months from the date of receipt of the product. If arbitration is required, arbitration sampling should be conducted jointly by the supply and demand parties.
5.2 Batch
Profiles should be submitted for acceptance in batches, and each batch should consist of the same melting, same state, and same specifications. 5.3 Inspection items
Each batch of products should be inspected for chemical composition, mechanical properties, dimensional deviation, surface quality and macrostructure before leaving the factory. 5.4 Sampling
Inspection items, sampling locations and sampling quantities should comply with the provisions of Table 5. Table 5
Inspection items
Chemical composition
Mechanical properties at room temperature
Dimensional deviation
Macrostructure
Appearance quality
Sampling position
Take one piece at random from the batch
Extrusion front end
Any part
Extrusion tail end
Any part
5.5 Determination of inspection results
Sampling quantity
According to GB/T17432
Take 10% of the number of roots, not less than 2 roots, and take 1 sample for each root. 50% of the samples (not less than 2) are measured for Rpo.2. Root-by-root inspection
Take 10% of the number of roots, but not less than 2 roots. Take one sample from each piece
Test each piece
5.5.1 If the chemical composition is unqualified, the melting (or batch) is judged to be unqualified. 5.5.2 If the size and appearance quality are unqualified, it is considered a single piece unqualified. Required article number
Inspection article number
5.5.3 If the mechanical properties are unqualified, double the number of samples (including the original unqualified profiles) should be taken from the batch (furnace) for re-inspection. If the re-inspection results are unqualified, the whole batch is judged to be unqualified. However, the batch of materials can be inspected by the supplier piece by piece, and the qualified ones will be delivered. Or repeat heat treatment and re-sample.
5.5.4 Even if there is one unqualified sample in the macrostructure, double the number of samples should be taken from the batch of profiles for repeated inspection. If there are still unqualified ones in the repeated test results, the batch will be scrapped, but the supplier is allowed to inspect each piece and deliver the qualified ones. If the product fails to meet the standard due to lamination or tail shrinkage, it shall be cut until the low-magnification structure meets the standard.
6 Marking, packaging, transportation and storage
6.1 Marking
The marking of the packaging box of the profile shall refer to the provisions of GB/T3199. The following marks shall be stamped on the front of the qualified products: the stamp of the supplier's technical supervision department;
b) batch number;
c) qualified brand;
GB/T 5156—2003
d) supply status.
Note: For profiles with a flat part width of less than 20mm or profiles with shapes that are inconvenient to print, a label shall be tied to the front of each box of products. The label shall be stamped with the alloy brand, status, batch number and inspection stamp.
2 Packaging, transportation and storage
After the profiles are oxidized, they are coated with dehydrated (foam removed) gun oil that has been preheated to above 100°C. The gun oil should comply with the provisions of SY1502 (neutral or weakly alkaline vaseline containing 6% refined wax is allowed to replace the gun oil, and its composition complies with the provisions of SH0039). 6.2.2 Other requirements for packaging, transportation and storage shall refer to the provisions of GB/T3199. 6.3 Quality Certificate
Each batch of profiles shall be accompanied by a quality certificate that complies with the requirements of this standard, indicating: supplier’s name, address, telephone number and fax number; a)
b) product name;
alloy grade;
specification;
supply status,
batch number;
net weight or number of pieces;
various analysis and test results and stamp of the technical supervision department; i) number of this standard;
j) date of manufacture (or packaging date).
Contract Content
The contract for ordering materials covered by this standard shall include the following contents: a) Product name;
b) Brand,
State;
d) Dimensions and specifications;
Weight,
Matters required by this standard shall be noted in the contract; f)
Number of this standard:
Consultation results when adding contents other than those in this standard. Appendix A
(Informative Appendix)
Comparison table of new and old brands and new and old states of magnesium alloys Comparison table of new and old brands (see Table A.1)
New brand
Comparison of new and old states (see Table A.2)
New state
Old brand
Old state
GB/T5156-20033 Macrostructure inspection method
The macrostructure inspection of profiles shall be carried out in accordance with GB/T4297. 4.4 Surface inspection method
The surface quality of profiles shall be inspected with the naked eye. Defects whose depth cannot be determined may be ground. It must be ensured that the size of the profile after grinding does not exceed the allowable deviation.
4.5 Dimension measurement method
The size inspection of profiles shall be measured with a measuring tool with an accuracy of not less than 0.02mm. 5 Inspection rules
5.1 Inspection and acceptance
GB/T 5156—2003
5.1.1 Profiles shall be inspected by the supplier's technical supervision department to ensure that the product quality meets the requirements of this standard and fill in the quality certificate. 5.1.2 After receiving the product, the purchaser shall unpack and re-inspect it within 5 days in accordance with the provisions of this standard. If the re-inspection result is inconsistent with the provisions of this standard and the order contract, it shall be submitted to the supplier in writing and resolved by negotiation between the supply and demand parties. Objections to surface quality and dimensional deviation should be raised within 1 month from the date of receipt of the product, and objections to other properties should be raised within 3 months from the date of receipt of the product. If arbitration is required, arbitration sampling should be conducted jointly by the supply and demand parties.
5.2 Batch
Profiles should be submitted for acceptance in batches, and each batch should consist of the same melting, same state, and same specifications. 5.3 Inspection items
Each batch of products should be inspected for chemical composition, mechanical properties, dimensional deviation, surface quality and macrostructure before leaving the factory. 5.4 Sampling
Inspection items, sampling locations and sampling quantities should comply with the provisions of Table 5. Table 5
Inspection items
Chemical composition
Mechanical properties at room temperature
Dimensional deviation
Macrostructure
Appearance quality
Sampling position
Take one piece at random from the batch
Extrusion front end
Any part
Extrusion tail end
Any part
5.5 Determination of inspection results
Sampling quantity
According to GB/T17432
Take 10% of the number of roots, not less than 2 roots, and take 1 sample for each root. 50% of the samples (not less than 2) are measured for Rpo.2. Root-by-root inspection
Take 10% of the number of roots, but not less than 2 roots. Take one sample from each piece
Test each piece
5.5.1 If the chemical composition is unqualified, the melting (or batch) is judged to be unqualified. 5.5.2 If the size and appearance quality are unqualified, it is considered a single piece unqualified. Required article number
Inspection article number
5.5.3 If the mechanical properties are unqualified, double the number of samples (including the original unqualified profiles) should be taken from the batch (furnace) for re-inspection. If the re-inspection results are unqualified, the whole batch is judged to be unqualified. However, the batch of materials can be inspected by the supplier piece by piece, and the qualified ones will be delivered. Or repeat heat treatment and re-sample.
5.5.4 Even if there is one unqualified sample in the macrostructure, double the number of samples should be taken from the batch of profiles for repeated inspection. If there are still unqualified ones in the repeated test results, the batch will be scrapped, but the supplier is allowed to inspect each piece and deliver the qualified ones. If the product fails to meet the standard due to lamination or tail shrinkage, it shall be cut until the low-magnification structure meets the standard.
6 Marking, packaging, transportation and storage
6.1 Marking
The marking of the packaging box of the profile shall refer to the provisions of GB/T3199. The following marks shall be stamped on the front of the qualified products: the stamp of the supplier's technical supervision department;
b) batch number;
c) qualified brand;
GB/T 5156—2003
d) supply status.
Note: For profiles with a flat part width of less than 20mm or profiles with shapes that are inconvenient to print, a label shall be tied to the front of each box of products. The label shall be stamped with the alloy brand, status, batch number and inspection stamp.
2 Packaging, transportation and storage
After the profiles are oxidized, they are coated with dehydrated (foam removed) gun oil that has been preheated to above 100°C. The gun oil should comply with the provisions of SY1502 (neutral or weakly alkaline vaseline containing 6% refined wax is allowed to replace the gun oil, and its composition complies with the provisions of SH0039). 6.2.2 Other requirements for packaging, transportation and storage shall refer to the provisions of GB/T3199. 6.3 Quality Certificate
Each batch of profiles shall be accompanied by a quality certificate that complies with the requirements of this standard, indicating: supplier’s name, address, telephone number and fax number; a)
b) product name;
alloy grade;
specification;
supply status,
batch number;
net weight or number of pieces;
various analysis and test results and stamp of the technical supervision department; i) number of this standard;
j) date of manufacture (or packaging date).
Contract Content
The contract for ordering materials covered by this standard shall include the following contents: a) Product name;
b) Brand,
State;
d) Dimensions and specifications;
Weight,
Matters required by this standard shall be noted in the contract; f)
Number of this standard:
Consultation results when adding contents other than those in this standard. Appendix A
(Informative Appendix)
Comparison table of new and old brands and new and old states of magnesium alloys Comparison table of new and old brands (see Table A.1)
New brand
Comparison of new and old states (see Table A.2)
New state
Old brand
Old state
GB/T5156-20031 Marking
The packaging box marking of profiles shall refer to the provisions of GB/T3199. The following marks shall be stamped on the front of the qualified products: the stamp of the supplier's technical supervision department;
b) batch number;
c) qualified brand;
GB/T 5156—2003
d) supply status.
Note: for profiles with a flat part width of less than 20mm or profiles with shapes that are difficult to print, a label shall be tied to the front of each box of products. The label shall be stamped with the alloy brand, status, batch number and inspection seal.
2 Packaging, transportation and storage
After the profiles are oxidized, they are coated with dehydrated (foam removed) gun oil that has been preheated to above 100°C. The gun oil should comply with the provisions of SY1502 (neutral or weakly alkaline vaseline containing 6% refined wax is allowed to replace the gun oil, and its composition complies with the provisions of SH0039). 6.2.2 Other requirements for packaging, transportation and storage shall refer to the provisions of GB/T3199. 6.3 Quality Certificate
Each batch of profiles shall be accompanied by a quality certificate that complies with the requirements of this standard, indicating: supplier’s name, address, telephone number and fax number; a)
b) product name;
alloy grade;
specification;
supply status,
batch number;
net weight or number of pieces;wwW.bzxz.Net
various analysis and test results and stamp of the technical supervision department; i) number of this standard;
j) date of manufacture (or packaging date).
Contract Content
The contract for ordering materials covered by this standard shall include the following contents: a) Product name;
b) Brand,
State;
d) Dimensions and specifications;
Weight,
Matters required by this standard shall be noted in the contract; f)
Number of this standard:
Consultation results when adding contents other than those in this standard. Appendix A
(Informative Appendix)
Comparison table of new and old brands and new and old states of magnesium alloys Comparison table of new and old brands (see Table A.1)
New brand
Comparison of new and old states (see Table A.2)
New state
Old brand
Old state
GB/T5156-20031 Marking
The packaging box marking of profiles shall refer to the provisions of GB/T3199. The following marks shall be stamped on the front of the qualified products: the stamp of the supplier's technical supervision department;
b) batch number;
c) qualified brand;
GB/T 5156—2003
d) supply status.
Note: for profiles with a flat part width of less than 20mm or profiles with shapes that are difficult to print, a label shall be tied to the front of each box of products. The label shall be stamped with the alloy brand, status, batch number and inspection seal.
2 Packaging, transportation and storage
After the profiles are oxidized, they are coated with dehydrated (foam removed) gun oil that has been preheated to above 100°C. The gun oil should comply with the provisions of SY1502 (neutral or weakly alkaline vaseline containing 6% refined wax is allowed to replace the gun oil, and its composition complies with the provisions of SH0039). 6.2.2 Other requirements for packaging, transportation and storage shall refer to the provisions of GB/T3199. 6.3 Quality Certificate
Each batch of profiles shall be accompanied by a quality certificate that complies with the requirements of this standard, indicating: supplier’s name, address, telephone number and fax number; a)
b) product name;
alloy grade;
specification;
supply status,
batch number;
net weight or number of pieces;
various analysis and test results and stamp of the technical supervision department; i) number of this standard;
j) date of manufacture (or packaging date).
Contract Content
The contract for ordering materials covered by this standard shall include the following contents: a) Product name;
b) Brand,
State;
d) Dimensions and specifications;
Weight,
Matters required by this standard shall be noted in the contract; f)
Number of this standard:
Consultation results when adding contents other than those in this standard. Appendix A
(Informative Appendix)
Comparison table of new and old brands and new and old states of magnesium alloys Comparison table of new and old brands (see Table A.1)
New brand
Comparison of new and old states (see Table A.2)
New state
Old brand
Old state
GB/T5156-2003
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