Some standard content:
National Standard of the People's Republic of China
Titanium and titanium alloy sheet and plate
Titanium and titanium alloy sheet and plate Subject content and scope of application
GB/T 3621—94
Replaces GR362183
This standard specifies the classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of titanium and titanium alloy sheets. This standard is applicable to titanium and titanium alloy sheets for various purposes. 2 Reference standards
Metal tensile test method
Metal bending test method
GB/T 3620
Titanium and titanium alloy grades, chemical composition and allowable deviation of composition GB4338 Metal high-temperature tensile test method
GB/T4698 Chemical analysis method for titanium and titanium alloys 5 Metal high-temperature tensile endurance test method
GB6395
GB 6397
Metal tensile test specimen
GB/T8180 Packaging, marking, transportation and storage of titanium and titanium alloy processed products 3 Product classification
Grade, state, specification
The brand, supply state and specification of the product shall comply with the provisions of Table 1. Table 1
TA0, TA1 TA2, TA3, TA5
TA6, TA7, TA9, TA10, TB2,
TC1, TC2, TC3, TC4
Manufacturing method
Supply state
Hot working state
Annealing state (M)
Cold working state
Annealing state (M)
Fire (C)
Fire (C)
Thickness × width × length
(4. 160. 0)X (400~-3 000)
X(1 000~*4 000)
(0. 3 -- 4. 0) X(100~~1 000)X(1 000 ~-3 000 )
(4. 1~10. 0) X (400--3 000 )X(1 000 -- 4 000)
(1. 0--4. 0)x (400-~1 000)
X(1 000~3 000)
Note: The minimum thickness of industrial pure titanium plate is 0.3mm. The minimum thickness of various grades of titanium alloy plates is shown in Table 5. Approved by the State Administration of Technical Supervision on February 20, 1994 3.18
Implementation on December 1, 1994
3.2 Marking Example
GB/T 3621-94
A plate made of TA2, in annealed state, with a thickness of 10.0 mm, a width of 1000 mm, and a length of 3000 mm is marked as: Plate TA2M10.0×1000×3000GB/T3621-944 Technical requirements
4.1 Chemical composition
4.1.1 The chemical composition of titanium and titanium alloy plates shall comply with the provisions of GB/T3620. When the purchaser retests, the allowable deviation of the chemical composition shall comply with the provisions of G/T3620.
4.1.2 TA7 plates with an oxygen content of less than 0.15% can be supplied, but this should be indicated in the contract. 4.2 Allowable deviation of size
4.2.1 The allowable deviation of plate thickness shall comply with the provisions of Table 2, and the allowable deviation of width and length shall comply with the provisions of Table 3. Table 2
Thickness allowable deviation
400~1000
0.3,0.4,0.5
0.6,0.7,0.8
0. 9,1.0,1.1
1. 2.1. 4. (1.5) | 0
22. 5.25. 0,28. 0,30. 0
32.0,35.0,38. 0,40.0
12. 0.45. 0.48. 0,50. 0
53. 0,56.0,60.0
≥1 000~～2 000
Note: Other specifications of non-series products can also be provided according to the requirements of the purchaser, and the thickness tolerance shall be implemented according to the adjacent larger specifications. mm
4. 0~20. 0
>20. 0~60. 0
GB/T362194
Allowable deviation
400～1000
400～3000
400～~3000
Note: Plates with a roughness greater than 15mm may be delivered without trimming if the purchaser agrees. 4.2.22
The unevenness of the plate shall comply with the provisions of Table 4. Table 4
Unevenness
Thickness, mm
Not more than
>4~10
>10~20
>20~35
>35~60
4.2.3 The edges of the sheared plates should be cut evenly, without cracks or curling, and slight burrs are allowed. Length
1000~3000
1 000~4 000
1000~4 000
4.2.4 The corners of the plates should be cut into right angles as much as possible, and the bevel should not exceed the allowable deviation of the length and width of the plates. 4.3 Mechanical properties
4.3.1 The transverse room temperature mechanical properties of the plates should comply with the requirements of Table 5. Table 5
0.3～2.0
5.1-10. 0
Tensile strength
280~420
370-~530
Room temperature mechanical properties, not less than
Specified residual elongation stress
Allowable deviation
Elongation rate
GB/T 3621—94
Continued Table 5
Tensile strength
0. 3 ~ 1. 0
1.1～2. 0
5. 1 ~10. 0
10.1～25.0
1.1～2.0
2. 1~~5.0
1.1~2.0
5.1~10.0
0. 8~1. 5
1. 6~~2. 0
5. 1~~10. 0
1. 6~2. 0www.bzxz.net
5.1～10.0
5.1～10.0
0. 5 ~~1. 0
0. 5-~1. 0
1.1～2.0
2. 1~~5. 0
440~620
540~720
735~930
370~530
590~735
Room temperature mechanical properties
No.
Specified residual elongation stress
Elongation
Note: “CS” means “fired and aged\state plate
GB/T 3621—94
Continued Table 5
Tensile strength
0. 8~2. 0
2. 1 ~5. 0
0. 8~2. 0
2.1～5.0
Room temperature mechanical properties shall not be less than
Specified residual elongation stress
Elongation
4.3.2When the purchaser requires and specifies in the contract, the longitudinal room temperature mechanical properties of the plate may be measured and shall comply with the provisions of Table 5. 4.3.3When the purchaser requires and specifies in the contract, the high temperature mechanical properties of the plate shall comply with the provisions of Table 6. The test temperature shall be specified in the contract.
4.3.4Table 5 For plates of other specifications not listed in the above, and plates delivered in RY state, when the purchaser requires and specifies in the contract, the room temperature and high temperature mechanical properties shall be reported as actual measured data. Table 6
TC3,TC4
4.4 Processing properties
The bending properties of the plates shall comply with the provisions of Table 7. 52
Tensile strength
b,N/mma
High temperature mechanical properties
Endurance strength
oi0oh,N/mm2
not less than
4.5 Surface quality
GB/T3621--94
Plate thickness
0. 3~5. 0
0. 3~2. 0
2. 1 ~5. 0
0. 3~~2. 0
2.1~~5.0
0.8~2.0
1. 1~2. 0
0. 5~~1. 0
0. 8~~2.0
4.5.1 The surface of the plate should be smooth and of metallic color. Plates are allowed to be supplied with sandblasted surfaces. The bending angle α, degrees
shall not be less than
4.5.2 Slight darkening and local water marks are allowed on the surface of the plate; local scratches, indentations, pits and other defects that do not exceed half of the thickness tolerance are allowed, but the minimum thickness should be guaranteed. 4.5.3 The plate surface is not allowed to have macroscopic defects such as cracks, peeling, oxide scale, folding, metal and non-metal inclusions, and traces of over-alkali washing. 4.5.4 Plates are allowed to remove local defects along the rolling direction, but the thickness of the plate after removal shall not be less than the minimum allowable thickness. 4.5.5 When there are special requirements for surface quality, the supply can be negotiated by the supply and demand parties. 4.6 Other requirements
Plates should not be delaminated.
5 Test methods
5.1 Chemical composition arbitration analysis method
GB/T 3621-94
The chemical composition arbitration analysis of the plate shall be carried out in accordance with GB/T4698. 5.2 Mechanical properties test method
5.2.1 The room temperature tensile test of the plate shall be carried out in accordance with GB228. For plates with a thickness not exceeding 6.0mm, the P1 and P2 specimens in GB6397 shall be selected; for plates with a thickness exceeding 6.0mm, the R7 specimen in GB6397 shall be selected. 5.2.2 The high temperature tensile test of the plate shall be carried out in accordance with GB4338. 5.2.3 The high temperature tensile endurance test of the plate shall be carried out in accordance with GB6395. 5.3T. Technological properties test method
The bending test of the plate shall be carried out in accordance with GB232. A 15mm wide specimen shall be used, and the bending core diameter shall be 3 times the plate thickness. 5.4 Dimension measurement method
The plate thickness shall be measured at a distance of not less than 100mm from the top corner and not less than 10mm from the edge. The thickness, length and unevenness of the plate shall be measured with measuring tools of corresponding accuracy.
6 Inspection rules
6.1 Inspection and acceptance
6.1.1 The plate 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. 6.1.2 The buyer shall inspect the received products according to the provisions of this standard. If the inspection results do not comply with the provisions of this standard, the buyer shall report to the supplier within 3 months from the date of receipt of the product, and the supplier and buyer shall negotiate to resolve the problem. 6.2 Batching
Plates shall be submitted for inspection in batches. Each batch shall consist of products with the same brand, melting furnace number, thickness specification, manufacturing method, state, and the same heat treatment furnace (batch).
6.3 Inspection Item H
Each batch of plates shall be inspected for chemical composition, dimensional deviation, mechanical properties, process properties and surface quality. 6.4 Sampling Location and Sampling Quantity
6.4.1 Take one sample from each batch of plates for hydrogen content analysis, and other components shall be reported as the analysis results of the casting chain. 6.4.2 Mechanical and process properties test, take two sheets from each batch of plates, and take one transverse sample from each sheet according to the test items. When the purchaser requires and specifies in the contract, take one longitudinal room temperature tensile sample from each sheet. 6.5 Repeated test
In the tests of chemical composition, mechanical properties and process properties, if one sample fails the test result, take double samples from the batch of plates (including the original tested plates) to re-test the unqualified item. If one sample still fails the re-test result, the whole batch of plates shall be scrapped, or the unqualified items shall be re-tested sheet by sheet, and the qualified ones shall be re-grouped for acceptance. 7 Marking, packaging, transportation and storage
7.1 Product marking
The following markings (or labels) should be placed on the inspected boards: a. Inspection stamp of the supplier's technical supervision department;
Noodles, brand name;
c. Supply status;
d. Batch number.
7.2 Packaging, packaging marking, transportation and storage The packaging, packaging marking, transportation and storage of products should comply with the provisions of GB8180. 354
Quality certificate
Each batch of plates shall be accompanied by a quality certificate, indicating: a.
Name of supplier;
Product name;
Product brand, specification and status;
Smelting furnace number, batch number, batch weight and number of pieces; various analysis and test results specified in GB/T 3621-94
and the stamp of the technical supervision department; This standard number:
Packing date.
Additional instructions:
This standard was proposed by China Nonferrous Metals Industry Corporation. This standard was drafted by Baoji Nonferrous Metals Processing Plant. The main drafters of this standard are Shi Zhengmin, Cao Qidong, Meng Qinglin and Yi Mengyang. 3355 Repeated test
In the tests of chemical composition, mechanical properties and process properties, if one sample fails the test result, double samples shall be taken from the batch of plates (including the original tested plates) to retest the unqualified items. If one sample still fails the retest result, the whole batch of plates shall be scrapped, or the unqualified items shall be retested one by one, and the qualified ones shall be re-grouped for acceptance. 7 Marking, packaging, transportation and storage
7.1 Product marking
The following marks (or labels) shall be placed on the inspected plates: a. Inspection stamp of the supplier's technical supervision department;
Noodles, brand;
c. Supply status;
d. Batch number.
7.2 Packaging, packaging marking, transportation and storage The packaging, packaging marking, transportation and storage of products shall comply with the provisions of GB8180. 354
Quality certificate
Each batch of plates shall be accompanied by a quality certificate, indicating: a.
Name of supplier;
Product name;
Product brand, specification and status;
Smelting furnace number, batch number, batch weight and number of pieces; various analysis and test results specified in GB/T 3621-94
and the stamp of the technical supervision department; This standard number:
Packing date.
Additional instructions:
This standard was proposed by China Nonferrous Metals Industry Corporation. This standard was drafted by Baoji Nonferrous Metals Processing Plant. The main drafters of this standard are Shi Zhengmin, Cao Qidong, Meng Qinglin and Yi Mengyang. 3355 Repeated test
In the tests of chemical composition, mechanical properties and process properties, if one sample fails the test result, double samples shall be taken from the batch of plates (including the original tested plates) to retest the unqualified items. If one sample still fails the retest result, the whole batch of plates shall be scrapped, or the unqualified items shall be retested one by one, and the qualified ones shall be re-grouped for acceptance. 7 Marking, packaging, transportation and storage
7.1 Product marking
The following marks (or labels) shall be placed on the inspected plates: a. Inspection stamp of the supplier's technical supervision department;
Noodles, brand;
c. Supply status;
d. Batch number.
7.2 Packaging, packaging marking, transportation and storage The packaging, packaging marking, transportation and storage of products shall comply with the provisions of GB8180. 354
Quality certificate
Each batch of plates shall be accompanied by a quality certificate, indicating: a.
Name of supplier;
Product name;
Product brand, specification and status;
Smelting furnace number, batch number, batch weight and number of pieces; various analysis and test results specified in GB/T 3621-94
and the stamp of the technical supervision department; This standard number:
Packing date.
Additional instructions:
This standard was proposed by China Nonferrous Metals Industry Corporation. This standard was drafted by Baoji Nonferrous Metals Processing Plant. The main drafters of this standard are Shi Zhengmin, Cao Qidong, Meng Qinglin and Yi Mengyang. 335
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.