Q-Taixin 038-2008: Technical requirements for 301 series stainless steel plates (coils) for elastic components
Technical conditions of 301 series stainless steel plate (coil) for elastic elements
Q/Taixin 038-2008
Replacement: Q/Taixin 039-2004
1. Range
This condition applies to 301 series (0Cr17Ni7(301M), SUS301T, 301S, 301B) stainless steel cold-rolled plates (coils) for elastic components.
This standard specifies the dimensions, technical requirements, test methods, inspection rules, packaging, markings, and quality certificates of 301 series stainless steel for elastic components.
2. Normative references
The clauses in the following documents constitute the clauses of this standard through the reference of this standard. For dated reference documents, all subsequent amendments (excluding errata content) or revisions do not apply to this standard. However, all parties that have reached an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version is applicable to this standard.
The allowable deviation of the chemical composition of the finished product of GB/T 222 steel.
GB/T 223 Chemical analysis methods for steel and alloy
GB/T 228 Metallic materials tensile test at room temperature
GB/T 230.1 Metal Rockwell Hardness Test Part 1: Test Method
GB/T 231.1 Metal Brinell Hardness Test Part 1: Test Method
GB/T 247 General provisions for acceptance, packaging, marking and quality certificates of steel plates and strips
GB/T 708 Size, shape, weight and allowable deviation of cold rolled steel plate and steel strip
GB/T 709 Hot-rolled steel plate and strip size, shape, weight and allowable deviation
GB/T 2975 Steel and steel product mechanical performance test sampling location and sample preparation
GB/T 3076 Tensile test method for sheet metal (belt)
GB/T 3280 Cold rolled stainless steel plate and strip
GB/T 4237 stainless steel hot-rolled steel plate and strip
GB/T 4340.1 Metal Vickers Hardness Test Part 1: Test Method
GB/T20066 Sampling and sample preparation method of steel and iron for chemical composition determination
3. Nominal size and allowable deviation
3.1 Nominal size:
Cold rolled sheet (coil): （0.6～3.0）×1000×L or coil mm
（0.6～3.0）×1219×L or roll mm
Hot rolled plate (coil): 3.0~6.0×1000×L or coil mm
3.0~6.0×1219×L or roll mm
3.2 The size deviation can be implemented according to the content negotiated between the user and TISCO. If there is no special requirement, it should meet the requirements of GB/708 or GB/T709.
3.3 The delivery of raw edges (indicated by EM) is allowed.
4. skills requirement
4.1 Grades:
SUS301T, 301S, 301B, 0Cr17Ni7 (301M).
4.2 The chemical composition should meet the requirements of Table 1
Table 1 Chemical composition Unit:%
| Grade | C | Si | Mn | P | S | Cr | Ni | Mo | Cu | N |
|---|---|---|---|---|---|---|---|---|---|---|
| 0Cr17Ni7 (301M) | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 16.20～18.00 | 6.20～8.00 | |||
| SUS301T | 0.10～0.14 | ≤1.00 | ≤1.20 | ≤0.035 | ≤0.030 | 16.00～17.00 | 6.20～7.00 | |||
| 301S | 0.11~0.14 | 0.3~0.6 | 1.6~1.9 | 0.045 | 0.030 | 16.3~16.9 | 6.1~6.4 | ≤0.40 | ≤0.50 | 0.04~0.07 |
| 301B | 0.10~0.13 | 0.6~0.90.65~0.90 | ≤0.045 | ≤0.030 | 16.25~16.65 | 6.60~6.9 | ≤0.40 | ≤0.50 | ≤0.03 |
4.3 Mechanical properties:
mechanical properties should meet the requirements of Table 2
Table 2 Product mechanical properties
| Grade | Rm（MPa） | A（%） | HB | HRB | HV |
|---|---|---|---|---|---|
| 0Cr17Ni7 (301M) | ≥520 | ≥40 | ≤187 | ≤90 | ≤200 |
| SUS301T | ≥520 | ≥40 | ≤187 | ≤95 | ≤220 |
Note: Hardness can be tested in one of the methods according to different sizes and conditions of steel plates and steel strips during production.
4.4 Surface quality:
Cold rolled sheet (coil): 2B surface. The surface should be free of obvious scratches, pitting, heavy leather inclusions and defects affecting the use.
Hot rolled plate (coil): No.1 surface. The surface has no serious roughness, scratches, perforations, pressure pits and defects that affect use.
4.5 Inclusion rating: oxide ≤2 grade, sulfide ≤2 grade. (Hot rolled plates (coils) are not inspected for inclusions)
4.6 Delivery status: solid solution, pickling.
5. Test methods, inspection rules, packaging, marks, and quality certificates
Test methods, inspection rules, packaging, markings, and quality certificates should all comply with GB/T3280 or GB/T4237 standards.