1. Standard
American Standard：ASTM A2132. Chemical Composition
| Elements | C | Mn | P | S | Si | Cr | Mo | Ni | N |
| Min | 24.00 | 2.0 | 21.0 | 0.10 | |||||
| Max | 0.025 | 2.0 | 0.02 | 0.03 | 0.4 | 26..0 | 3.0 | 23.0 | 0.16 |
| Actual value | 0.012 | 1.76 | 0.017 | 0.01 | 0.20 | 24.9 | 2.2 | 21.1 | 0.12 |
3. Mechanical Properties
| Wall Thickness | Mechanical Properties | Tensile Strength | Yield Strength | Hardness |
Elongation % |
| T≤6mm | Min | 580 | 270 | 25 | |
| Max | 217HBW/95HRB | ||||
| T>6mm | Min | 540 | 255 | 25 | |
| Max | 217HBW/95HRB | ||||
| T=4 | Actual value | 727 | 451 | 81.2HRB | 46 |
4. Typical Size
| Size |
Outside Diameter mm |
Tolerance of Outside Diameter mm |
Wall thickness mm |
Tolerance of Wall Thickness |
| 32*4 | 32 | ±0.19 | 4 | ±10%S |
5. Typical Application Environment
1) Petrochemical Industry2) Shipping
3) Environmental Protection