1. Standard
National Standard：GB/T14976-20122. Chemical Composition
| C | Mn | P | S | Si | Cr | Mo | Ni | |
| Min | 16.0 | 2.0 | 10.0 | |||||
| Max | 0.03 | 2.0 | 0.035 | 0.030 | 1.0 | 18.0 | 3.0 | 14.0 |
| Actual value | 0.015 | 0.91 | 0.030 | 0.002 | 0.35 | 16.33 | 2.3 | 10.5 |
3. Mechanical Properties
| Mechanical Properties |
Tensile Strength MPa |
Yield Strength MPa |
Elongation % |
| Min | 480 | 175 | 35 |
| Max | |||
| Actual value | 635 | 234 | 48 |
4. Typical Size
| Size |
Outside Diameter mm |
Permissible Variations in Outside Diameter mm |
Wall Thickness mm |
Average Wall Permissible Variations in Wall Thickness |
| 89×4 | 89 | ±0.85%D | 4 | ±10%S |
5. Typical Application Environment
1）Chemical Equipment
2）The equipment pipes of petrochemical and petroleum
3）Waste water treatment
4）Heat Exchanger
5）Fluid Service
6) Power station
7) New energy and environmental protection
8) Aerospace
9) Ships
10) Medical Equipment