1. Standard
American Standard：ASME SB4072. Chemical Composition
| Elements | C | Mn | P | S | Si | Cr | Mo | Ni | Ti | Nb | Cu | Fe | Al |
| Min | 0.05 | 19.00 | 30.0 | 0.15 | 39.5 | 0.15 | |||||||
| Max | 0.10 | 1.5 | 0.015 | 1.0 | 23.0 | 35.0 | 0.60 | 0.75 | 0.60 | ||||
| Actual value | 0.072 | 0.80 | 0.001 | 0.23 | 20.1 | 31.03 | 0.51 | 0.01 | 46.57 | 0.54 |
3. Mechanical Properties
| Mechanical Properties |
Tensile Strength MPa |
Yield Strength MPa |
Elongation % |
Grain Size |
| Min | 450 | 170 | 30 | |
| Max | 5.0 | |||
| Actual value | 618 | 236 | 47.5 | 5.0 |
4. Typical Size
| Size |
Outside Diameter mm |
Tolerance of Outside Diameter mm |
Wall Thickness mm |
Tolerance of Wall Thickness |
| 133*6 | 133 | ±0.51 | 6 | ±12.5%S |
5. Typical Application Environment
1) Nitric acid condenser
3) Heating Elements tube