ITEM | Standard Number | Descriptions |
1 | ISO/TR 4956 | Wrought steels for use at elevated temperatures in engines |
Elements | Min.(≥) | Max.(≤) |
C | 0.03 | 0.08 |
Si | 1.00 | |
Mn | 2.00 | |
P | 0.025 | |
S | 0.015 | |
Cr | 13.50 | 16.00 |
Mo | 1.00 | 1.50 |
Ni | 24.00 | 27.00 |
V | 0.10 | 0.50 |
Ti | 1.90 | 2.30 |
B | 0.003 | 0.010 |