大同牌號(hào) |
JIS牌號(hào) |
碳C |
硅Si |
錳Mn |
磷P |
硫S |
鉻Cr |
鉬Mo |
440C-ESR |
SUS440C |
0.95~1.20 |
≤1.00 |
≤1.00 |
≤0.040 |
≤0.030 |
16.00~18.00 |
≤0.75 |
鍛造溫度℃ |
熱處理?xiàng)l件℃ |
硬度 |
相變點(diǎn) | ||||||
退火 |
淬火 |
回火 |
退火 HB |
淬火 HRC |
淬火回火 HRC |
Ac |
Ar |
Ms | |
1040~1075 |
800~920 緩冷 |
1000~1070 空冷 |
150~520 空冷 |
≤269 |
- |
54~58 |
804 |
- |
171 |