| 钢材:d ≤ 16mm;t ≤ 8mm |
淬火+回火(+QT) |
1100~1300 |
≥900 |
≥10 |
≥40 |
HRC ① ≥53 |
|
| 钢材:16mm ≤ d ≤ 40mm;8mm ≤ t ≤ 20mm |
淬火+回火(+QT) |
1000~1200 |
≥750 |
≥11 |
≥45 |
HRC ① ≥53 |
≥35 |
| 钢材:40mm ≤ d ≤ 100mm;20mm ≤ t ≤ 60mm |
淬火+回火(+QT) |
900~1100 |
≥650 |
≥12 |
≥50 |
HRC ① ≥53 |
≥35 |
| 钢材:100mm ≤ d ≤ 160mm;60mm ≤ t ≤ 100mm |
淬火+回火(+QT) |
800~950 |
≥550 |
≥13 |
≥50 |
HRC ① ≥53 |
≥35 |
| 钢材:160mm ≤ d ≤ 250mm;100mm ≤ t ≤ 160mm |
淬火+回火(+QT) |
750~900 |
≥500 |
≥14 |
≥55 |
HRC ① ≥53 |
≥35 |
| 钢材: |
处理到具有一定剪切性(+S) |
|
|
|
|
② ≤255 |
|
| 钢材: |
软化退火(+A) |
|
|
|
|
≤241 |
|