| 钢材:d ≤ 16mm;t ≤ 8mm |
淬火+回火(+QT) |
630~780 |
≥430 |
≥17 |
≥40 |
HRC ① ≥48 |
|
| 钢材:16mm ≤ d ≤ 40mm;8mm ≤ t ≤ 20mm |
淬火+回火(+QT) |
600~750 |
≥380 |
≥19 |
≥45 |
HRC ① ≥48 |
≥35 |
| 钢材:40mm ≤ d ≤ 100mm;20mm ≤ t ≤ 60mm |
淬火+回火(+QT) |
550~700 |
≥320 |
≥20 |
≥50 |
HRC ① ≥48 |
≥35 |
| 钢材:d ≤ 16mm;t ≤ 16mm |
正火(+N) |
≥550 |
≥300 |
≥18 |
|
|
|
| 钢材:16mm ≤ d ≤ 100mm;16mm ≤ t ≤ 100mm |
正火(+N) |
≥520 |
≥270 |
≥19 |
|
|
|
| 钢材:100mm ≤ d ≤ 250mm;100mm ≤ t ≤ 250mm |
正火(+N) |
≥500 |
≥245 |
≥19 |
|
|
|