德国 · DIN
1.8912
DIN 17178:1986 — Welded circular tuber of fine grain steels for special requirements; technical delivery conditions
化学成分
| 元素 | min | max | 相似 | 备注 |
|---|---|---|---|---|
| Al | 0.02 | If nitrogen is additionally fixed by niobium | If nitrogen is additionally fixed by niobium | |
| C | 0.2 | |||
| Cr | 0.3 | |||
| Cu | 0.2 | The value for Copper may be at max0 | The value for Copper may be at max0 | |
| Mn | 1 | 1.7 | ||
| Mo | 0.1 | |||
| N | 0.02 | |||
| Nb | 0.05 | |||
| Nb+Ti+V | 0.22 | |||
| Ni | 1 | |||
| P | 0.03 | |||
| S | 0.025 | |||
| Si | 0.1 | 0.6 | ||
| Ti | The value for Ti may be at max0 | The value for Ti may be at max0 | ||
| V | 0.2 |
力学性能
| 热处理 / 状态 | 屈服强度 | 抗拉强度 | 伸长率 | 断面收缩率 | 冲击功 | 硬度 |
|---|---|---|---|---|---|---|
| 焊接钢管 12 < d <= 20 mm (横向) | ≥410 | 530–680 | ≥19 | ≥39 ISO V-Notch acc. to DIN 50115 | ||
| 焊接钢管 12 < d <= 20 mm (纵向) | ≥410 | 530–680 | ≥21 | ≥63 ISO V-Notch acc. to DIN 50115 | ||
| 焊接钢管 20 < d <= 40 mm (横向) | ≥400 | 530–680 | ≥19 | ≥39 ISO V-Notch acc. to DIN 50115 | ||
| 焊接钢管 20 < d <= 40 mm (纵向) | ≥400 | 530–680 | ≥21 | ≥63 ISO V-Notch acc. to DIN 50115 | ||
| 焊接钢管 t <= 12 mm (横向) | ≥420 | 530–680 | ≥19 | ≥39 ISO V-Notch acc. to DIN 50115 | ||
| 焊接钢管 t <= 12 mm (纵向) | ≥420 | 530–680 | ≥21 | ≥63 ISO V-Notch acc. to DIN 50115 |