德国 · DIN
1.8977
DIN EN 10208-2:2009 — 易燃液体输送管线 - 钢管交货技术条件 - 第2部分：B级要求的管道
化学成分
| 元素 | min | max | 相似 | 备注 |
|---|---|---|---|---|
| Al | 0.015 | 0.06 | Al/N >= 2:1 | Al/N >= 2:1 |
| C | 0.16 | |||
| CEV | 0.43 | CEV= C + Mn/6 + (Cr+Mo+V)/5 + (Cr+Ni)/15; the CEV is only specified for the product analysis. | CEV= C + Mn/6 + (Cr+Mo+V)/5 + (Cr+Ni)/15; the CEV is only specified for the product analysis. | |
| Cr | 0.3 | |||
| Cu | 0.25 | |||
| Mn | 1.7 | For each reduction of 0 | For each reduction of 0 | |
| Mo | 0.1 | For these steel grades a molybdenum content up to 0 | For these steel grades a molybdenum content up to 0 | |
| N | 0.012 | |||
| Nb | 0.06 | |||
| Ni | 0.3 | |||
| Other | Chemical composition for larger wall thicknesses up to 40 mm is to be agreed. | Chemical composition for larger wall thicknesses up to 40 mm is to be agreed. | ||
| P | 0.025 | |||
| S | 0.02 | |||
| Si | 0.45 | |||
| Ti | 0.06 | |||
| V | 0.1 | |||
| V+Nb+Ti | 0.15 |
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 |
|---|---|---|---|---|---|---|
| 钢管 热机械轧制 (M) <= 25 mm (t - 壁厚) | 485–605 Yield stress is Rt0 | ≥570 | ≥18 For transverse specimens; for longitudinal specimens the values of A shall be 2 units higher. |