国际标准 · ISO
TCR250 Class D
ISO 4999:2011 — Continuous hot-dip terne (lead alloy) coated cold-reduced carbon steel sheet of commercial, drawing and structural qualities
化学成分
wt% · 对数刻度- min – max 范围
- 典型值
力学性能
按热处理状态分组化学成分
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| C | 0.2 | Product analysis tolerance +0.04% | ||
| Cr | 0.15 | Product analysis: Cr <= 0.19% max | ||
| Cr+Mo | 0.16 | When one or more of these elements are specified | ||
| Cr+Ni+Cu+Mo | 0.5 | When one or more of these elements are specified | ||
| Cu | 0.2 | Product analysis: Cu <= 0.23% max | ||
| Mo | 0.06 | Product analysis: Mo <= 0.07% max | ||
| N | 0.015 | |||
| Nb | 0.008 | Product analysis: Nb <= 0.018% max; Heat analysis greater than 0 | ||
| Ni | 0.2 | Product analysis: Ni <= 0.23% max | ||
| P | 0.035 | Product analysis tolerance +0.01% | ||
| S | 0.035 | Product analysis tolerance +0.01% | ||
| Ti | 0.008 | Product analysis: Ti <= 0.018% max; For interstitial-free steels only | ||
| V | 0.008 | Product analysis: V <= 0.018% max; Heat analysis greater than 0 |
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 |
|---|---|---|---|---|---|---|
| 薄板 | ≥250 | ≥330 | ≥20 Lo = 50 mm; A = min. 18% for Lo = 80 mm |