巴西 · NBR
1135
ABNT NBR NM 149:1998 — Free cutting steels, normal quality, for general uses in mechanical construction
化学成分
| 元素 | min | max | 相似 | 备注 |
|---|---|---|---|---|
| C | 0.32 | 0.39 | ||
| Mn | 0.5 | 0.9 | ||
| P | 0.06 | |||
| S | 0.15 | 0.25 | ||
| Si | 0.1 | 0.4 |
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 Drawn or drawn and ground > 10 <= 18 mm | HB 201–262 HB 30 | |||||
| 钢管 Drawn or drawn and ground > 18 <= 30 mm | HB 192–255 HB 30 | |||||
| 钢管 Drawn or drawn and ground > 3 <= 10 mm | HB 212–277 HB 30 | |||||
| 钢管 Drawn or drawn and ground > 30 <= 50 mm | HB 183–241 HB 30 | |||||
| 钢管 Drawn or drawn and ground > 50 <= 80 mm | HB 174–235 HB 30 | |||||
| 钢管 Drawn or drawn and ground > 80 <= 100 mm | HB 163–212 HB 30 | |||||
| 钢管 热轧或剥削或置地 > 18 <= 50 mm | HB ≤192 HB 30 | |||||
| 钢管 热轧或剥削或置地 > 3 <= 18 mm | HB ≤197 HB 30 | |||||
| 钢管 热轧或剥削或置地 > 50 <= 100 mm | HB ≤187 HB 30 |