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冷拔异型钢管化学成分表
| 冷拔异形钢管化学成分表 | |||||||||
| 标准 | 牌号 | C | Si | Mn | P< | S< | Cr< | Ni< | Cu< |
| GB/T 3094 | 10 | 0.07-0.13 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | 0.15 | 0.30 | 0.25 |
| 20 | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | 0.25 | 0.30 | 0.25 | |
| 35 | 0.32-0.39 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 | 0.25 | 0.30 | 0.25 | |
| 45 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 | 0.25 | 0.30 | 0.25 | |
| Q195A | 0.06-0.12 | ≤0.30 | 0.25-0.50 | 0.045 | 0.050 | - | - | - | |
| Q215A | 0.09-0.15 | ≤0.30 | 0.25-0.55 | 0.045 | 0.050 | - | - | - | |
| Q235A | 0.14-0.22 | ≤0.30 | 0.30-0.65 | 0.045 | 0.050 | - | - | - | |
| Q295A | ≤0.16 | ≤0.55 | 0.80-1.50 | 0.045 | 0.045 | - | - | - | |
| Q345A | ≤0.20 | ≤0.55 | 1.00-1.60 | 0.045 | 0.045 | - | - | - | |
| Q390A | ≤0.20 | ≤0.55 | 1.00-1.60 | 0.045 | 0.045 | - | - | - | |
| DIN 1629 | St37.0 | ≤0.17 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | 0.25 | 0.25 | 0.25 |
| St44.0 | ≤0.21 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 | 0.25 | 0.25 | 0.25 | |
| St55 | 0.33-0.41 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 | 0.25 | 0.25 | 0.25 | |
| St52.0 | ≤0.22 | ≤0.55 | ≤1.60 | 0.035 | 0.035 | 0.25 | 0.25 | 0.25 | |
| CK45 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 | 0.25 | 0.25 | 0.25 | |