| 标准 | 技术协议 |
| 用途 | 用于制造轴 |
| 尺寸 | 根据技术协议 |
| APPLICATION | STEEL GRADE | OD/mm | WT/mm |
|---|---|---|---|
| BEARING AXLE PIPE | 20Mn2/SAE1527 | 127/133/146/152 178/194/219 | 8/9/10/12/14 16/18/22/24 |
| DRMNG AXLE PIPE | Q345B | 180/194/203/219 | 14/16/18 |
注：可以根据客户的要求调整化学成分和规格
钢级和化学成分
| 牌号 | 化学成份% | |||||
| 20Mn2 | C | Si | Mn | |||
| 0.17-0.24 | 0.17-0.37 | 1.40-1.80 | ||||
| 钢类 | P | S | Cu | Cr | Ni | Mo |
| 不大于 (％) | ||||||
| 优质钢 | 0.035 | 0.035 | 0.30 | 0.30 | 0.30 | 0.15 |
| 高级优质钢 | 0.25 | 0.025 | 0.25 | 0.30 | 0.30 | 0.10 |
| 特级优质钢 | 0.025 | 0.015 | 0.25 | 0.30 | 0.30 | 0.10 |
| STEEL GRADE | C | Si | Mn | P | S | Ni | Cr | Nb | Cu | Mo | V | AL |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Q345A | ≤0.20 | ≤0.50 | ≤1.70 | ≤0.030 | ≤0.030 | ≤0.50 | ≤0.30 | ≤0.07 | ≤0.03 | 0.10 | 0.15 | - |
| Q345B | ≤0.20 | ≤0.50 | ≤1.70 | ≤0.030 | ≤0.030 | ≤0.50 | ≤0.30 | ≤0.07 | ≤0.03 | 0.10 | 0.15 | - |
| Q345C | ≤0.20 | ≤0.50 | ≤1.70 | ≤0.030 | ≤0.030 | ≤0.50 | ≤0.30 | ≤0.07 | ≤0.03 | 0.10 | 0.15 | ≤0.015 |
| Q345D | ≤0.18 | - | - | ≤0.030 | ≤0.025 | ≤0.50 | ≤0.30 | ≤0.07 | ≤0.03 | 0.10 | 0.15 | ≤0.015 |
| Q345E | ≤0.18 | - | - | ≤0.025 | ≤0.020 | ≤0.50 | ≤0.30 | ≤0.07 | ≤0.03 | 0.10 | 0.15 | ≤0.015 |
