| 规格： | 材质：Q345B合金钢 | 产地：进口/国产 |
化学成分：
牌号 | C | Si | Mn | P | S | V | Nb | Al | Ti |
Q345A | 0.20 | ≤0.55 | ≤1.70 | ≤0.045 | ≤0.045 | 0.02-0.15 | 0.015-0.060 | - | 0.02-0.20 |
Q345B | ≤0.20 | ≤0.55 | ≤1.70 | ≤0.040 | 0.040 | 0.02-0.15 | 0.015-0.060 | - | 0.02-0.20 |
Q345C | ≤0.20 | ≤0.55 | ≤1.70 | ≤0.035 | ≤0.035 | 0.02-0.15 | 0.015-0.060 | ≥0.015 | 0.02-0.20 |
Q345D | 0.18 | ≤0.55 | ≤1.80 | ≤0.030 | ≤0.030 | 0.02-0.15 | 0.015-0.060 | ≥0.015 | 0.02-0.20 |
Q345E | ≤0.18 | ≤0.55 | ≤1.80 | ≤0.025 | ≤0.025 | 0.02-0.15 | 0.015-0.060 | ≥0.015 | 0.02-0.20 |
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