耐候钢牌号 | C | Si | Mn | P | S | Cu | Cr | Ni |
Q400NQR1 | ≤0.12 | ≤0.75 | ≤1.10 | ≤0.025 | ≤0.008 | 0.20~0.55 | 0.30~1.25 | 0.12~0.65 |
Q450NQR1 | ≤0.12 | ≤0.75 | ≤1.50 | ≤0.025 | ≤0.008 | 0.20~0.55 | 0.30~1.25 | 0.12~0.65 |
Q500NQR1 | ≤0.12 | ≤0.75 | ≤2.0 | ≤0.025 | ≤0.008 | 0.20~0.55 | 0.30~1.25 | 0.12~0.65 |
Q550NQR1 | ≤0.16 | ≤0.75 | ≤2.0 | ≤0.025 | ≤0.008 | 0.20~0.55 | 0.30~1.25 | 0.12~0.65 |
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