化学元素(质量分数)/% | |||||||||
牌号 | C | Si | Mn | Ni | V | Mb | Alt | P | S |
16MnDR | ≤0.20 | 0.15-0.50 | 1.02-1.60 | - | - | - | ≥0.020 | ≤0.025 | ≤0.012 |
15MnNiDR | ≤0.18 | 0.15-0.50 | 1.02-1.60 | 0.20-0.60 | ≤0.06 | ≥0.020 | ≤0.025 | ≤0.012 | |
09MnNiDR | ≤0.12 | 0.15-0.50 | 1.02-1.60 | 0.30-0.80 | - | ≤0.04 | ≥0.020 | ≤0.020 | ≤0.012 |
材料号 | 交货状态 | 钢板厚度/mm | 拉伸试验 | 冲击试验 | 弯曲试验 | |||
抗拉强度Rm,MPa | 屈服强度 | 伸长率A/% | 温度/℃ | V型冲击功 | 180° | |||
不小于 | 不小于 | b=2a | ||||||
09MnNiDR | 正火或正火加回火 | 6~16 | 440~570 | 300 | 23 | -70 | 34 | d=2a |
>16~36 | 430~560 | 280 | ||||||
>36~60 | 430~560 | 270 | ||||||
>60~120 | 420~550 | 260 |
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