|
化学成分(摘自GB 713—2008) |
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|
牌号 |
化学成分(质量分数)/% |
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|
C② |
Si |
Mn |
Cr |
Ni |
Mo |
Nb |
V |
P |
S |
Alt |
|
|
Q245R① |
≤0.20 |
≤0.35 |
0.50~1.00③ |
|
|
|
|
|
≤0.025 |
≤0.015 |
≥0.020 |
|
Q345R① |
≤0.20 |
≤0.55 |
1.20~1.60 |
|
|
|
|
|
≤0.025 |
≤0.015 |
≥0.020 |
|
Q370R |
≤0.18 |
≤0.55 |
1.20~1.60 |
|
|
|
0.015~0.050 |
|
≤0.025 |
≤0.015 |
|
|
18MnMoNbR |
≤0.22 |
0.15~0.50 |
1.20~1.60 |
|
|
0.45~0.65 |
0.025~0.050 |
|
≤0.020 |
≤0.010 |
|
|
13MnNiMoR |
≤0.15 |
0.15~0.50 |
1.20~1.60 |
0.20~0.40 |
0.60~1.00 |
0.20~0.40 |
0.005~0.020 |
|
≤0.020 |
≤0.010 |
|
|
15CrMoR |
0.12~0.18 |
0.15~0.40 |
0.40~0.70 |
0.80~1.20 |
|
0.45~0.60 |
|
|
≤0.025 |
≤0.010 |
|
|
14Cr1MoR |
0.05~0.17 |
0.50~0.80 |
0.40~0.65 |
1.15~1.50 |
|
0.45~0.65 |
|
|
≤0.020 |
≤0.010 |
|
|
12Cr2Mo1R |
0.08~0.15 |
≤0.50 |
0.30~0.60 |
2.00~2.50 |
|
0.90~1.10 |
|
|
≤0.020 |
≤0.010 |
|
|
12Cr1MoVR |
0.08~0.15 |
0.15~0.40 |
0.40~0.70 |
0.90~1.20 |
|
0.25~0.35 |
|
0.15~0.30 |
≤0.025 |
≤0.010 |
|
|
① 如果钢中加入Nb、Ti、V等微量元素，Alt含量的下限不适用。 ② 经供需双方协议，并在合同中注明，C含量下限可不作要求。 ③ 厚度大于60mm的钢板，Mn含量上限可至1.20%。 |
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