GB713-2014 Q345R化学成分:
标准 年号 | 牌号 | 化学成分,(质量分数)% | 其他 | ||||||||||||
C | Si | Mn | Cu | Ni | Cr | Mo | Nb | V | Ti | Alt | P | S | |||
GB713-2008 | Q345R | ≤ 0.20 | ≤ 0.55 | 1.20 ~ 1.60 |
| ≥ 0.020 | ≤ 0.025 | ≤ 0.015 | 2008 | ||||||
GB713-2014 | Q345R | ≤ 0.20 | ≤ 0.55 | 1.20 ~ 1.60 | ≤ 0.30 | ≤ 0.30 | ≤ 0.30 | ≤ 0.08 | ≤ 0.040 | ≤ 0.020 | ≤ 0.030 | ≤ 0.025 | ≤ 0.010 | Cu+Ni+Cr+Mo≤ 0.70 |
GB713-2014 Q345R力学性能:
钢板厚度mm | 抗拉强度Rm | 屈服强度Re | 伸长率A% | 温度 | 冲击功KV2/J | 弯曲试验180°b=2a |
>3-16 | 510-640Mpa | ≥345Mpa | 21 | 0°C,-20°C | 41 KV2/J | d=2a |
>16-36 | 500-630Mpa | ≥325Mpa | 21 | 0°C,-20°C | 41 KV2/J | d=3a |
>36-60 | 490-620Mpa | ≥315Mpa | 21 | 0°C,-20°C | 41 KV2/J | d=3a |
>60-100 | 390-510Mpa | ≥305Mpa | 20 | 0°C,-20°C | 41 KV2/J | d=3a |
>100-150 | 480-610Mpa | ≥285Mpa | 20 | 0°C,-20°C | 41 KV2/J | d=3a |
>150-200 | 470~600Mpa | ≥265Mpa | 20 | 0°C,-20°C | 41 KV2/J | d=3a |
GB713-2014 Q345R与欧标、美标相近材质对照
标准 | GB713-2014 | EN10028-2:2009 | ASME(2013) | IS08328-2:2011附录A(欧洲) | IS08328-2:2011附录B(美、日) |
钢号 | Q345R | P355GH | SA516Gr.70 | P355GH | PT480GH |
P % | ≤0.025 | ≤0.025 | ≤0.035 | ≤0.025 | ≤0.025 |
S | ≤0.010 | ≤0.010 | ≤0.035 | ≤0.010 | ≤0.025 |
KV2/J | 0°C,≥41 -20°C,≥41 | 0°C,≥34 -20°C,≥27 | 系附加要求 | 0°C,≥34 -20°C,≥27 | 双方协商 |
可协商40J | 可协商40J |