| C | Si | Mn | P | Cr | Mo | Ni | 
| 0.05%-0.17% | 0.50%-0.80% | 0.40%-0.65% | 0.010%-0.012% | 1%-1.5% | 0.45%-0.65% | 0.20%-0.25% | 
2力学性能
| 钢板厚度/mm | 抗拉强度R/(N/㎡) | 屈服强度R/(N/㎡) | 伸长率A/% | 温度/℃ | 冲击吸收能量KV2/J | 180°弯曲试验 弯曲直径(b≥35mm) | 
| 6-100 | 520-680 | ≥310 | ≥19 | 20 | ≥34 | d=3a | 
| >100-150 | 510-670 | ≥300 | ≥19 | 20 | ≥34 | d=3a | 

 
         
  
 

 
   


 
 
 
 
 
 
 
 
