20HB是***钢板，主要用于***行业压力容器制造20HB化学成分20HB机械性能20HB订轧技术要求表2钢板的化学成分wt%钢号成分分析CSi≤MnP≤S≤TAl≥Cr≤Cu≤Mo≤Nb≤Ni≤Ti≤V≤20HR20HR-BP265GH熔炼分析≤0.200.400.801.400.0250.0150.0200.300.300.080.0200.300.030.02成品分析≤0.220.450.751.500.0300.0180.0150.350.350.110.0300.350.040.03)