For Marine,boiler,pressure vessel,mining engineering machinery,ocean engineering structure and other important structure welding Item CodeModelChemical composition (%)(≤) Mechanical propertise(≥) GBCMnSiSPOtherRel/RP0.2RmAAKVMPaMPa%JTHJ506NiCuE5016-G0.121.250.70.0250.03Cu0.20/0.4039049022-40°CNi0.20/0.5027THJ506NiCrCuE5016-G0.11.250.60.020.025Cu0.20/0.4040050022-40°C60Cr0.30/0.80Ni0.20/0. ...