低合金钢焊条牌号型号GB熔敷金属化学成分(%)（≤）熔敷金属力学性能（≥）特点与用途CMnSiSP其余Rel/RP0.2MPaRmMPaA%AKVJJ502WCuE5003-G0.120.30/0.900.400.0300.035Cu0.20/0.50W0.20/0.5039049022-20℃27耐候钢专用焊条，用于铁路耐候车辆的焊接J502NiCuE5003-G0.120.30/0.900.350.0300.035Cu0.20/0.50Ni0.20/0.5039049022-20℃耐候钢专用焊条，用于铁路耐候车辆的焊接J502NiCrCuE5003-G0.120.30/0.900.400.0300.030Cr0.20/0.40Ni0.20/0.50Cu0.20/0.5039049022-20℃27主要用于耐候的铁路机车车辆的焊接J506NiCuE5016-G0.120.30/0.900.700.0300.035Cu0.20/0.50Ni0.20/0.5039049022-20℃47用于碳钢及50Kg级耐候钢的焊接J506NiCrCuE5016-G0.101.250.600.0200.025Cu0.20/0.40Cr0.30/0.80Ni0.20/0.5040050022-40℃60用于50Kg级耐候钢的焊接J506RE5016-G0.101.00/1.500.400.0300.035Ni≥0.5039049022-40℃47适用于采油平台船舶及高压容器等重要结构的焊接。J506RKE5016-G0.101.00/1.50)