1、1CS77.140.85J32B中华人民共和国国家标准GB/T33083一2016大型碳素结构钢锻件技术条件Heavy carbon structural steel forgings-Technical specification2016-10-13发布2017-05-01实施中华人民共和国国家质量监督检验检疫总局中国国家标准化管理委员会发布GB/T33083-20164.4补焊对于有缺陷的锻件，在焊接评定结果满足同一材料牌号的力学性能，并征得需方认可后，方可通过补焊进行修复。5技术要求5.1化学成分5.1.1供方应对每炉（每包）钢水进行熔炼分析，分析结果应符合表1规定。多炉合浇时报告权重平
2、均分析结果。5.1.2当需方有特殊要求时，供方应对锻件进行成品分析，其化学成分应符合表1规定，但允许有表2规定的偏差。表1化学成分%(质量分数)CrNiCu材料牌号SiMn100.070.130.170.370.350.650.0250.0250.150.300.25150.12-0.180.170.370.350.650.0250.0250.250.300.25200.17-0.230.170.370.350.650.0250.0250.250.250.25250.220.290.170.370.500.800.0250.0250.250.250.25300.27-0.340.17-0.37
3、0.50-0.800.0250.0250.250.250.25350.320.390.17-0.370.50-0.800.0250.0250.250.250.25400.370.440.170.370.50-0.800.0250.0250.250.250.25公0.420.500.17-0.370.50-0.800.0250.0250.250.250.25500.470.550.170.370.500.800.0250.0250.250.250.25550.52-0.600.17-0.370.50-0.800.0250.0250.250.250.25600.57-0.650.17-0.370.50-0.800.0250.0250.250.250.2516Mn0.120.200.200.601.201.600.0250.0250.350.350.2540Mn0.37-0.440.17-0.370.70-1.000.0250.0250.250.250.2550Mn0.480.560.170.370.701.000.0250.0250.250.250.2560Mn0.57-0.650.170.370.701.000.0250.0250.250.250.25经需方认可，10、15钢的化学成分分析结果可以不作验收依据。采用真空碳脱氧冶炼时，Si含量不大于0.10%。2
