rNi3MoCu、10CrNi2MoCu潜艇耐压壳体及其他结构用高强度可焊接合金结构钢板

10CrNi3MoV、10CrNi3MoCu、10CrNi2MoCu潜艇耐压壳体及其他结构用高强度可焊接合金结构钢板。10CrNi3MoV、10CrNi3MoCu、10CrNi2MoCu执行标准：GJB166310CrNi3MoV、10CrNi3MoCu、10CrNi2MoCu分类：10CrNi3MoV代号921A使用厚度10~35mm10CrNi3MoCu代号922A使用厚度36~70mm10CrNi2MoCu代号923A使用厚度5~9mm10CrNi3MoV、10CrNi3MoCu、10CrNi2MoCu交货状态：钢板应以淬火加高温回火交货状态。也可以热轧状态交货。10CrNi3MoV、10CrNi3MoCu、10CrNi2MoCu制造方法采用电弧炉加炉外精炼方法冶炼，用电弧炉冶炼。钢应经过充分脱氧和细化晶粒处理。10CrNi3MoV、10CrNi3MoCu、10CrNi2MoCu化学成分表1牌号代号化学成分，%CSiMnSP不大于10CrNi3MoV921A0.07~0.140.17~0.370.30~0.600.0150.02010CrNi3MoCu922A0.07~0.140.17~0.370.30~0.700.0150.02010CrNi2MoCu923A0.07~0.140.17~0.370.30~0.700.0150.020续表1牌号代号化学成分，%NiCrMoVCu10CrNi3MoV921A2.60~3.000.90~1.200.20~0.270.04~0.10~10CrNi3MoCu922A2.20~2.501.20~1.600.20~1.27~0.80~1.1010CrNi2MoCu923A2.00~2.300.70~1.000.17~0.25~0.80~1.10注：①硫磷含量的总和应不大于0.030%。②当采用电炉加炉外精炼方法冶炼时，硫含量应不大于0.010%。10CrNi3MoV、10CrNi3MoCu、10CrNi2MoCu化学成分允许偏差应符合表2规定。表2元素CSiMnNiCrMoVCu允许偏差%0~0.02±0.03±0.03±0.05±0.05±0.02±0.01±0.0310CrNi3MoV、10CrNi3MoCu、10CrNi2MoCu力学性能表3牌号代号公称厚度mm拉伸性能屈服点σs（MPa）抗拉强度σb（MPa）10CrNi3MoV921A10~35590~745记录10CrNi3MoCu922A36~70510~665记录10CrNi2MoCu923A5~9510~685记录续表3牌号代号拉伸性能冲击性能断后伸长率σs%断面收缩率ψ%试验温度C冲击吸收功AkvJ纤维断面率Fa%不小于不小于10CrNi3MoV921A1650-208010010CrNi3MoCu922A1650-208010010CrNi2MoCu923A16--20记录记录10CrNi3MoV、10CrNi3MoCu、10CrNi2MoCu钢板的公称厚度及厚度允许偏差：表四牌号代号公称厚度公称宽度厚度允许偏差10CrNi3MoV921A10-191000-2000+0.80-0.4020-35+1.00-0.6010CrNi3MoCu922A36-49+1.50-0.6050-70+2.30-0.6010CrNi2MoCu923A5-71000-1500+0.70-0.408-91000-2200+1.00-0.4010CrNi3MoV、10CrNi3MoCu、10CrNi2MoCu钢板每米的不平度应符合表五表五牌号代号公称厚度不平度，不大于10CrNi3MoV921A10-1516-3510CrNi3MoV922A36-701010CrNi3MoV923A5-7208-9