rNi3MoCu、10CrNi2MoCu潛艇耐壓殼體及其他結(jié)構(gòu)用高強度可焊接合金結(jié)構(gòu)鋼板

10CrNi3MoV、10CrNi3MoCu、10CrNi2MoCu潛艇耐壓殼體及其他結(jié)構(gòu)用高強度可焊接合金結(jié)構(gòu)鋼板。10CrNi3MoV、10CrNi3MoCu、10CrNi2MoCu執(zhí)行標準：GJB166310CrNi3MoV、10CrNi3MoCu、10CrNi2MoCu分類：10CrNi3MoV代號921A使用厚度10~35mm10CrNi3MoCu代號922A使用厚度36~70mm10CrNi2MoCu代號923A使用厚度5~9mm10CrNi3MoV、10CrNi3MoCu、10CrNi2MoCu交貨狀態(tài)：鋼板應以淬火加高溫回火交貨狀態(tài)。也可以熱軋狀態(tài)交貨。10CrNi3MoV、10CrNi3MoCu、10CrNi2MoCu制造方法采用電弧爐加爐外精煉方法冶煉，用電弧爐冶煉。鋼應經(jīng)過充分脫氧和細化晶粒處理。10CrNi3MoV、10CrNi3MoCu、10CrNi2MoCu化學成分表1牌號代號化學成分，%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續(xù)表1牌號代號化學成分，%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硫磷含量的總和應不大于0.030%。②當采用電爐加爐外精煉方法冶煉時，硫含量應不大于0.010%。10CrNi3MoV、10CrNi3MoCu、10CrNi2MoCu化學成分允許偏差應符合表2規(guī)定。表2元素CSiMnNiCrMoVCu允許偏差%0~0.02±0.03±0.03±0.05±0.05±0.02±0.01±0.0310CrNi3MoV、10CrNi3MoCu、10CrNi2MoCu力學性能表3牌號代號公稱厚度mm拉伸性能屈服點σs（MPa）抗拉強度σb（MPa）10CrNi3MoV921A10~35590~745記錄10CrNi3MoCu922A36~70510~665記錄10CrNi2MoCu923A5~9510~685記錄續(xù)表3牌號代號拉伸性能沖擊性能斷后伸長率σs%斷面收縮率ψ%試驗溫度C沖擊吸收功AkvJ纖維斷面率Fa%不小于不小于10CrNi3MoV921A1650-208010010CrNi3MoCu922A1650-208010010CrNi2MoCu923A16--20記錄記錄10CrNi3MoV、10CrNi3MoCu、10CrNi2MoCu鋼板的公稱厚度及厚度允許偏差：表四牌號代號公稱厚度公稱寬度厚度允許偏差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鋼板每米的不平度應符合表五表五牌號代號公稱厚度不平度，不大于10CrNi3MoV921A10-1516-3510CrNi3MoV922A36-701010CrNi3MoV923A5-7208-9