无缝管|成都无缝管|四川无缝管|无缝管价格|成都无缝管价格|40Cr厚壁无缝管
40Cr厚壁无缝管的线(膨)胀系数: 温度/℃ 20~200 20~300 20~400 20~500 20~600 20~700 备注 线(膨)胀系数/C-1 (11.9~12.0) ×10-6 (13.3~13.4)×10-6 (14.3~14.4)×10-6 (15.0~15.1)×10-6 (15.3~15.4)×10-6 (15.4~15.5)×10-6 1 2 1 用钢成分(%):0.37C,0.30Si,0.66Mn,0.95Cr,0.18Ni,0.016P,0.028S; 2 用钢成分(%):0.42C,0.29Si,0.69Mn,0.87Cr,0.14Ni,0.010P,0.013S。
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