40cr鋼管彈性模量和切變模量 彈性模量E(20℃) /MPa 200000~211700 切變模量G(20℃) 80800 40cr合金管的線(膨)脹系數(shù) 溫度/℃ 20~200 20~300 20~400 20~500 20~600 20~700 備注 線(膨)脹系數(shù)/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 用鋼成分(%):0.37C,0.30Si,0.66Mn,0.95Cr,0.18Ni,0.016P,0.028S; 2 用鋼成分(%):0.42C,0.29Si,0.69Mn,0.87Cr,0.14Ni,0.010P,0.013S。
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