40Cr钢的物理性能 40Cr钢的弹性模量和切变模量 尊龙国际 弹性模量E(20℃) /MPa 200000~211700 切变模量G(20℃) 80800
40Cr钢的弹性模量和切变模量 尊龙国际
弹性模量E(20℃)
/MPa
200000~211700
切变模量G(20℃)
80800
表2-2
40Cr钢的线(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
表2-3
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。
40Cr钢的热导率
100
200
300
400
500
600
热导率λ/W·(m·K)-1
32.6
30.9
29.3
28.0
26.7
25.5
表2-4