40Cr鋼的線(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
表2-3
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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