Steel for rotor shafts of electric machines

Details Steel for rotor shafts of electric machines Steel for rotor shafts of electric machines

C - Chemistry, Metallurgy

22

C

C22C 38/44 (2006.01) C22C 38/40 (2006.01) C22C 38/46 (2006.01)

Patent

CA 2063355

The present invention relates to new low-alloy steel compositions and rotor shafts for electric machines made such steel. High nickel and chromium contents ensure high strength and toughness, while other components, notably silicon and other impurities, are kept low with the result that magnetic properties remain good. One aspect provides a steel with the following proportions by weight: C 0.15 to 0.3% Si 0.1% Mn 1% Ni 3 to 5% Cr 2%, 3.5% (Mo + W) 0.1 to 1.0%, W being optional V 0.03 to 0.35%; and the remainder substantially Fe.

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