Austenitic stainless steels for press forming

Details Austenitic stainless steels for press forming Austenitic stainless steels for press forming

C - Chemistry, Metallurgy

22

C

C22C 38/44 (2006.01) C22C 38/42 (2006.01) C22C 38/54 (2006.01) C22C 38/58 (2006.01)

Patent

CA 2172794

An austenitic stainless steel for press forming has considerably excellent deep drawability and bulging property as compared with those of the conventional one, which comprises C: 0.01-0.10 wt\%, Si: not more than 1.0 wt$, Mn: not more than 3.0 wt%, Ni: 6.0-10.0 wt%, Cr: 15.0-19.0 wt%, Cu: I.0-4.0 wt%, Al: 0.2-2.5 wt%, N: not more than 0.05 wt%, and if necessary, Mo: 0.03-3.0 wt% and B: 0.0010-0.020 wt%, and is adjusted to satisfy anyone of Ni equivalent: 21.0-23.0, crystal grain size number (N) of not less than 8, cleanness of 0.020%, low Si content and (C+N) amount ~ 0.04.

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