Alloys or metallic compositions – Ferrous – Nine percent or more chromium containing
Patent
1998-09-11
2000-05-09
Yee, Deborah
Alloys or metallic compositions
Ferrous
Nine percent or more chromium containing
420 69, 420101, 148325, 148326, C22C 3860, C22C 3824
Patent
active
060600187
ABSTRACT:
Cold tool steel having superior machinability, wear-resistance and minimized heat treatment size-change were obtained by specifying components and contents thereof, especially of C, Cr, Si, V and Mo, not by high-temperature soaking. Further, such prehardened cold tool steals as having excellent machinability even after heat-treatment together with minimum size-change were manufactured by further strictly specifying components, particularly of C, Si, Mn, Mo, V, and by specifying heat-treatment conditions.
Hayashida Keiichi
Machida Yuji
Otakane Masaaki
Yoshida Junji
Nippon Koshuha Steel Co. Ltd.
Yee Deborah
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