Alloys or metallic compositions – Ferrous – Nine percent or more chromium containing
Patent
1996-12-19
1998-12-01
Yee, Deborah
Alloys or metallic compositions
Ferrous
Nine percent or more chromium containing
420 71, 148906, 148325, 148326, C22C 3818
Patent
active
058433694
ABSTRACT:
To provide a stainless steel for anti-friction bearings, which is obtained by making its eutectic carbide contents finer in particle diameter and suppressing the generation of non-metallic substances to an extremely low level, thus having a homogenious and dense structure and permitting highly accurate machining. The provided stainless steel is composed of 0.60 to 0.75% of carbon, 10.5 to 13.5% of chromium, 1.0% or below of silicon and 0.3 to 0.8% of manganese, % being by weight, the remainder of the composition being iron and inevitably introduced impurities, has a hardness of HRC 58 or above, contains eutectic carbide particles of 10 .mu.m and below in diameter, and has oxygen and titanium concentrations each of 10 ppm or below.
REFERENCES:
patent: 5531836 (1996-07-01), Dezzani et al.
Daikuhara Yutaka
Obara Rikuro
Minebea Kabushiki-Kaisha
Yee Deborah
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