Development of a carburizing stainless steel alloy

Journal Article · Wed Jun 01 04:00:00 EDT 1994 · Advanced Materials and Processes; (United States)

OSTI ID:7053010

Wert, D E ^[1]

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1. Carpenter Technology Corp., Reading, PA (United States)

A new carburizing stainless steel alloy that resists corrosion, heat, and fatigue has been developed for bearing and gear applications. Pyrowear 675 Stainless alloy is vacuum induction melted and vacuum arc remelted (VIM/VAR) for aircraft-quality cleanliness. Test results show that it has corrosion resistance similar to that of AISI Type 440-C stainless, and its rolling fatigue resistance is superior to that of AISI M50 (UNS K88165). In contrast to alloy gear steels and Type 440C, Pyrowear 675 maintains case hardness of HRC 60 at operating temperatures up to 200 C (400 F). Impact and fracture toughness are superior to that of other stainless bearing steels, which typically are relatively brittle and can break under severe service. Toughness is also comparable or superior to conventional noncorrosion-resistant carburizing bearing steels, such as SAE Types 8620 and 9310.

• OSTI ID: 7053010
• Journal Information: Advanced Materials and Processes; (United States), Journal Name: Advanced Materials and Processes; (United States) Vol. 145:6; ISSN 0882-7958; ISSN AMAPEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360100* -- Metals & Alloys
ALLOYS
CARBURIZATION
CORROSION RESISTANT ALLOYS
DESIGN
HARDENING
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
STAINLESS STEELS
STEELS
SURFACE HARDENING
SURFACE TREATMENTS
USES