Steel alloy and a component comprising such a steel alloy

US10450644B2 · kind B2 · utility

Assignees

• ERASTEEL · FR
• AUBERT & DUVAL · FR

Inventors

• Johanna André · Uppsala, SE
• Fredrik Sandberg · Uppsala, SE
• M. Atman Benbahmed · Saint-Denis, FR
• Jacques Bellus · Montigny-lès-Metz, FR

Key dates

• Filing date: Nov 28, 2014
• Grant date: Oct 22, 2019
• Expiry date: Feb 15, 2036

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2204/66
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A carburisable steel alloy suitable for bearing components comprising, in percent by weight: C 0.05-0.5 wt. % Cr 2.5-5.0 wt. %, Mo 4-6 wt. %, W 2-4.5 wt. %, V 1-3 wt. %, Ni 2-4 wt. %, Co 2-8 wt. %, optionally one or more of the following elements: Nb 0-2 wt. % N 0-0.5 wt. % Si 0-0.7 wt. %, Mn 0-0.7 wt. %, Al 0-0.1 5 wt. %, wherein the combined amount of Nb+V is within the range 1-3.5 wt. %, the combined amount of C+N is within the range 0.05-0.5 wt. %, the balance being Fe and unavoidable impurities.