Steel and process for the manufacture of a component for bearings

US6403026B1 · kind B1 · utility

Assignees

• Ascometal · FR
• SNR Roulements · FR
• Valti Societe Anonyme pour la Fabrication de Tubes Roulements · FR

Inventors

• Jacques Bellus · Montigny-lès-Metz, FR
• Gilles Baudry · Metz, FR
• Gilles Dudragne · Rumilly, FR
• Daniel Girodin · Rumilly, FR
• Gérard Jacob · Avallon, FR
• Alain Vincent · Saint-Estève, FR
• Gérard Lormand · Villeurbanne, FR

Key dates

• Filing date: Jul 13, 2000
• Grant date: Jun 11, 2002
• Expiry date: Jul 13, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S384/912
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Steel for the manufacture of a component for bearings, the chemical composition of which comprises, by weight: 0.6%≦C≦1.5%; 0.4%≦Mn≦1.5%; 0.75%≦Si≦2.5%, 0.2%≦Cr≦2%; 0%≦Ni≦0.5%; 0%≦Mo≦0.2%; 0%≦Al≦0.05%; S≦0.04%; the balance being iron and impurities resulting from smelting and the composition furthermore satisfying the relationships: Mn≦0.75+0.55×Si and Mn≦2.5−0.8×Si. Process for the manufacture of a bearing component.