Maraging type spring steel

US6793745B2 · kind B2 · utility

Assignee

• Vacuumschmelze GmbH & Co. KG · DE

Inventors

• Hartwin Weber · Hanau, DE
• Waldemar Doering · Hasselroth, DE
• Gernot Hausch · Langenselbold, DE

Key dates

• Filing date: Sep 16, 2002
• Grant date: Sep 21, 2004
• Expiry date: Nov 13, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S148/909
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a high-strength, age-hardenable, corrosion-resistant maraging type spring steel, which is essentially comprised of 6.0 to 9.0 wt. % of Ni, 11.0 to 15.0 wt. % of Cr, 0.1 to 0.3 wt. % of Ti, 0.2 to 0.3 wt. % of Be and of a remainder consisting of Fe, whose martensite temperature Ms≧130° C. and which has a ferrite content cferrite of less than 3%.