Stainless steel alloys, turbocharger turbine housings formed from the stainless steel alloys, and methods for manufacturing the same

US10975718B2 · kind B2 · utility

Assignee

• Garrett Transportation I Inc. · US

Inventors

• Pavan Chintalapati · Savanuru, IN
• Balasubramani Nandagopal · Savanuru, IN
• Praveen Guruprasanna · Savanuru, IN
• Marc Wilson · Deyvillers, FR
• Vijaymahantesh Patil · Savanuru, IN
• Jean-Jacques Laissus · Épinal, FR

Key dates

• Filing date: Feb 12, 2013
• Grant date: Apr 13, 2021
• Expiry date: Jan 17, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49229
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Disclosed is an austenitic stainless steel alloy that includes, by weight, about 16% to about 21% chromium, about 4.5% to about 5.5% nickel, about 2% to about 5% manganese, about 1% to about 2% silicon, about 0.8% to about 1.2% tungsten, about 0.4% to about 0.8% molybdenum, about 0.4% to about 0.6% niobium, about 0.4% to about 0.5% carbon, and a balance of iron. The alloy is suitable for use in turbocharger turbine housing applications for temperature up to about 1020° C.