Steel alloy and method of manufacture exhibiting enhanced combination of high temperature strength, oxidation resistance, and thermal conductivity

US12385116B2 · kind B2 · utility

Assignees

• Cummins Inc. · US
• UT-BATTELLE, LLC · US

Inventors

• Dean T. Pierce · Knoxville, US
• Govindarajan Muralidharan · Knoxville, US
• James A. Haynes · Knoxville, US
• Yong-Ching Chen · Columbus, US
• Quancang Ma · Columbus, US
• Howard S. Savage · Joliet, US
• Jian Zhou · Columbus, US

Key dates

• Filing date: Jun 17, 2021
• Grant date: Aug 12, 2025
• Expiry date: Jun 17, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21D2211/008
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A steel alloy with unique and superior combinations of properties such as elevated temperature strength, oxidation resistance, thermal conductivity and wear resistance. Disclosed embodiments comprise or substantially consist of: C in an amount of 0.2-0.45 weight %; Si in an amount of 0.6-1.1 weight %; Mn in an amount of ≤1.1 weight %; Cr in an amount of 2.5-4.0 weight %; one or both of Mo or W, a combined amount of the Mo or W≤0.9 weight %; Ti in an amount of 0.035-0.14 weight %; V in an amount of 0.18-1.1 weight % and the balance being Fe and usual impurities.