High strength stainless steel material

US12291767B2 · kind B2 · utility

Assignee

• Halliburton Energy Services, Inc. · US

Inventors

• Karthik Krishnan · Carrollton, US
• Chad William Glaesman · McKinney, US
• Arpana Singh · Singapore, SG

Key dates

• Filing date: Apr 22, 2022
• Grant date: May 6, 2025
• Expiry date: Apr 22, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C38/48
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Methods for improving a toughness and a strength of a stainless steel material are described herein. For example, a high strength stainless steel material can comprise at least 11 wt. % Cr, between 0.01 wt. % and 1.0 wt. % Ni, more 0 wt. % Mo, more than 0 wt. % W, more than 0 wt. % Ti, more than 0 wt. % Nb, and more than 0 wt. % V. In some examples, the high strength stainless steel material can be heat treated with at least one quench treatment and at least one tempering heat treatment. In some examples, the high strength stainless steel material can comprise between 0.01 wt. % and 0.5 wt. % Ni, no more than 0.25 wt. % Mo, no more than 0.1 wt. % W, no more than 0.1 wt. % Ti, no more than 0.1 wt. % Nb, and no more than 0.1 wt. % V.