Steel for hot stamping, hot stamping process and hot stamped component

US12297517B2 · kind B2 · utility

Assignee

• Ironovation Materials Technology Co., Ltd. · CN

Inventors

• Hongliang Yi · 东风镇, CN
• Dapeng Yang · 东风镇, CN
• Xiaochuan Xiong · 安丰镇, CN
• Guodong Wang · Changchun, CN

Key dates

• Filing date: Dec 27, 2018
• Grant date: May 13, 2025
• Expiry date: Feb 12, 2040

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/20
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Steel for hot stamping, a hot stamping process and a hot stamped component, in which the steel for hot stamping contains in weight percentage C: 0.2-0.4%, Si: 0-0.8%, Al: 0-1.0%, B: 0-0.005%, Mn: 0.5-3.0%, Mo: 0-1%, Cr: 0-2%, Ni: 0-5%, V: 0-0.4%, Nb: 0-0.2%, Ti: ≤0.01%, and impurity elements such as P, S, N unavoidable during smelting. The relationship 29*Mo+16*Mn+14*Cr+5.3*Ni≥30% is satisfied when B≤0.0005%, and 0.4-1.0% Al is contained when 0.0005%<B≤0.005%.