Maraging steel

US10378072B2 · kind B2 · utility

Assignee

• DAIDO STEEL CO., LTD. · JP

Inventors

• Keita Hinoshita · Nagoya, JP
• Kenji Sugiyama · Yokosuka, JP
• Hiroyuki Takabayashi · Nagoya, JP
• Shigeki Ueta · Nagoya, JP

Key dates

• Filing date: May 13, 2016
• Grant date: Aug 13, 2019
• Expiry date: May 13, 2036

Classification

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

Abstract

The present invention relates to a maraging steel containing, in terms of mass %, 0.10≤C≤0.35, 9.0≤Co≤20.0, 1.0≤(Mo+W/2)≤2.0, 1.0≤Cr≤4.0, a certain amount of Ni, a certain amount of Al, and V+Nb≤0.60, with the balance being Fe and inevitable impurities, in which in a case of V+Nb≤0.020, the amount of Ni is 6.0≤Ni≤9.4 and the amount of Al is 1.4≤Al≤2.0, and in a case of 0.020<V+Nb≤0.60, the amount of Ni is 6.0≤Ni≤20.0 and the amount of Al is 0.50≤Al≤2.0.