Fe-Cr alloy exhibiting excellent ridging resistance and surface characteristics

US5662864A · kind A · utility

Assignee

• Kawasaki Steel Corporation · JP

Inventors

• Yasushi Kato · Kizugawa, JP
• Takumi Ujiro · Tokyo, JP
• Susumu Sato · Chiba, JP
• Koji Yamato · Chiba, JP

Key dates

• Filing date: Aug 14, 1996
• Grant date: Sep 2, 1997
• Expiry date: Aug 14, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C38/28
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

It is directed to provide an Fe--Cr alloy exhibiting an excellent ridging resistance and surface characteristic, comprising: PA1 0.01% (percent by weight; the same as below) or less of C; PA1 1.0% or less of Si; PA1 1.0% or less of Mn; PA1 0.01 or less of S; PA1 9% or more to 50% or less of Cr; PA1 0.07% or less of A1; PA1 0.02% or less of N; PA1 0.01% or less of O; and PA1 the balance being Fe and inevitable impurities; wherein the C and N contents satisfy the following equations: EQU N(%)/C(%).gtoreq.2, and EQU 0.006.ltoreq.[C(%)+N(%)].ltoreq.0.025; and the Ti content satisfy the following equations: EQU {Ti(%)-2.times.S(%)-3.times.O(%)}/[C(%)+N(%)].ltoreq.4, and EQU [Ti(%)].times.[N(%)].ltoreq.30.times.10.sup.-4.