KR950703069A

KR950703069A - STEEL OF HIGH CORROSION RESISTANCE AND STEEL OF HIGH CORROSION RESISTANCE AND WORKABILITY

Info

Publication number: KR950703069A
Application number: KR1019950700693A
Authority: KR
Inventors: 가또 겐지; 미야사까 아끼히로
Original assignee: 미노루 다나까; 신니뽄세이데스 가부시끼가이샤(Nippon Steel Corporation)
Priority date: 1993-07-06
Filing date: 1994-07-06
Publication date: 1995-08-23
Also published as: KR0157727B1; WO1995002074A1; EP0658632A4; AU668315B2; CA2143434A1; EP0658632A1; AU7083994A

Abstract

본 발명은 내식성과 가공성이 우수한 강 및 보다 구체적으로는 예를들어 자동차 및 선박의 내연기관에서 내연기관의 배기 계통의 내식성 및 가공성이 우수한 강에 관한 것이다.The present invention relates to steel having excellent corrosion resistance and workability, and more particularly to steel having excellent corrosion resistance and workability of an exhaust system of an internal combustion engine, for example in internal combustion engines of automobiles and ships.

Fe 및 불가피한 불순물로 구성된 잔량과 함께, Si : 0.01% 이상 내지 1.2% 미만, Mn : 0.1-1.5%, Cr : 2.5-9.9%, 및 Al : 3.0% 이상 내지 8.0%로 이루어지고, C : 0.02% 이하, P : 0.03% 이하, S : 0.01% 이하, 및 N : 0.02% 이하로 감소되며, 추가로 특정 조건의 식에 일치하도록 Nb, V, Ti, Zr, Ta, 및 Hf의 전체 0.01-0.5%로 이루어지고, 또는 추가로 Cu, Mo, Sb, Ni, W, 희토류 원소, 및 Ca 중에서 선택된 적어도 한가지 성분으로 이루어지는 것을 특징으로 한, 내식성이 우수한 강 및 내식성과 가공성이 우수한 강.With a balance consisting of Fe and inevitable impurities, Si: at least 0.01% to less than 1.2%, Mn: 0.1-1.5%, Cr: 2.5-9.9%, and Al: at least 3.0% to 8.0%, C: 0.02 % Or less, P: 0.03% or less, S: 0.01% or less, and N: 0.02% or less, and further add 0.01% of Nb, V, Ti, Zr, Ta, and Hf to conform to the formula of the specific conditions. A steel having excellent corrosion resistance and excellent corrosion resistance and workability, comprising 0.5% or further comprising at least one component selected from Cu, Mo, Sb, Ni, W, rare earth elements, and Ca.

Description

STEEL OF HIGH CORROSION RESISTANCE AND STEEL OF HIGH CORROSION RESISTANCE AND WORKABILITY

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims

Steel with excellent corrosion resistance, consisting of the following components, with the remainder composed of Fe and unavoidable impurities: from 0.01% by weight to less than 1.2% by weight, Mn: 0.1-1.5%, Cr: 2.5-9.9%, and Al: 3.0% More than 8.0%, and the other elements of the next upper limit; C: 0.02% or less, P: 0.03% or less, S: 0.01% or less, and N: 0.02% or less.

The steel according to claim 1, further comprising at least one component selected from the following as further components; Cu: 0.05-3.0% by weight, Mo: 0.05-2.0% by weight, Sb: 0.01-0.5% by weight, Ni: 0.01-2.0% by weight, and W: 0.05-3.0% by weight.

The steel having excellent corrosion resistance: 0.001-0.1% by weight, and Ca: 0.0005-0.03% by weight according to claim 1 or 2, further comprising at least one component selected from the following as additional components.

Steel with excellent corrosion resistance and workability, consisting of the following components, with the remainder composed of Fe and unavoidable impurities: Si: 0.01% by weight to less than 1.2% by weight, Mn: 0.1-1.5%, Cr: 2.5-9.9%, and Al : 3.0% or more to 8.0%, and reduced to the following components: C: 0.02% or less, P: 0.03% or less, S: 0.01% or less, and N: 0.02% or less, and meet the requirements indicated by the following equation Under conditions, 0.01-0.5% by weight of at least one element selected from Nb, V, Ti, Zr, Ta, and Hf:

The steel having excellent corrosion resistance and workability as claimed in claim 4, further comprising at least one component selected from the following: Cu: 0.05-3.0 wt%, Mo: 0.05-2.0 wt%, Sb: 0.01-0.5 wt% Ni: 0.01-2.0% by weight, W: 0.05-3.0% by weight.

The steel according to claim 4 or 5, further comprising at least one component selected from the following as additional components: steel having excellent corrosion resistance and workability: rare earth elements: 0.001-0.1% by weight, and Ca: 0.0005-0.03% by weight.

※ Note: The disclosure is based on the initial application.