AUSTENITIC STAINLESS STEEL EXCELLENT IN RESISTANCE TO SULFURIC ACID CORROSION AND WORKABILITY

Title:

AUSTENITIC STAINLESS STEEL EXCELLENT IN RESISTANCE TO SULFURIC ACID CORROSION AND WORKABILITY

Document Type and Number:

WIPO Patent Application WO/1999/009231

Kind Code:

A1

Abstract:

An austenitic stainless steel which consists, on a weight basis, of up to 0.05 % carbon, up to 1.0 % silicon, up to 2.0 % manganese, up to 0.04 % phosphorus, up to 0.01 % sulfur, 12-27 % nickel, 15-26 % chromium, 3.0-8.0 %, excluding 3.0 %, copper, 2.0-5.0 %, excluding 2.0 %, molybdenum, up to 1.0 % niobium, up to 0.5 % titanium, up to 5.0 % tungsten, up to 1.0 % zirconium, up to 0.5 % aluminum, below 0.05 % nitrogen, up to 0.01 % calcium, up to 0.01 % boron, up to 0.01 % one or more rare earth elements, and iron and unavoidable impurities as the remainder. This steel is excellent in the resistance to sulfuric acid corrosion and workability.

Inventors:

SAGARA MASAYUKI (JP)
AZUMA SHIGEKI (JP)
KAJIMURA HARUHIKO (JP)

Application Number:

PCT/JP1998/003567

Publication Date:

February 25, 1999

Filing Date:

August 10, 1998

Export Citation:

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Assignee:

SUMITOMO METAL IND (JP)
SAGARA MASAYUKI (JP)
AZUMA SHIGEKI (JP)
KAJIMURA HARUHIKO (JP)

International Classes:

C22C38/00; C22C38/42; C22C38/44; F28F19/06; C22C38/58; F28F21/08; (IPC1-7): C22C38/42; C22C38/50; C22C38/54

Foreign References:

JPS52124411A	1977-10-19
JPH02170946A	1990-07-02
JPH02290949A	1990-11-30
JPH04346638A	1992-12-02
JPH05156410A	1993-06-22

Other References: