Ferrite stainless steel for automobile exhaust system member...

Details Ferrite stainless steel for automobile exhaust system member... Ferrite stainless steel for automobile exhaust system member...

2007-09-11

2007-09-11

Ip, Sikyin (Department: 1742)

Metal treatment

Stock

Ferrous

C148S326000, C420S034000, C420S064000

Reexamination Certificate

active

11097772

ABSTRACT:
A ferrite stainless steel for an automobile exhaust system member superior in thermal fatigue strength comprised of, by wt %, C: 0.020% or less, Si: 0.02 to 0.15%, Mn: 0.05 to 0.20%, P: 0.040% or less, S: 0.010% or less, Al: 0.005 to 0.10%, N: 0.020% or less, Cr: 15 to 18%, Mo: 1.5 to 2.0%, Ti: 3×(C+N) to 0.25%, Nb: 0.4 to 0.8%, B: 0.0003 to 0.0050%, the C and N satisfying the relationship of C+N: 0.030% or less, and the Al, Si, and Mn satisfying the relationship of Al×(Si+Mn): 0.001 to 0.020, and a balance of Fe and unavoidable impurities. The 0.2% proof stress at 900° C. before heat treatment in the atmosphere at 900° C. for 300 hours is at least 15 MPa, and a difference of the 0.2% proof stress before and after the heat treatment is not more than 5 MPa.

REFERENCES:
patent: 5427634 (1995-06-01), Fujita et al.
patent: 3021656 (1993-10-01), None
patent: 06-100990 (1994-04-01), None
patent: 09049066 (1997-02-01), None
patent: 2001294990 (2001-10-01), None
patent: 3242007 (2001-12-01), None
patent: 2004060009 (2004-02-01), None
patent: 1999-014738 (1999-02-01), None
patent: WO93/21356 (1993-10-01), None
patent: WO97/34020 (1997-09-01), None
Camp-Isij, vol. 16 (2003)-544, Mar. 1, 2003.

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