Highly anticorrosive high strength stainless steel pipe for...

Details Highly anticorrosive high strength stainless steel pipe for... Highly anticorrosive high strength stainless steel pipe for...

2011-01-04

2011-01-04

King, Roy (Department: 1793)

Metal treatment

Stock

Ferrous

C148S592000, C148S909000, C420S061000, C420S069000, C420S070000

Reexamination Certificate

active

07862666

ABSTRACT:
A highly corrosion resistant high strength stainless steel pipe for linepipe, having a composition containing about 0.001 to about 0.015% C, about 0.01 to about 0.5% Si, about 0.1 to about 1.8% Mn, about 0.03% or less P, about 0.005% or less S, about 15 to about 18% Cr, about 0.5% or more and less than about 5.5% Ni, about 0.5 to about 3.5% Mo, about 0.02 to about 0.2% V, about 0.001 to about 0.015% N, and about 0.006% or less O, by mass, so as to satisfy (Cr+0.65 Ni +0.6Mo+0.55Cu−20C≧18.5), (Cr+Mo+0.3Si−43.5C−0.4Mn−Ni−0.3Cu−9 N≧11.5) and (C+N≦0.025). Preferably quenching and tempering treatment is applied to the pipe. The composition may further contain about 0.002 to about 0.05% Al, and may further contain one or more of Nb, Ti, Zr, B, and W, and/or Cu and Ca. The microstructure preferably contains martensite, ferrite, and residual γ.

REFERENCES:
patent: 6379821 (2002-04-01), Kushida et al.
patent: 0 649 915 (1995-04-01), None
patent: 1 179 380 (2002-02-01), None
patent: 1 477 574 (2004-11-01), None
patent: 1 514 950 (2005-03-01), None
patent: 03-75336 (1991-03-01), None
patent: 03 075336 (1991-03-01), None
patent: 08-41599 (1996-02-01), None
patent: 09-228001 (1997-09-01), None
patent: 09-316611 (1997-12-01), None
patent: 11-80881 (1999-03-01), None
patent: 2001140040 (2001-05-01), None
patent: 2001-179485 (2001-07-01), None
patent: 2001-279392 (2001-10-01), None
patent: 2002004009 (2002-01-01), None
patent: 2002 060910 (2002-02-01), None
patent: 2004-107773 (2004-04-01), None
Joseph R. Davis, ASM Handbook, 1990, ASM International, 10th Edition, vol. 1, 852-853.
Aggen et al., Wrought Stainless Steels-Fabrication Characteristics, ASM Handbook, 1990, ASM International, vol. 1, p. 13-14.
Davis et al., Structure/Property Relationships in Irons and Steels-Role of Microstructure, Metals Handbook Desk Edition, 1998, ASM International, 2nd Edition, p. 15-22.
Omura et al., English machine translation of JP 2001-140040A, May 2001.

Affiliated with

Also associated with

Rating

Highly anticorrosive high strength stainless steel pipe for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Highly anticorrosive high strength stainless steel pipe for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Highly anticorrosive high strength stainless steel pipe for... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2704558