Welded corrosion-resistant ferritic stainless steel tubing havin

Details Welded corrosion-resistant ferritic stainless steel tubing havin Welded corrosion-resistant ferritic stainless steel tubing havin

1988-10-18

1990-07-24

Nilson, Robert G.

Heat exchange

With protector or protective agent

138177, 148325, 148909, 165905, 420 69, F28F 2108

Patent

active

049429221

ABSTRACT:
Welded ferritic stainless steel tubing having high resistance to hydrogen embrittlement particularly adapted for use in heat exchangers handling chemical media containing hydrogen sulfide or nascent hydrogen and in cathodically protected heat exchangers. The ferritic stainless steel of the welded tubing consists essentially of, in weight percent, carbon at least 0.002, nitrogen at least 0.002, carbon plus nitrogen 0.02 max. and preferably 0.01 to 0.02, chromium 23 to 28, preferably 25 to 28, manganese up to 1, preferably up to 0.5, nickel 1 to 4, silicon up to 1, preferably up to 0.5, phosphorus up to 0.04, sulfur up to 0.02, preferably up to 0.005, molybdenum 2 to 5, preferably 2 to 4, aluminum up to 0.1, columbium 0.60 max. with columbium being at least equal to eight times carbon plus nitrogen, and the balance iron and incidental impurities.

REFERENCES:
patent: 4119765 (1978-10-01), Pinnow
patent: 4360381 (1982-11-01), Tarutani
patent: 4570708 (1986-02-01), Tiberg
patent: 4726853 (1988-02-01), Gressin

Affiliated with

Also associated with

Rating

Welded corrosion-resistant ferritic stainless steel tubing havin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Welded corrosion-resistant ferritic stainless steel tubing havin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Welded corrosion-resistant ferritic stainless steel tubing havin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1263325