Austenitic stainless steel and drill collar

Details Austenitic stainless steel and drill collar Austenitic stainless steel and drill collar

1983-01-06

1985-03-05

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75128A, 75128N, 148 38, 148 12E, 148 12B, C22C 3858

Patent

active

045028869

ABSTRACT:
A non-magnetic austenitic stainless steel, and a drill collar fabricated therefrom solely by hot forging, the steel having a 0.2% yield strength of at least 85 ksi in the hot worked condition, high stress corrosion cracking resistance, good ductility, and low magnetic permeability even if cold worked, and consisting essentially of, in weight percent, from 0.12% to 0.20% carbon, 11% to 14% manganese, about 16% to about 19% chromium, 1.5% to 2.7% nickel, 0.30% to 0.45% nitrogen, 0.5% to 1.0% copper, about 0.75% maximum molybdenum, about 0.80% maximum silicon, about 0.04% maximum phosphorus, about 0.025% maximum sulfur, and balance essentially iron, with the carbon:nitrogen ratio not greater than 0.6:1.

REFERENCES:
patent: 3082083 (1963-03-01), Levy et al.
patent: 3112195 (1963-11-01), Souresny
patent: 3756807 (1973-09-01), Hoshino et al.
patent: 3940266 (1976-02-01), Goller et al.
patent: 4386957 (1983-06-01), Farmer et al.

Affiliated with

Also associated with

Rating

Austenitic stainless steel and drill collar does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Austenitic stainless steel and drill collar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Austenitic stainless steel and drill collar will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1732672