EP 0247577 B1 19910925 - CORROSION RESISTANT AGE HARDENABLE NICKEL-BASE ALLOY
Title (en)
CORROSION RESISTANT AGE HARDENABLE NICKEL-BASE ALLOY
Publication
Application
Priority
- US 86780386 A 19860527
- US 86913886 A 19860530
Abstract (en)
[origin: EP0247577A1] An age hardenable nickel base chromium, molybdenum, alloy as well as intermediate products and articles made therefrom are disclosed which, in the solution treated and age hardened condition, have a 0.2% yield strength greater than 100 ksi combined with resistance to pitting and crevice corrosion and to stress corrosion cracking in chloride and sulfide environments at elevated temperatures up to about 500 F without requiring working below the recrystallization temperature of the alloy. Broad and preferred ranges are disclosed as follows: <IMAGE> the balance being at least about 55% nickel, the sum of the percent chromium and molybdenum being not greater than 31, and the sum of the percent niobium, titanium and aluminum being such that the total atomic percent thereof is about 3.5 a/o to 5 a/o when calculated as 0.64(w/o Nb) + 1.24(w/o Ti) + 2.20(w/o Al).
IPC 1-7
IPC 8 full level
C22F 1/10 (2006.01); C22C 19/05 (2006.01); C22F 1/00 (2006.01); E21B 17/00 (2006.01)
CPC (source: EP KR)
C22C 19/055 (2013.01 - EP); C22C 38/54 (2013.01 - KR); E21B 17/00 (2013.01 - EP)
Designated contracting state (EPC)
AT DE FR GB SE
DOCDB simple family (publication)
EP 0247577 A1 19871202; EP 0247577 B1 19910925; CA 1336945 C 19950912; DE 3773261 D1 19911031; IL 82587 A0 19871130; JP 2729480 B2 19980318; JP S63145740 A 19880617; KR 870011268 A 19871222; NO 872215 D0 19870526; NO 872215 L 19871130
DOCDB simple family (application)
EP 87107651 A 19870526; CA 538031 A 19870526; DE 3773261 T 19870526; IL 8258787 A 19870519; JP 13104287 A 19870527; KR 870005353 A 19870527; NO 872215 A 19870526