EP 0765950 B2 20100120 - High strength low thermal expansion alloy
Title (en)
High strength low thermal expansion alloy
Title (de)
Hochfeste Legierung mit niedrigem Ausdehnungskoeffizient
Title (fr)
Alliage à haute résistance et à coefficient d'expansion thermique faible
Publication
Application
Priority
- US 51967895 A 19950825
- US 69648796 A 19960814
Abstract (en)
[origin: EP0765950A1] The alloy of the invention provides a low coefficient of thermal expansion alloy having a CTE of about 4.9 x10<-6> m/m/ DEG C or less at 204 DEG C and a relatively high strength. The alloy contains about 40.5 to about 48 nickel, about 2 to about 3.7 niobium. about 0.75 to about 2 titanium, about 0 to about 1 aluminum, about 3.7 or less total niobium plus tantalum and a balance of iron and incidental impurities. Alloys of the invention may be aged to a Rockwell C hardness of at least about 30.
IPC 8 full level
C22C 30/00 (2006.01); C22C 38/00 (2006.01); C22C 38/08 (2006.01); C22C 38/14 (2006.01); C22C 38/60 (2006.01)
CPC (source: EP)
C22C 38/08 (2013.01)
Citation (opposition)
Opponent :
- EP 0482889 A2 19920429 - INCO ALLOYS INT [US]
- JP H04180542 A 19920626 - HITACHI METALS LTD
- JP H04202642 A 19920723 - NIPPON KOKAN KK
Designated contracting state (EPC)
DE ES FR GB
DOCDB simple family (publication)
EP 0765950 A1 19970402; EP 0765950 B1 20011017; EP 0765950 B2 20100120; DE 69615977 D1 20011122; DE 69615977 T2 20020404; DE 69615977 T3 20100506; ES 2161983 T3 20011216; JP H09165653 A 19970624
DOCDB simple family (application)
EP 96306099 A 19960821; DE 69615977 T 19960821; ES 96306099 T 19960821; JP 22412496 A 19960826