EP 0246092 A3 19890503 - ALLOYS RESISTANT TO STRESS CORROSION CRACKING

Title (en)

ALLOYS RESISTANT TO STRESS CORROSION CRACKING

Publication

EP 0246092 A3 19890503 (EN)

Application

EP 87304275 A 19870514

Priority

US 86350886 A 19860515

Abstract (en)

[origin: EP0246092A2] Disclosed are iron, nickel, and cobalt based austenitic alloys containing 12 - 50 wt.% Cr, from 0.001 - 0.2 wt.% C,0- 3 wt.% Mo, 0 - 3 wt.% Mn,0 - 0.5 wt.% Si,0 - 0.2 wt.% A1,0 - 0.75 wt.% Zr, and at least one carbide-forming element whose carbide is more stable than chromium carbide, and which alloy, at equilibrium, generates a carbon concentration in solution which is insufficient to form chromium carbides at a temperature from about 425 DEG C - 750 DEG C. The preferred carbide-forming element is Hf and/or Ta.

IPC 1-7

C22C 38/26; C22C 19/05; C22C 19/07

IPC 8 full level

C22C 19/05 (2006.01); C22C 19/07 (2006.01); C22C 38/00 (2006.01); C22C 38/26 (2006.01); C22C 38/28 (2006.01)

CPC (source: EP)

C22C 19/05 (2013.01); C22C 19/07 (2013.01); C22C 38/26 (2013.01)

Citation (search report)

FR 2463192 A1 19810220 - HOWMET TURBINE COMPONENTS [US]
GB 2083499 A 19820324 - FIRTH BROWN LTD
GB 1087590 A 19671018 - MARTIN MARIETTA CORP
EP 0183536 A2 19860604 - NIPPON STEEL CORP [JP]
DE 3121782 A1 19830505 - MANNESMANN AG [DE]
[A] E. HOUDREMONT: "Handbuch der Sonderstahlkunde", 3rd edition, 1956, pages 486-489, Verlag Stahleisen mbH, D}sseldorf, DE, "Karbidbildenden Elemente (Legierte St{hle)"

Designated contracting state (EPC)

DE GB

DOCDB simple family (publication)

EP 0246092 A2 19871119; EP 0246092 A3 19890503; JP S6326336 A 19880203

DOCDB simple family (application)

EP 87304275 A 19870514; JP 11719087 A 19870515