Title:
A CAST SHAPED ARTICLE MADE FROM HIGH STRENGHT, PRECIPIATION-HARDENABLE STAINLESS STEEL AND A PROCESS FOR MAKING SAME
Document Type and Number:
WIPO Patent Application WO2002070768
Kind Code:
A3
Abstract:
A shaped article which is manufactured b casting in air or under inert-gas shrouding at atmospheric pressure is disclosed. The shpaed articl eprovdies a surerior combination of high strength, hardness, ductility, and corrosion resistance compared to the known air. castable stainless steels. A cast article in accordance with this inveniton is made from a high strenght, astable, stainless steel alloy having the following weight percent composition C 0.1 max., Mn 2 max., Si 1 max., P 0.05 max., S 0.05 max., Cr 9-13, Ni 4-8, Mo 4-8, Co 8-16, N 0.1 max. The balance of the alloy is essentially iron and the usual impurities. A process for making such an article is also described.
Inventors:
MARTIN JAMES W
Application Number:
PCT/US2002/006308
Publication Date:
December 12, 2002
Filing Date:
February 28, 2002
Export Citation:
Assignee:
CRS HOLDINGS INC (US)
International Classes:
B22D17/00; C21D6/00; C21D6/02; C21D9/00; C22C38/00; A63B53/04; C22C38/18; C22C38/20; C22C38/26; C22C38/34; C22C38/44; C22C38/52; C22C38/54; C22C38/58; (IPC1-7): C22C38/44; C22C38/52; C21D9/00; C21D6/00; A63B53/04
Foreign References:
| EP0654541A1 | 1995-05-24 | |||
| EP0294210A1 | 1988-12-07 | |||
| US3861909A | 1975-01-21 | |||
| US3340048A | 1967-09-05 | |||
| GB1292637A | 1972-10-11 | |||
| GB882187A | 1961-11-15 | |||
| GB1336678A | 1973-11-07 | |||
| GB1179046A | 1970-01-28 | |||
| US3650845A | 1972-03-21 |
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