EP 1550734 A1 20050706 - Stainless steel powder for high temperature applications

Title (en)

Stainless steel powder for high temperature applications

Title (de)

Rostfreies Stahlpulver für Hochtemperaturanwendungen

Title (fr)

Poudre d'acier inoxydable pour applications à haute température

Publication

EP 1550734 A1 20050706 (EN)

Application

EP 04027718 A 20041123

Priority

US 73319303 A 20031211

Abstract (en)

A method of producing parts from powdered metal comprising the steps of providing a metallurgic powder comprising iron, 0-0.6 weight percent carbon, 0.5-5.0 weight percent silicon, 0.5-6.0 weight percent nickel, 0.5-1.5 weight percent molybdenum, 0-0.7 weight percent manganese, and 12-20 weight percent chromium, the weight percentages calculated based on the total weight of the powder. Secondly, the powders are compressed at a pressure of 35 to 65 tsi to provide a green compact. Then, the compact is heated in an atmosphere to a temperature of 2100 DEG F to 2400 DEG F for 20 to 90 minutes, such that the resulting microstructure of the compact is either single phase ferritic or dual phase ferritic and austenitic. <IMAGE>

IPC 1-7

C22C 33/02; B22F 3/00

IPC 8 full level

F02B 39/00 (2006.01); B22F 3/00 (2006.01); B22F 3/02 (2006.01); B22F 3/12 (2006.01); B22F 3/16 (2006.01); B22F 3/23 (2006.01); B22F 5/02 (2006.01); B22F 5/10 (2006.01); C22C 33/02 (2006.01); C22C 38/00 (2006.01); C22C 38/34 (2006.01); F02B 37/24 (2006.01)

CPC (source: EP KR US)

B22F 3/12 (2013.01 - KR); B22F 3/23 (2013.01 - KR); B22F 5/02 (2013.01 - KR); B22F 5/10 (2013.01 - KR); C22C 33/0285 (2013.01 - EP US); B22F 2998/00 (2013.01 - EP US); B22F 2998/10 (2013.01 - EP US); B22F 2999/00 (2013.01 - EP US)

C-Set (source: EP US)

B22F 2998/00 + B22F 5/02
B22F 2998/10 + B22F 3/02 + B22F 3/10
B22F 2999/00 + B22F 3/1007 + B22F 2201/013 + B22F 2201/02
B22F 2999/00 + B22F 3/1007 + B22F 2201/20

Citation (search report)

[AD] US 3620690 A 19711116 - BERGSTROM THEODORE R
[AD] US 6365095 B1 20020402 - BERGKVIST ANDERS [SE]
[AD] US 6342087 B1 20020129 - ARVIDSSON JOHAN [SE], et al
[A] DE 3207276 A1 19821007 - BBC BROWN BOVERI & CIE [CH]
[A] US 4544420 A 19851001 - MONTGOMERY DALE [US]

Designated contracting state (EPC)

DE FR IT

DOCDB simple family (publication)

EP 1550734 A1 20050706; CN 1626298 A 20050615; JP 2005171382 A 20050630; KR 20050058215 A 20050616; US 2005129563 A1 20050616

DOCDB simple family (application)

EP 04027718 A 20041123; CN 200410100645 A 20041210; JP 2004332799 A 20041117; KR 20040104051 A 20041210; US 73319303 A 20031211