EP 0334968 B1 19950208 - COMPOSITE ALLOY STEEL POWDER AND SINTERED ALLOY STEEL.
Title (en)
COMPOSITE ALLOY STEEL POWDER AND SINTERED ALLOY STEEL.
Title (de)
ZUSAMMENGESETZTES LEGIERUNGSSTAHLPULVER UND GESINTERTER LEGIERUNGSSTAHL.
Title (fr)
POUDRE D'ACIER ALLIE COMPOSITE ET ACIER ALLIE FRITTE.
Publication
Application
Priority
- JP 8801007 W 19880930
- JP 13740088 A 19880606
- JP 24407487 A 19870930
Abstract (en)
[origin: EP0334968A1] Improved composite alloy steel powder in which the alloy powder is partially diffused and fixed on the surface of the iron particles. The alloy steel contains as components Ni (0.50-3.50 wt.%), Mo (0.65-3.50 wt.%), Fe and impurities. The ratio of the wt. of Ni or Mo particles having a particle size of 45 micron or less to the wt. of all particles having that particle size is 2.4-4.2 times greater than the ratio of the wt. of Ni or Mo particles of all sizes to the wt. of all particles. In the compsn. Mo can be replaced by Mo+1/2W (0.65-3.50 wt.%) or W (1.30-7.00 wt.%); if necessary, C (0.3-0.8 wt.%) can be added. The sintered alloy steel contains Ni (0.50-3.50 wt.%), Mo (0.65-3.50 wt.%), Fe and impurities (the rest) with or without C (0.30-0.8 wt.%). It has a density of at least 7.0 g/cm3 and a tensile strength of at least 130 kgf/mm2. In this compsn. Mo can also be replaced by Mo + 1/2W (0.65-3.50 wt.%) or W (1.30-7.00 wt.%).
IPC 1-7
IPC 8 full level
C22C 33/02 (2006.01)
CPC (source: EP)
C22C 33/0207 (2013.01); C22C 33/0257 (2013.01); C22C 33/0264 (2013.01)
Citation (examination)
Designated contracting state (EPC)
DE FR GB SE
DOCDB simple family (publication)
EP 0334968 A1 19891004; EP 0334968 A4 19891228; EP 0334968 B1 19950208
DOCDB simple family (application)
EP 88908393 A 19880930