EP 0377307 B1 19940406 - Powdered high speed tool steel.
Title (en)
Powdered high speed tool steel.
Title (de)
Schnellstahlpulver.
Title (fr)
Poudre d'acier rapide.
Publication
Application
Priority
JP 33007788 A 19881227
Abstract (en)
[origin: EP0377307A1] Disclosed is a powdered high speed tool steel of good wear resistance and toughness. The powdered high speed tool steel have the alloy composition essentially consisting of 1.2 - 4.5 % of C, up to 3.0 % of Si, up to 3.0 % of Mn, 3.0 - 6.0 % of Cr, 15.0 - 60.0 % of W (up to 30.0 % thereof may be replaced by Mo), 1.0 - 15.0 % of V and up to 20.0 % of Co, and the balance substantially of Fe, and the carbide particles in the steel is relatively large, and those having Heywood diameters 1 micron or more share at least 10 volume % of the whole carbide particles.
IPC 1-7
IPC 8 full level
C22C 33/02 (2006.01); C22C 38/00 (2006.01); C22C 38/24 (2006.01); C22C 38/30 (2006.01)
CPC (source: EP)
C22C 33/0278 (2013.01); C22C 38/24 (2013.01)
Designated contracting state (EPC)
AT DE FR GB IT SE
DOCDB simple family (publication)
EP 0377307 A1 19900711; EP 0377307 B1 19940406; AT E103993 T1 19940415; DE 68914429 D1 19940511; DE 68914429 T2 19940728; JP 2725333 B2 19980311; JP H02175846 A 19900709
DOCDB simple family (application)
EP 89313418 A 19891221; AT 89313418 T 19891221; DE 68914429 T 19891221; JP 33007788 A 19881227