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Machine translation
1. (WO1998003692) HIGH-SPEED STEEL
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1998/003692    International Application No.:    PCT/FR1997/001328
Publication Date: 29.01.1998 International Filing Date: 17.07.1997
IPC:
C22C 33/02 (2006.01)
Applicants: THYSSEN FRANCE S.A. [FR/FR]; 6, avenue Gutenberg, Boîte postale 52, F-78310 Maurepas Cedex (FR) (For All Designated States Except US).
ADRIEN, Jacques [FR/FR]; (FR) (For US Only).
REMI, Bertrand [FR/FR]; (FR) (For US Only)
Inventors: ADRIEN, Jacques; (FR).
REMI, Bertrand; (FR)
Agent: CABINET CLAUDE BOIVIN; 9, rue Edouard Charton, F-78000 Versailles (FR)
Priority Data:
96/09080 19.07.1996 FR
Title (EN) HIGH-SPEED STEEL
(FR) ACIER A COUPE RAPIDE
Abstract: front page image
(EN)A steel produced by densified and agglomerated high-purity pre-alloyed powder metallurgy is disclosed. The steel comprises < 1 wt.% of manganese, < 1 wt.% of silicon, 4.50-6.45 wt.% of chromium, 4-6 wt.% of molybdenum, 6.10-6.50 wt.% of vanadium, 18.20-18.70 wt.% of tungsten, $m(F)0.020 of sulphur, $m(F)0.030 of phosphorus, $m(F)100 ppm of oxygen, 5-7 wt.% of cobalt, 0.050-0.080 wt.% of nitrogen, $m(F)0.020 of aluminium and 1.80-1.95 wt.% of carbon. The balance is iron plus the typical impurities arising during steel production. Said steel has a dispersion essentially consisting of carbides such as vanadium MC.
(FR)La présente invention a pour objet un acier obtenu par la métallurgie d'une poudre pré-alliée de haute pureté, agglomérée, densifiée. Selon l'invention l'acier a la composition pondérale suivante: Manganèse < 1%, Silicium < 1%; Chrome 4,50-6,45 %, Molybdène 4-6 %, Vanadium 6,10-6,50 %, Tungstène 18,20-18,70 %, soufre $m(F)0,020 %, Phosphore $m(F)0,030 %, Oxygène $m(F)100 ppm, Cobalt 5-7 %, Azote 0,050-0,080 %, $m(F)Aluminium 0,020 %, Carbone 1,80-1,95 %. Le complément étant du fer plus les impuretés caractéristiques de la pratique de la fabrication de l'acier, ledit acier ayant une dispersion essentiellement de carbures du type MC de Vanadium.
Designated States: AU, BR, CA, KR, MX, PL, US.
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE).
Publication Language: French (FR)
Filing Language: French (FR)