STEEL ARTICLE
Application 1357/CHENP/2003 published 2005-11-25, filed 2003-08-28
A steel article consists of an alloy which contain in weight % 1.7-2.5 c; 0.1 - 2.0 si; 0.1-2.0 Mn Max 0.2 S; 12 16 Cr; 2.1-3.5 (Mo+W/2) ; 5-8 V; max 0.1 Nb balance essentially only iron and unavodable impurities. The stell has a micro-structure obtainable by a manufacturing of the steel which comprises spray forming of an ingot, the micro-structure of which contains 14-25 vol% carbides of mainly MC type where M substantially consists of vanadium of which carbides at least 80 vol% have a substantially rounded shape and a size in the longest extension of the carbides amounting to 1-10 um and M7C3 carbides, where M substantially consists of chromium which carbides typically have a more clongated shape than the MC carbides, of which MC carbides at least 80 % have a maximal extension amounting to 3-50 um.
Applicant
Uddeholm Tooling Aktiebolag
of SE-683 85 Hagfors sweden
Inventor
International Info
Classification: C22C 38/36
Publication Number: PCT/SE02/00372
Priority Information
0100737-6 Sweden 2001-03-06