The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 15, 2004
Filed:
Mar. 02, 2001
Applicant:
Inventors:
Örjan Bergström, Sandviken, SE;
Pasi Kangas, Sandviken, SE;
Mattias Klockars, Gävle, SE;
Guocai Chai, Sandviken, SE;
Assignee:
Sandvik AB, Sandviken, SE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C 3/844 ;
U.S. Cl.
CPC ...
C22C 3/844 ;
Abstract
The present invention relates to a duplex stainless steel alloy with austenite-ferrite structure, which in hot extruded and annealed finish shows high strength, good corrosion resistance, as well as good weldability which is characterized in that the alloy contains in weight-% max 0.05% C, 0-2.0% Si 0-3.0% Mn, 25-35% Cr, 4-10% Ni, 2-6% Mo, 0.3-0.6% N, as well as Fe and normally occurring impurities and additions, whereby the content of ferrite is 30-70%.