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:
Mar. 28, 2000
Filed:
May. 13, 1998
Sumikin Welding Industries Ltd., Hyogo, JP;
Sumitomo Metal Industries, Ltd., Osaka, JP;
Abstract
A welding material for use in a consumable or non-consumable electrode welding of stainless steels, capable of forming a weld metal with excellent corrosion resistance and mechanical properties, being drawn into a welding wire easily. The welding material is a composite welding wire composed of a steel shell and a filler material enveloped by the said steel shell and not containing slag forming agent. The welding material, as a whole, has the chemical composition as follows (by weight %): Not more than 0.3% C, not more than 1.0% Si, not more than 1.5% Mn, not more than 0.04% P, not more than 0.01% S, not more than 0.5% Al, 8.0 to 10.0% Mo, 22.0 to 26.0% Cr, 2.0 to 5.0% Mo, 0.12 to 0.24% N, not more than 3.0% Co, not more than 5.0% W, not more than 2.0% Cu, not more than 1.5% V and the equivalent PREW of the welding material is not smaller than 42.0 and ferrite volume index Ph of the welding material is 0.12 to 0.25, in which PREW and Ph are defined by the following formula 1 and formula 2 respectively: ##EQU1##