Welding material for stainless steels

Details Welding material for stainless steels Welding material for stainless steels

1998-05-13

2000-03-28

Yee, Deborah

Alloys or metallic compositions

Ferrous

Chromium containing, but less than 9 percent

420111, 420115, 428677, 21914623, C22C 3844

Patent

active

060427825

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##

REFERENCES:
patent: 4816085 (1989-03-01), Flasche et al.

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