Welding material for stainless steels
US6042782A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 13, 1998 |
| Grant date | Mar 28, 2000 |
| Priority date | — |
| Expiry date | May 13, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12924
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
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##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.