Super non-magnetic soft stainless steel wire material having excellent cold workability and corrosion resistance, method for manufacturing same, steel wire, steel wire coil, and method for manufacturing same
US9863016B2 · kind B2 · utility
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Key dates
| Filing date | Sep 26, 2013 |
| Grant date | Jan 9, 2018 |
| Priority date | — |
| Expiry date | Sep 24, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12382
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This super non-magnetic soft stainless steel wire rod includes, in mass %, C: 0.08% or less, Si: 0.05% to 2.0%, Mn: more than 8.0% to 25.0% or less, P: 0.06% or less, S: 0.01% or less, Ni: more than 6.0% to 30.0% or less, Cr: 13.0% to 25.0%, Cu: 0.2% to 5.0%, N: less than 0.20%, Al: 0.002% to 1.5%, and C+N: less than 0.20%, with the remainder being Fe and inevitable impurities, in which Md30, which is expressed as Equation (a) described below, is −150 or less.Md30=413−462(C+N)−9.2Si−8.1Mn−9.5Ni−13.7Cr−29Cu (a)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.