Rail vehicle axle
US10392683B2 · kind B2 · utility
1Cited by
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2Claims
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Assignee
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Key dates
| Filing date | Feb 25, 2015 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Sep 16, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/005
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Provided is a rail vehicle axle having an excellent fatigue limit and notch factor. A rail vehicle axle according to the present embodiment has a chemical composition consisting of, in mass %, C: 0.20 to 0.35%, Si: 0.20 to 0.65%, Mn: 0.40 to 1.20%, P: 0.020% or less, S: 0.020% or less, Cu: 0 to 0.30%, Ni: 0 to 0.30%, Cr: 0 to 0.30%, Mo: 0 to 0.08%, Al: 0 to 0.100%, N: 0.0200% or less, V: 0 to 0.060%, and Ti: 0 to 0.020%, with the balance being Fe and impurities, and satisfying Formulae (1) and (2): 0.58≤C+Si/8+Mn/5+Cu/10+Cr/4+V≤0.67 (1)Si+0.9Cr≥0.50 (2)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.