{
  "$type": "site.standard.document",
  "description": "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…",
  "path": "/patents/932668",
  "publishedAt": "2017-01-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60B35/00",
    "NIPPON STEEL & SUMITOMO METAL CORP [JP]"
  ],
  "textContent": "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 Si + 0.9 Cr ‰¥ 0.50 where, each element symbol in Formulae (1) and (2) is substituted by the content (mass%) of a corresponding element.",
  "title": "RAIL VEHICLE AXLE"
}