{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
      "$link": "bafkreibj5j2rkkojwrf4xgwbymvnccrebg2vpfn7764jrjt22mhvhoet6q"
    },
    "mimeType": "image/png",
    "size": 106873
  },
  "description": "The present disclosure provides a cold-rolled steel sheet having excellent high-temperature properties and room-temperature workability, including, by weight: carbon (C): 0.0005 to 0.003%, manganese (Mn): 0.20 to 0.50%, aluminum (Al): 0.01 to 0.10%, phosphorus (P): 0.003 to 0.020%, nitrogen (N)…",
  "path": "/patents/1284792",
  "publishedAt": "2021-03-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C21D9/46",
    "POSCO"
  ],
  "textContent": "The present disclosure provides a cold-rolled steel sheet having excellent high-temperature properties and room-temperature workability, including, by weight: carbon (C): 0.0005 to 0.003%, manganese (Mn): 0.20 to 0.50%, aluminum (Al): 0.01 to 0.10%, phosphorus (P): 0.003 to 0.020%, nitrogen (N): 0.0005 to 0.004%, sulfur (S): 0.015% or less, niobium (Nb): 0.005 to 0.040%, chromium (Cr): 0.10 to 0.50%, tungsten (W): 0.02 to 0.07%, and a balance of iron (Fe) and other inevitable impurities, wherein C, Nb, and W satisfy the following relationship 1, a microstructure comprises 95 area % or more of polygonal ferrite and 5 area % or less of acicular ferrite, and the cold-rolled steel sheet comprises (Nb,W)C-based precipitates having an average size of 0.005 to 0.10 μm and a method for manufacturing the same: 0.00025≤(2×Nb/93)×*W/184)/(C/12)≤0.0015 [Relationship 1] where, C, Nb, and W are in weight %.",
  "title": "COLD-ROLLED STEEL SHEET HAVING EXCELLENT HIGH-TEMPERATURE PROPERTIES AND ROOM-TEMPERATURE WORKABILITY, AND METHOD FOR MANUFACTURING SAME"
}