Blue

{
  "id": "MLC-T-IND-000642",
  "term": "Blue",
  "field": "Industrial and trades",
  "definition": "A thin, adherent oxide layer that forms on the surface of steel when heated to specific temperatures, typically between 290 and 310 degrees Celsius. This bluing process provides a degree of corrosion resistance and can also be used for aesthetic purposes. The color varies with temperature and the thickness of the oxide layer.",
  "subject": "Metallurgy",
  "translations": {
    "de": "blauanlaufen",
    "es": "azular",
    "fr": "bleuir"
  },
  "url": "https://mlchart.com/terminology/industrial/blue/"
}