['Toxic and Hazardous Substances - OSHA']

['Hexavalent Chromium']

02/27/2025

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How does welding create hexavalent chromium (also known as chromium VI or Cr(VI)) exposure?

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How does welding create hexavalent chromium (also known as chromium VI or Cr(VI)) exposure?

A welder’s exposure to hexavalent chromium may occur from inhalation of fumes when performing “hot work” such as welding, brazing, or torch-cutting stainless steel or other chromium-containing metals. In these situations the chromium is not originally hexavalent, but the high temperatures involved in the process result in oxidation that converts the chromium to a hexavalent state in the fume. Stainless steels, in general, have 12 to 30 percent chromium content.

['Toxic and Hazardous Substances - OSHA']

['Hexavalent Chromium']

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