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US 9,518,316 B2Granted
Motor vehicle component
AssigneeGM Global Technology Operations LLC
InventorHeike Kantereit
Life of this patent
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Abstract
A motor vehicle component, in particular body component, is disclosed in which a steel sheet has a corrosion protection coating arranged thereon. The steel sheet has a core with more than 90% of Martensite and an exterior zone with less than 90% Martensite. The corrosion protection coating is arranged on the exterior zone. A depth of this exterior zone amounts to at least 5 μm and/or at least 0.5% of a wall thickness of the steel sheet.
Claims6
A motor vehicle component comprising a steel sheet having:
- a core with more than 90% of Martensite,
- an exterior zone with less than 90% of Martensite, and
- a corrosion protection coating arranged on the exterior zone,
- wherein a depth of the exterior zone is in a range between 5 μm and 6 μm or between 0.5% and 0.6% of a wall thickness of the steel sheet.
1 more element
Dependencies are inferred from the claim text.