Galvanized surfaces : Dross acceptance criteria

[Taoufik Sbai]

Hello

For an automotive application, i have to set the boundary acceptance for dross / dross inclusions per unit surface area.

The only input that I found for says med dross less than 2mm are acceptable (Surface EUC 7 Standard) without referring to any quantity.

I will appreciate any guidance for this topic

Thanks

 

[Taoufik Sbai]

Hello all,

Is there any standard document that can be used ? ASTM 123 and ASTM 653 (Hot dip) don't refer to any Quality appearance criteria.

THanks in advance