RS ISO 17668: 2016
Zinc diffusion coatings on ferrous products — Sherardizing — Specification


This International Standard specifies minimum thickness requirements for six classes of zinc diffusion
layers applied to ferrous products by the sherardizing process for the purpose of protection against
corrosion and wear.
This International Standard does not specify any requirements for the surface condition (finish or
roughness) of the basis material before sherardizing.
Post-treatments (conversion coatings), after-treatments or organic over-coatings (Duplex) of
sherardized articles are not in the scope of this International Standard.
NOTE 1 For general information about post-treatments, see Annex C and Annex D.
This International Standard does not apply to sherardized products (e.g. fasteners, tubes) for which
specific standards exist and which might include additional requirements or requirements which are
different from those of this International Standard.
NOTE 2 Individual product standards can incorporate this International Standard for the coating by quoting
its number, or can incorporate it with modification specific to the product

General Information

RS ISO 17668: 2016ADOPTED ISO STANDARDSMetallurgy21First Edition
Jun 2023
Price: RWF 19,500

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