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BS EN ISO 17668:2016

BS EN ISO 17668:2016

$142.49

Zinc diffusion coatings on ferrous products. Sherardizing. Specification

Published By Publication Date Number of Pages
BSI 2016 24
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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.

PDF Catalog

PDF Pages PDF Title
4 European foreword
Endorsement notice
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
11 4 General requirements
4.1 Surface condition base material
4.2 Information to be supplied by the purchaser
5 Acceptance inspection and sampling
12 6 Coating properties
6.1 Appearance
6.2 Thickness
6.2.1 General
6.2.2 Test methods
13 6.2.3 Reference areas
6.2.4 Magnetic method or electro-magnetic method
6.2.5 Gravimetric method
6.2.6 Thickness requirements
14 6.3 Acceptance criteria
6.4 Additional clearances for threaded components
7 Ceritificate of compliance
15 AnnexĀ A (normative) Information to be supplied by the purchaser to the sherardizer
16 AnnexĀ B (informative) Determination of thickness
18 AnnexĀ C (informative) General information
20 AnnexĀ D (informative) Corrosion resistance of sherardized layers
21 Bibliography

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BS EN ISO 17668:2016
$142.49