The international standard specifying requirements for electroplated coatings of cadmium on iron and steel has been updated. BS EN ISO 2082:2017 Metallic and other inorganic coatings — Electroplated coatings of cadmium with supplementary treatments on iron or steel includes information to be supplied by the purchaser to the electroplater as well as requirements for heat treatment before and after electroplating.
The standard also supplies additional information on corrosion resistance, rinsing and drying, processing parts in bulk and dyeing of chromate conversion coatings.
What is this standard about?
Electrodeposits of cadmium are used to protect iron and steel from corrosion. This standard details how electroplating can been done safety and effectively in the sectors where cadmium’s use is still lawful.
Who is this standard for?
It is relevant in sectors where cadmium’s use isn’t banned, which is principally in:
Why should you use this standard?
It specifies the requirements of electroplated coatings of cadmium with supplementary treatments on iron and steel.
It includes information to be supplied by the purchaser to the electroplater, and requirements for heat treatment before and after electroplating. It notes that the coating thickness that can be applied to threaded components can be limited by dimensional requirements, including class or fit.
Annex C of the standard supplies additional information on:
•Rinsing and drying
•Processing parts in bulk
•Dyeing chromate conversion coatings
NOTE: this standard is not applicable to coatings applied:
•To sheet, strip or wire in the non-fabricated form
•To close-coiled springs
•For purposes other than protective, intrinsic lubricity, ductility, electrical conductivity and low contact resistance use
It does not specify requirements for the surface condition of the basis metal prior to electrodeposition with cadmium.
What’s changed since the last update?
The standard was revised to align with REACH, which from September 2017 banned the use of hexavalent chromium except where specially authorized.
In addition the revision is more user-friendly, with updated normative references, clarified essential requirements and the removal of non-essential requirements.
Source: BSI Newsletter