Summary for white bronze vs zinc plating Discussion
White bronze vs. zinc plating is discussed as a possible substitute for nickel plating on toy parts under EU toy safety rules. Rodney asks whether white bronze could replace nickel on screws, springs, decorative components, and shafts, noting that zinc plating may bring chromate conversion coating concerns because both Cr(III) and Cr(VI) migration are restricted in the toy safety directive. The only answer shown is from an unnamed respondent who says white bronze can be a suitable alternative, but only if the higher cost can be absorbed. The thread does not provide a detailed technical comparison of performance, durability, or compliance beyond that cost caveat, so the practical takeaway is limited to feasibility rather than a full recommendation.
Q. Since Nickel is to be listed as CMR substance in the EU toy safety directive 2009/48/EC and will thus be restricted, we are looking for alternative solution(s).
While most of our supplier indicate that Zinc plating is a viable option, our previous experiences with RoHS tells us that the chromate conversion coating would cause Cr(III)/Cr(VI) problem – the migration of both species are restricted in the TSD.
Could anyone please advice if white bronze plating is a good substitute for nickel-plating for parts such as screws, springs, decorative components or shafts?
Rodney Thu
– Shenzhen, China
October 8, 2012
A. Yes … provided you can absorb the cost difference!!
T.K. Mohan
plating process supplier – Mumbai, India
October 10, 2012