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Plastic Chrome Surface Rusting

Hi, I am Rajesh working with M & M automobile company with quality dept.
I have below query on the emblems getting rusty / stained.
When the plastic chrome plated emblems are exported fixed on the vehicles through the sea transport the emblems gets red rust / stains on its surface.

Request to suggest what should I checked in process at supplier end and what could lead to cause of such problem.

With Regards,

Rajesh Mistry
Employee - Nashik, Maharashtra, India
2007

I can understand a hundred ways in which a copper-nickel-chrome plated plastic emblem can fail to meet expectations. But I can't understand how something that contains nothing ferrous can possibly generate red rust. Somebody help me too!

Ted Mooney, P.E.
Striving to live Aloha
(Ted can offer longterm or instant help)
finishing.com - Pine Beach, New Jersey
2007

2007

I found this reply in another question(44207).

"Some shops are now using a nickel/steel mixture to help abate the cost of nickel."

This might be the reason why the parts get red rust.

Roger Larsson
- Ulricehamn, Sweden

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