Presented in Partnership with:
 
 

Ask the Expert Question-and-Answer Archive
(Hard Chrome Plating)

by Randy Taylor, Advanced Tooling Corporation.
February, 2011

Rust Formation of Hard Chrome Plated Shaft-reg

Q. We have use the rubber wood for stacking the hard chrome plated shaft. After 5 to 6 months the shaft getting fully corroded at the contact portion of rubber wood,but the remaining area found free from corrosion. Can I know the reason for this corrosion? Please explain with details. Hope your positive reply at the earliest.

A. Although Chromium is touted as having "good corrosion resistance", hard chromium as a coating by it self is generally micro-porous. If standard hard chromium is plated directly on a ferrous substrate and subjected to the elements, corrosion can occur. To minimize corrosion of chromium on ferrous alloys, stored parts should be coated in cosmoline or oiled down.

For extreme cases of corrosive environments, a base coating of nickel under the chromium prevents corrosion.

Thank you for the question.

Randy Taylor

 

 

 

 


The information contained in this site is provided for your review and convenience. It is not intended to provide legal advice with respect to any federal, state, or local regulation.
You should consult with legal counsel and appropriate authorities before interpreting any regulations or undertaking any specific course of action.

Please note that many of the regulatory discussions on STERC refer to federal regulations. In many cases, states or local governments have promulgated relevant rules and standards
that are different and/or more stringent than the federal regulations. Therefore, to assure full compliance, you should investigate and comply with all applicable federal, state and local regulations.