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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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Rust Removal from Zn and Steel

2007

Hi,

May I know which chemical or process removes rust from Zn or Steel without actually "eating" into the parent metal itself? I.e the chemical or process do not react with the Zn or Steel.

Much thanks,

Rudy Elfian
Student - Singapore

An inhibited hydrochloric acid will remove rsut from steel with litle attack on the steel. Zinc is a very active metal so it can be hard to remove white rust in acid withoyt harming the zinc, but phosphatizing should work.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2007

For zinC you can use 5% EDTA solution(pH7),for steel 5% ammonium citrate(pH3,5).Hope it helps and good luck!

Goran Budija
- Zagreb,Croatia
2007

Thank you very much!

Rudy Elfian
- Singapore
2007

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