No registration, no passwords; no pop-up ads -- just aloha, fun, & authoritative answers.
As an eBay Partner & Amazon Affiliate we receive compensation for qualifying purchases.
Home /
Search 🔍
the Site
pub  Where the world gathers for
plating, anodizing, & finishing Q&As since 1989


Salt Spray Life of powder coat vs zinc olive green passivation

I would like to know the difference (hours) of salt spray test life between a] powder coated ( 50 microns Thickness ) b] Zinc plated with Olive Green passivated (8 microns thickness) steel sheet ?

Ravi Bakshi
- Mumbai, Maharashtra, India

The industry average for powder coating is > 350 hours to Red rust for powder coating. Olive chromating should get you past >150 hours to white rust and > 300 hours to red rust if your minimum thickness is 8 microns.

Khozem Vahaanwala
Khozem Vahaanwala
Saify Ind
supporting advertiser
Bengaluru, Karnataka, India
saify logo

I am getting my components powder coated with light grey, Dark grey and structure finish. Thickness is 80 microns. How many hrs of salt spray test it should pass?

Raghavendra Prasad
- Ahmedabad, India
April 27, 2011

Hi, Raghavendra.

Khozem has already offered a generic answer which is probably as good as you are going to get because the answer is going to depend on the type of parts, the type of powder, the care applied in pretreatment, etc. The supplier should be able to give you estimates for the particular powder you are using; usually this would be based on the type of polymer used, rather than its color. What is the pretreatment sequence?


Ted Mooney,
Ted Mooney, P.E.
Striving to live Aloha - Pine Beach, New Jersey
April 27, 2011

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories:

Chemicals &
Consult'g, Train'g
& Software

About/Contact  -  Privacy Policy  -  ©1995-2024, Pine Beach, New Jersey, USA  -  about "affil links"