Breathe easy! No maddening pop-up, sticky, or floating ads on this site :-)

Home /
Search 🔍
the Site
pub Where the world gathers for
plating, anodizing, & finishing Q&As since 1989


Chrome plating a surface of thermal sprayed stainless steel

August 15, 2010

Dear forum,
I'm Guna from Malaysia involved in thermal spray application. I would appreciate if you can advise me on proper pre treatment of thermal sprayed part which I intend to finish with chrome layer. The part is coated with stainless steel wire and oxidized due to arc and heat of the process.

[In another application] I would like to get advise on plating thermal sprayed coating with Chrome for aesthetic purpose. The base metal is cast iron and sprayed with metcoloy #2 which is:
Carbon .35%
Phosphorus .02%
Sulfur .02%
Manganese .35%
Nickel .5%
Chromium 13%
Silicon .5%
Iron Balance

The sprayed layer has ~4% porosity and it is oxidized. I assume the surface porosity can be closed by electroplating beside the improved appearance?

Thank you

Guna Subramaniam
thermal spray applicator - Shah Alam, Malaysia

August 21, 2010

Hi Guna,
as far as my experience goes, SS is troublesome. Normal low carbon thermal spray deposit is easy to plate. However chrome plate on thermal spray deposit will never seal those appox 4% porosity you talk of. Even if you plate in excess and post grind it,you are likely to be left behind with many pinholes. It's upto you to decide if it works for you

vikram dogra
Vikram Dogra
Irusha India - Chandigarh, India

(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    -    ©1995-2023, Pine Beach, New Jersey, USA