Corrosion at 316SS caused by engraving process of marking

[yose]

I have to mark our 316 SS mat'l Fitting product. The marking process will be done using electrical engraved.
I don't what problem will be appear by doing this engraved on 316 SS.
Is there anyone has the same problem with me before or heard about it...please advise me.
Thanks, Yose

 

[icehorse1]

Hi Yose,
If you still have a need, we can mark your SS parts with a permanent black mark. You can see examples at:

http://www.custom-etched.com.

Regards,
Will

 

[mcguire]

disturbing the surface will decrease corrosion resistance if oxide is formed or if inclusions are exposed. corrosion resistance can be restored by pickling with nitric acid.

 

[AEF]

Careful with the icehorse1 response. Make sure that the marker is suitable for use on stainless and has acceptable chloride and halide contents.

 

[icehorse1]

Good point AEF! You can get the particulars, including chemical resistance testing at:

http://www.cerdecmark.com.

The laser energy (heat) actual anneals the active pigment in the formula onto the stainless steel, creating a new alloy which is slightly raised on the SS surface.