Ask the Expert - Black marking vs. annealing

[@dougbuster5964]

I need to make some 4x4 inch stainless steel QR code plaques to be used outdoors. Which will hold up better black marking or anealing? Thanks!

[@KN-ix2xm]

Hey i bought a 30W Raycus Fiber Laser LiteMarker with 40-60Hz frequency range. Would annealing be possible at all especially for titanium? Thanks!

[@javierbustamante7622]

"Could you tell me approximately how long the laser annealing on grade 304 stainless steel lasts outdoors?"

[@TRUMPFInc]

Hi Javier, annealing parameters can be created to withstand most of outdoor corrosives such as salty environments. As long as the part does not get heated to its material specified annealing temperature, or the top layer of the surface grinded off the mark will be visible.

[@shawndla]

Thank you.