We are getting a frosty / hazy gold plating on some 303 Stainless steel parts. (the parts look pitted upon 50X power inspection) The parts are passivated using Citric Acid prior to gold plating per ASTM A967-05 They then get a Sulfamate Nickel Strike and then a gold strike of 99.5 pure gold...
https://res.cloudinary.com/engineering-com/image/upload/v1430403351/tips/Cracking-1_nq71hy.bmp
I need some help
We have inclusions "cracks" in .250" bar stock we are machining. The inclusion is a black substance but we can not figure out what it is and is not all the way through the...
