Thank you very much Lxdude , this was very informative.
I found a company which is specialized on Boeing , Lockheed parts supplier and electroplating.
I sent them a long mail. They are test lab and production facility located in Ankara. If I can get help from them , that would be great.
Old Japanese Swordsmiths predict the alloy from metal color . I worked as an scanner operator and even 40 years master was not good enough to predict the CMYK of a spot on the drum.
I think I must deal with educated people and test machines.
But DAG and Kreutner could be the resource. This is very good idea.
Do you have suggestions for repair persons to be contacted ?