I hot salt blued entire guns in a stainless tank from in the mid 1960's until up into the late 1980's & never had any problems with the tank. I had just started my machinist apprenticeship & took over the bluing operation of a machinist in the shop who did gunsmithing on the side. He had the tank made & had used it successfully for some time before I started using it.


Miller/TN
I Didn't Say Everything I Said, Yogi Berra