plating, anodizing, & finishing Q&As since 1989
I'm trying to find TT-P-1757 [affil link or DLA] type 2 class C? Do you know what the difference is between Type 1 and Type 2 class C? So far all I can find is type 1 bulk or type 2 Spray but not with the class C.
precision machining - Canoga Park, California, USA
Brian, have you gotten a copy of TT-P-1757 yet? It's at http://assist2.daps.dla.mil/quicksearch/, and fill in the "TT-P-1757" in the top box. You'll notice that it says Type I - Volatile content consists of non-photochemically reactive solvents Type II - Volatile organic compound (VOC) content less than or equal to 340 grams/liter (gm/l) (2.8 lb./gal) and that Class C refers to Chromate based corrosion-inhibitors. The Qualified Products List has long been cancelled, so you'll have to call around to find out who makes what. But at least having the spec may help. Good luck!
metallurgist - E. Aurora, New York
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