Surface Treatment Specs: dissimilar_metal_protection_austenitic_ss_copper_hi_ni
Electroplating and surface treatment specifications covering thickness ranges, hardness, corrosion resistance (salt spray hours), wear resistance, operating temperature limits, substrate compatibility, applicable standards, and finish appearance. Processes include zinc plating (clear/yellow/black chromate), zinc-nickel, bright electrolytic nickel, electroless nickel (mid/high phosphorus), hard chrome (hexavalent and trivalent), decorative chrome, tin, silver, gold, cadmium, anodizing (Type I/II/III per MIL-A-8625), zinc/manganese phosphate, black oxide, stainless steel passivation, and electropolishing.
| treatment category | treatment variant | dissimilar coupling context | notes | process type | standard | substrate compatibility |
|---|---|---|---|---|---|---|
| dissimilar_metal_protection_austenitic_ss_copper_hi_ni | rank1_metallic_coating_plus_paint | true | Rank 1 (most protective): Apply metallic coating to minimize electrical potential difference between metals to be joined plus paint or resin coating system; primarily to diminish ion contamination from metals of this group onto more anodic metals, reducing potential damage to the anodic metal | metallic coating + organic coating | (none specific) | austenitic stainless steel, PH stainless steel, super-strength stainless, heat-resistant stainless, brass-leaded, bronze, brass-bronze-low-copper, copper-high-nickel |
| dissimilar_metal_protection_austenitic_ss_copper_hi_ni | rank2_metallic_coating_no_paint | true | Rank 2: Apply metallic coating without paint or resin; for electrical or thermal conducting purposes; may overcoat completed assembly with paint or resin | metallic coating | (none specific) | austenitic stainless steel, PH stainless steel, super-strength stainless, heat-resistant stainless, brass-leaded, bronze, brass-bronze-low-copper, copper-high-nickel |
| dissimilar_metal_protection_austenitic_ss_copper_hi_ni | rank3_paint_sealed_faying | true | Rank 3: Apply paint or resin coating system and seal faying edges | organic coating + sealed faying edges | (none specific) | austenitic stainless steel, PH stainless steel, super-strength stainless, heat-resistant stainless, brass-leaded, bronze, brass-bronze-low-copper, copper-high-nickel |
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