Surface Treatment Specs: dissimilar_metal_protection_martensitic_ferritic_ss
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_martensitic_ferritic_ss | rank1_paint_or_resin | true | Rank 1 (most protective): Apply paint or resin coating system; 12% Cr steels undergo surface staining/limited rusting in corrosive environments but appreciably less than carbon steels; faying edges to be sealed to prevent crevice corrosion | organic coating | (none specific) | martensitic stainless steel, ferritic stainless steel (~12% Cr) |
| dissimilar_metal_protection_martensitic_ferritic_ss | rank2_bare_or_electroplated_sealed | true | Rank 2 (least protective listed): May be electroplated or used bare for non-persistent wet or marine atmosphere, and for electrical or thermal conducting purposes; faying edges must be sealed to prevent crevice corrosion | bare or electroplated with sealed faying edges | (none specific) | martensitic stainless steel, ferritic stainless steel |
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