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Minimum Salt Spray Test Requirements
With trivalent chromites and a sealer or topcoat
Alloy |
Thickness
(micrometers) |
Trivalent Chromite |
Hours to White Rust
(Barrel) |
Hours to Red Rust
(Barrel) |
Zinc-Nickel |
5 |
Clear |
120 |
720 |
Zinc-Nickel |
8 |
Clear/Black |
120 |
840 |
Zinc-Cobalt |
5 |
Clear |
96 |
264 |
Zinc-Cobalt |
8 |
Clear/Black |
96 |
408 |
Zinc-Iron |
5 |
Clear |
96 |
264 |
Zinc-Iron |
8 |
Clear/Black |
96 |
408 |
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