T O R C A D ELECTROLYTIC ZINC FINISHES
|
CORROSION PROTECTION GUIDE
|
|
Zinc Thickness
(Minimum)
|
Post Plating
Treatment
|
Corrosion Resistance
Salt Spray Hours
|
Torcad
Code
|
|
To White Rust
|
To Red Rust
|
|
8µm .0003"
|
Bright Chromate |
18
|
54
|
704
|
| |
Yellow Dichromate |
48
|
120
|
806
|
| |
Olive Drab |
96
|
168
|
884
|
| |
Black Chromate |
48
|
120
|
878
|
|
12µm .0005"
|
Bright Chromate |
24
|
120
|
708
|
| |
Yellow Dichromate |
72
|
168
|
808
|
| |
Olive Drab |
96 |
192
|
889
|
| |
Black Chromate |
72 |
192
|
897
|
|
