Black Ziron
Zinc Iron alloy deposit for extended corrosion
resistance and environmental durability
Black Ziron uses proven alkaline, non-cyanide plating chemistry for even plate
distribution over a wide range of current density. Many jobs which require expensive
internal anodes (if plated in cyanide or acid zinc solutions) can be done without
dedicated fixtures saving considerable money.
The benefits of iron addition form a corrosion resistance standpoint are maximized while
alloying zinc with a controlled amount of iron resulting in a 0.3 - 0.8 weight percent
iron deposit. Black Ziron offers consistent corrosion resistance at least
five times better than that of conventional zinc plating in many applications.
Alternatively, Anoplate's Ziron alloy coating is offered with a yellow or olive
drab chromate.
Black Ziron utilizes a silver-free chromate post-treatment so there is no
tendency for the black to fade to green as frequently encountered with conventional black
zinc plating.
Zinc Alloy Deposits: Typical Hours to Rust in Salt Spray*
| Alloy/Chromate |
White Rust |
Red Rust |
| Black Ziron |
250 |
800 |
| Zinc - Cobalt / Black |
200 |
500 |
| Zinc - Cobalt / Yellow |
250 |
500 |
| Zinc - Tin / Black |
100 |
500 |
| Zinc / Yellow |
100 |
200 |
* Based on ASTM B117 Neutral Salt Spray (5%) Testing at
0.0002 inch thickness
Zinc Iron Alloy Specifications
| Originator |
Spec Title |
Designation |
| ASTM |
Electrodeposited Coatings for
Zinc Iron |
B842 |
| General
Motors |
Corrosion Protective
Zinc Alloy Plating |
GM 6280M |
* Black Ziron meets or exceeds the requirements of
these speciffications
|
