|
Zinc, Tin, Copper, Bright
Nickel or Electroless Nickel |
| (Good) |
Carbon steel
plated or unplated. Unplated is preferred
because cleaning steps will strip plated
fasteners.
|
|
(Bad) |
Aluminum fasteners will be destroyed in the
plating process.
Stainless steel fasteners can be plated but
at a higher cost due
to added prep steps to make plating stick to
stainless steel.
|
| |
|
Chromate Conversion Coating
(Chemtreat) |
| (Good) |
Stainless
steel or aluminum fasteners.
|
|
(Bad) |
Carbon steel
in a part voids our ability to etch the part
resulting in a less than perfect finish. |
| |
|
Iron Phosphate |
| (Good) |
Carbon
steel or stainless steel. (Aluminum fastener
is
acceptable in a spraywash phosphate system
only) |
|
(Bad) |
Aluminum is
unacceptable with emersion process because
fastener is damaged in the process. |
| |
|
|
Sulfuric Anodize |
| (Good) |
Aluminum |
|
(Bad) |
Both carbon
steel and stainless steel fasteners along
with
part are damaged in this process.
|
| |
|
|
Passivation |
|
(Good) |
Stainless steel |
|
(Bad) |
Aluminum and
carbon steel are damaged in this process. |
