EMI RFI Shield Plating Inc

Zinc Plating

Zinc plating in accordance with ASTM B633.

Zinc-Nickel plating in accordance with AMS 2417 & ASTM B841.

Zinc-Iron plating in accordance with ASTM B842.

Specification Classification
Service Condition (Thickness)
Classes (Thickness)
SC 1 (mild)
5 microns, for iron/steel (Fe/Zn 5)
SC 2 (moderate)
8 microns, for iron/steel (Fe/Zn 8)
SC 3 (severe)
12 microns, for iron/steel (Fe/Zn 12)
SC 4 (very severe)
25 microns, for iron/steel (Fe/Zn 25)
Types (Supplementary treatment or Finish)
I
As-plated without supplementary treatment
II
With colored chromate conversion coatings
III
With colorless chromate conversion coatings
AMS 2417 (Zinc-Nickel Plating)
Types
1
As plated without supplementary treatment, service temperature 500⁰F (260⁰C) max.
2
As plated with supplementary chromate treatment.
Grades
A
Hexavalent chromate treatment, service temperature 250⁰F (121⁰C) max.
B
Trivalent chromium treatment, service temperature 375⁰F (191⁰C) max.
ASTM B841 (Zinc-Nickel Plating)
Types (Supplementary Conversion Coatings)
A
With Colorless conversion coatings.
B
With Yellow iridescent conversion coatings.
D
With black chromate conversion coatings.
E
Any of the above plus organic topcoat.
Grades (Thickness)
5
5 microns minimum
8
8 microns minimum
10
10 microns minimum
ASTM B842 (Zinc-Iron Plating)
Type
A
Zinc iron with black chromate conversion coating.
Grades (Thickness)
6
6 microns minimum
12
12 microns minimum
18
18 microns minimum