Clear Trivalent Passivation

Following the Zinc plating process the thickness deposited in conjunction with a clear thin film.

Trivalent passivation can be used for many applications subject to individual requirements and service conditions. Typical Specification used but not limited to BS EN ISO 2081:2008(E).

Protection Values

1
Fe
/
Zn
/
5
A
Coating Designation
Service Condition
Neutral Salt Spray Test
(duration in hours)

0 — Fe/Zn/5A

Purely Cosmetic

48

1 — Fe/Zn/8A

Indoors
(in warm dry atmospheres)

27

2 — Fe/Zn/12A

Indoors
(where condensation may occur)

120

3 — Fe/Zn/25A

Indoors
(in temperate conditions)

192

4 — No Category

Outdoors
(in severe corrosive conditions)

Thick Film
Trivalent Passivation type (C)

Clear Trivalent Passivation

Yellow Hexavalent Passivation

Trivalent Thick Film Passivation