Trivalent Thick Film Passivation

Following the zinc plating process the thickness deposited in conjunction with a clear-iridescent thick 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
C
Coating Designation
Service Condition
Neutral Salt Spray Test
(duration in hours)

1 — Fe/Zn/5C

Indoors
(in warm dry atmospheres)

72

2 — Fe/Zn/8C

Indoors
(where condensation may occur)

120

3 — Fe/Zn/12C

Indoors
(in temperate conditions)

192

4 — Fe/Zn/25C

Outdoors
(in severe corrosive conditions)

360

Clear Trivalent Passivation

Yellow Hexavalent Passivation

Trivalent Thick Film Passivation