Oxidation Classes

OXIDATION CLASSES

Anodic oxidation is an electro-chemical process whose purpose is the creation, on the surface of aluminium frames, of a oxide coat.

This coat, preserve the substrates from the action of atmospheric agents and must therefore have a appropriate thickness to the ambient for which the frames are made, and for their use.

The Norm UNI 3952/66 provides the following classes:

THICKNESS

USE

5 μm

For Interiors without frequent manipulation .

10 μm

For exposition to rural/urban atmosphere with periodic maintenance

15 μm

For exposition to industrial/marine atmosphere

20 μm

For exposition to industrial/marine atmosphere ( strengthened coat).

NECE S.p.a. suggests:

THICKNESS

USE

5 μm

For Interiors without frequent manipulation .

10 μm

For Interiors.

15 μm

For Externals.

20 μm

For exposition to aggressive atmosphere.

25 μm

For exposition to particularly aggressive atmosphere (British Standard BS 3987).

The Norm AAMA* 611-98 provides the following classes:

CLASS

THICKNESS**

USE

I

18 μm

For Exterior Applications.

II

10 μm

For Interior or Exterior Applications with regular maintenance.

*American Architectural Manufacturers Association.
** Minimum coating thickness in μm.