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NECE SPA
CLASSES OF OXIDATIONS
 
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 thickness appropriate 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
For Interiors without frequent manipulation
10
For exposition to rural/urban atmosphere with periodic maintenance
15
For exposition to industrial/marine atmosphere
20
For exposition to industrial/marine atmosphere ( strengthened coat)
 
NECE spa suggests:
 
Thickness

Use

5
For Interiors without frequent manipulation
10
For Interiors
15
For Externals
20
For exposition to aggressive atmosphere
25
For exposition to particularly aggressive atmosphere (British Standard BS 3987)
 
The Norm AAMA* 611-98 provides the following classes:
 
Class
Thickness**

Use

I

18
For Exterior Apllications

II

10
For Interior or Exterior Applications with regular maintenance
*American Architectural Manufacturers Association.
** Minimum coating thickness in μm.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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