ISO-1520 › Historical Revision Information
Paints & Varnishes - Cupping Test

ISO-1520 - 2ND EDITION - SUPERSEDED
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ISO 1520:2006 specifies an empirical test procedure for assessing the resistance of a coating of paint, varnish or related product to cracking and/or detachment from a metal substrate when subjected to gradual deformation by indentation under standard conditions.

For a multi-coat system, each coat may be tested separately or the complete system may be tested.

The method may be carried out as follows:

  • either as a 'pass/fail' test, by testing to a specified depth of indentation to assess compliance with a particular requirement;
  • or by gradually increasing the depth of indentation to determine the minimum depth at which the coating cracks and/or becomes detached from the substrate.
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87.040 (Paints and varnishes Including coating powders, paint coatings and protective paint systems)

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Document Number

ISO 1520:1999

Revision Level

2ND EDITION

Status

Superseded

Publication Date

Feb. 1, 1999

Committee Number

ISO/TC 35/SC 9