What is BS EN 13523-14 - Chalking (Helmen method) test of coil coated metals about?
EN 13523 series is a European Series that discusses the test methods for coil coated metals.
BS EN 13523-14 is the fourteenth part of the multi-part series that specifies the procedure for determining objectively the chalking resulting from natural or artificial weathering of an organic coating on a metallic substrate.
Under BS EN 13523-14 the advantage of using this procedure for measuring the chalking of an organic coating is that the result can be read off immediately on an instrument. Subjective judgment by visual comparison of test specimens with reference specimens is not necessary.
Reproducible results can only be obtained by careful execution of the test. Special attention is paid to the adhesive tape and its application to the test surface.
Note1: The test method under BS EN 13523-14 does not apply to embossed coatings. In the case of textured coatings, the degree of texture can influence readings. Also, dirt collection can influence readings on outdoor weathered specimens.
Note2: Different methods for assessing chalking are in use. The results of these different methods are not comparable.
Who is BS EN 13523-14 - Chalking (Helmen method) test of coil coated metals for?
BS EN 13523-14 on coil coated metals is useful for:
- Coil coating chemical industries
- Coal coated metal manufacturers
- Metal industries
Why should you use BS EN 13523-14 - Chalking (Helmen method) test of coil coated metals?
Chalking is the appearance of a loosely adherent powder on the surface of a film or coat arising from the degradation of one or more of its constituents.
BS EN 13523-14 provides guidelines for the measurement and calibration in the procedure for evaluating chalking caused by natural or artificial weathering of an organic coating on metallic materials.
With compliance and obedience to BS EN 13523-14, you can efficiently determine chalking to prevent environmental impact on metallic materials and maintain the quality and durability of coil coated metals.
What’s changed since the last update?
BS EN 13523-14:2014 supersedes BS EN 13523-14:2001 which has been withdrawn. BS EN 13523-14 includes some changes with reference to BS EN 13523-14:2001. These include:
- The text was editorially revised, and the normative references were updated
- In 8.4.2 rubbing with a finger as an alternative to rubbing with the plastic spatula for an optimum adhesion between the tape and the coating was added