What is ISO 2106 about?
ISO 2106 specifies a gravimetric method for determining the mass per unit area (surface density) of anodic oxidation coatings on aluminium and its alloys.
ISO 2106 is applicable to all oxidation coatings formed by anodizing aluminium and its alloys, either cast or wrought, and is suitable for most aluminium alloys, except those in which the mass fraction of copper is greater than 6 %.
Note: A high content of copper in the alloy can lead to increased dissolution of the substrate aluminium.
Who is ISO 2106 for?
ISO 2106 on determining mass per unit area (surface density) of anodic oxidation coatings is relevant to:
- Corrosion engineers
- Coating and surface engineers
Why should you use ISO 2106?
Anodizing is an electrochemical process that converts the metal surface into a decorative, durable, corrosion-resistant, and anodic oxide finish.
ISO 2106 assists the user with an anodic oxidation coating. The anodic oxidation coating on a weighed test specimen of the known surface area is dissolved without significantly attacking the substrate aluminium, using a solution of phosphoric acid and chromium oxide or phosphoric acid and sodium molybdate of specified concentration. ISO 2106 advices using only reagents of recognized analytical grade and only distilled water or deionized water. The test specimen is taken from a significant surface of the product, where the anodic oxidation coating formed thereon satisfies the quality requirements for the application of the product.
Overall, ISO 2106 is helpful as it assists the user in determining mass per unit area (surface density) of anodic oxidation coatings through the gravimetric method which can help you out in your business.
What’s changed since the last update?
BS EN ISO 2106:2020 supersedes BS EN ISO 2106:2011, which is withdrawn.
BS EN ISO 2106:2020 replaces the third edition (ISO 2106:2011), which has been technically revised. The main changes compared with the previous edition are as follows:
- Phosphoric acid/sodium molybdate solution has been added as a test solution
- The information of the test specimen has been added
- Formula (2) has been corrected
