What is ISO 12687 – Humid sulfur test for metallic coatings about?
ISO 12687 is an International Standard that specifies a method of revealing discontinuities and porosity in metallic coatings, where they penetrate the coating layer or layers down to a silver, copper, or copper-alloy substrate.
This method is especially useful for coatings consisting of single or combined layers of any coating that does not significantly tarnish in a reduced-sulfur atmosphere, such as gold, nickel, tin, tin-lead palladium, and their alloys.
This test method is designed to show whether or not the coating meets the requirement concerning an acceptable porosity level specified by the user. The value specified is usually determined by user’s experience to be acceptable for the intended application.
Who is ISO 12687 - Humid sulfur test for metallic coatings for?
ISO 12687 on humid sulfur test for metallic coatings is useful for:
- Metallic coating manufacturers
- Quality control and testing personnel
- Product design engineers
- Mechanical and chemical engineers
- Automotive, aerospace and railway industry
Why should you use ISO 12687 - Humid sulfur test for metallic coatings?
The test method for porosity in metallic coatings by humid sulfur vapor ("Flower-of-Sulfur") was developed to test the porosity of metallic coatings over substrates and examine the susceptibility of articles to sulfur-based corrosion.
ISO 12687 specifies test techniques for detecting flaws and porosity in metallic coatings, as well as guidance on the specimen preparation, examination, and evaluation of the test.
Testing in compliance with ISO 12687 can determining the capability of the metallic coatings to provide the required corrosion, abrasion, and chemical resistance for the overall performance and durability of the metal substrate.
Thus, ISO 12687 can be particularly beneficial for quality control purposes to ensure your metallic coating materials are fit for its intended use.