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ASTM D2370
ASTM D2370
ASTM D2370 is a test method to determine tensile properties of organic coatings. During application and later use, variations in dimensions and stresses are often imposed on organic coatings, which are either paints, varnishes, lacquers, or other protective films. The standard provides a method for determining significant tensile properties such as tensile strength, elongation, and stress at break. ASTM D2370 is helpful in determining the performance of coating materials during controlled tensile tests, revealing their reaction to applied forces, which can lead to cracking, tearing, and failure. These factors are evident in free coating films, and the test is widely used to evaluate the flexibility and durability of such films.
Significance
The ASTM D2370 tests are important for coatings development and quality control, as the tensile properties of the coating will relate to the performance of the product. During use, coatings applied to surfaces can be subjected to stresses such as expansion/contraction, vibration, bending, and the environment. If it's not flexible enough, it can crack and become useless from being moved. Standardized tensile tests enable manufacturers to assess raw material and product consistency as well as compare formulations. ASTM D2370 provides data for the selection of coating systems for use in demanding applications as well as research, product development, and quality assurance efforts. Scope ASTM D2370 relates to the determination of the tensile properties of free films of organic coatings by use of a controlled tensile testing procedure. The standard covers methods for the determination of the tensile strength, elongation, and mechanically related properties of coating materials. For coating producer companies, research institutes, test houses, material suppliers, and quality assurance departments that are concerned with the development and testing of organic coating products.