ASTM D2240 Standard Test Method for Rubber Property - Standard Test for Durometer Hardness

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of ASTM D2240 testing. The ASTM D2240 test identifies eight types of rubber hardness testers known as durometers. Types A, B, C, D, DO, O, OO and M. The procedure for determining the indentation hardness of substances classified as thermoplastic elastomers, vulcanized (thermoset) rubber, elastomeric materials, cellular materials and some plastics is also described.

This test method is not equivalent to other indentation hardness methods and tool types, particularly those described in Test Method D 1415. This test method is not applicable for testing coated fabrics.

ASTM D2240 Typical Test Parameters:

• Initial hardness or time-dependent hardness: Usually initial
• Sample shape: Flat and homogeneous (no texture)
• Durometer scale to use: The most popular durometer scales are “A” and “D”. Combined, these two scales cover a hardness range from rubber to nylon.
• Number of samples per item: 1 sample, 5 readings
• Sample dimensions: 2” X 2” or more, minimum 6,4 mm (0,25 inch) thick
• Conditioning and testing Temperature: 23 ± 2 °C
• Conditioning and relative humidity testing: 50% ± 5%

Values ​​stated in SI units should be accepted as standard. Values ​​in parentheses are for informational purposes only. Many of the dimensions specified in the SI are direct conversions from the U.S. Traditional System to accommodate the instrumentation, practices, and procedures that existed before the 1975 Metric Conversion Act.

This standard does not purport to address all, if any, safety concerns associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory restrictions prior to use.

EUROLAB assists manufacturers with ASTM D2240 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.