ASTM D2240, 2015 Edition – Standard Test Method for Rubber Property—Durometer Hardness

This test method covers twelve types of rubber hardness measurement devices known as durometers: Types A, B, C, D, DO, E, M, O, OO, OOO, OOO-S, and R. The procedure for determining indentation hardness of substances classified as thermoplastic elastomers, vulcanized (thermoset) rubber, elastomeric materials, cellular materials, gel-like materials, and some plastics is also described.

This test method is not equivalent to other indentation hardness methods and instrument types, specifically those described in Test Method ASTM D1415.

This test method is not applicable to the testing of coated fabrics.

All materials, instruments, or equipment used for the determination of mass, force, or dimension shall have traceability to the National Institute for Standards and Technology, or other internationally recognized organizations parallel in nature.

The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. Many of the stated dimensions in SI are direct conversions from the U. S. Customary System to accommodate the instrumentation, practices, and procedures that existed prior to the Metric Conversion Act of 1975.

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

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Product Information:

Revision	2015 Edition
Document Type	PDF
Document Language	English
Pages	13
Publisher	ASTM International (ASTM)
Status	Current

ASTM Volume

09.01: Rubber, Natural And Synthetic — General Test Methods; Carbon Black

Volume 09.01 contains tests and practices for evaluating rubber, rubber-like materials, carbon black, and recovered carbon black (rCB). Some general tests and practices fix standard procedures for performing chemical analysis, assessing processability, physical properties, aging and weathering effects, low temperature effects, and adhesion. Others evaluate compounding materials, carbon black, and synthetic rubbers, such as CR, IIR, IR, NBR, BR, and SBR. This volume also details standards on natural rubber, thermoplastic elastomers, and terminology.