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1.1 This test method describes a procedure for measuring the hardness of rubber. The hardness is obtained by the difference in penetration depth of a specified dimension ball under two conditions of contact with the rubber: (1 ) with a small initial force and (2 ) with a much larger final force. The differential penetration is taken at a specified time and converted to a hardness scale value.
1.2 This test method is identical in substance with ISO48.
1.3 This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D1349 Practice for Rubber--Standard Conditions for Testing
D2240 Test Method for Rubber PropertyDurometer Hardness
D4483 Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
International StandardISO 48 Rubber, Vulcanized or ThermoplasticDetermination of Hardness (Hardness between 10 and 100 IRHD)
ICS Number Code 83.060 (Rubber)
UNSPSC Code 13100000(Rubber and elastomers)
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ASTM D1415-88(1999), Standard Test Method for Rubber Property-International Hardness, ASTM International, West Conshohocken, PA, 1999, www.astm.orgBack to Top