1. Scope

1.1 This test method covers the determination of the temperature at which plastics and elastomers exhibit brittle failure under specified impact conditions. Two routine inspection and acceptance procedures are also provided.

Note 1When testing rubbers for impact brittleness use Test Methods D 2137.

1.2 The values stated in SI units are to be regarded as the standard.

1.3 Due to the potential safety and environmental hazards associated with mercury-filled thermometers, the use of alternative temperature measuring devices (such as thermocouples and RTDs) is encouraged.

1.4 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 and health practices and determine the applicability of regulatory limitations prior to use.

Note 2This test method and ISO 974 (E) are technically equivalent when using the Type B fixture and the Type III specimen, however, the minimum number of specimens that are required to be tested is significantly different when using this test method. The ISO method requires that a minimum of 100 specimens be tested.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D618 Practice for Conditioning Plastics for Testing

D832 Practice for Rubber Conditioning For Low Temperature Testing

D883 Terminology Relating to Plastics

D1790 Test Method for Brittleness Temperature of Plastic Sheeting by Impact

D2137 Test Methods for Rubber Property--Brittleness Point of Flexible Polymers and Coated Fabrics

E1 Specification for ASTM Liquid-in-Glass Thermometers

E77 Test Method for Inspection and Verification of Thermometers

E608/E608M Specification for Mineral-Insulated, Metal-Sheathed Base Metal Thermocouples

E1137/E1137M Specification for Industrial Platinum Resistance Thermometers

ISO Standard

Keywords

brittle failure; brittleness temperature; elastomer; impact plastics ;

ICS Code

ICS Number Code 83.060 (Rubber); 83.080.01 (Plastics in general)

DOI: 10.1520/D0746-07

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