ASTM D518-99
Standard Test Method for Rubber Deterioration-Surface Cracking

Standard No.

ASTM D518-99

Release Date

1999

Published By

American Society for Testing and Materials (ASTM)

Status

Withdraw 2008-01

Latest

ASTM D518-99

Replace By

D1149

Scope

In the development of rubber compounds for use in applications where ozone cracking is objectionable, it is necessary to have a test in which simple comparative performance for resistance to cracking can be evaluated. This test method can be used for this performance comparison.

This test method is not suited for use in purchase specifications, not only because correlation with service life is uncertain, but because the results from duplicate specimens tested in different locations do not ordinarily give the same values. No exact relation between the results of the test and actual service performance is given or implied. The test is principally of value when used for comparisons between two or more rubber compounds.

METHOD A—EXPOSURE OF STRAIGHT SPECIMENS

Top

1.1 This test method covers three test specimen procedures that estimate the comparative ability of rubber compounds to withstand the effects of normal weathering, or exposure in an atmosphere containing controlled amounts of ozone. It does not apply to testing of electrical insulation or other rubber parts where high concentrations of ozone prevail due to electrical discharge, nor to testing of material ordinarily classified as hard rubber.

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

1.3 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.

ASTM D518-99 Referenced Document

• ASTM D1149 Standard Test Method for Rubber Deterioration-Surface Ozone Cracking in a Chamber
• ASTM D4575 Standard Test Methods for Rubber Deterioration8212;Reference and Alternative Method(s) for Determining Ozone Level in Laboratory Test Chambers

ASTM D518-99 history

• 1999 ASTM D518-99 Standard Test Method for Rubber Deterioration-Surface Cracking