ASTM D1709 PDF

More D Data obtained by one test method cannot be compared directly with the other test method nor with those obtained from tests employing different conditions of missile velocity, impinging surface diameter, effective specimen diameter, material construction and finish of the dart head, and film thickness. The values obtained by these test variables are highly dependent on the method of film fabrication. The confidence limits of data obtained by this procedure can, therefore, vary significantly, depending on the sample quality, uniformity of film gage, die marks, contaminants, etc. Hence, impact values cannot be normalized over a range of thickness without producing misleading data as to the actual impact resistance of the material. It is sometimes desirable to know the relationships among test results derived by different test methods.

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More D Scope 1. This test method can be used for films whose impact resistances require masses of about 50 g or less to about 6 kg to fracture them.

Its range of applicability is from about 0. By this technique, the missile weight employed during the test is decreased or increased by uniform increments after the testing of each specimen, depending upon the result fail or not fail observed for the specimen.

One missile weight is employed for each group and the missile weight is varied in uniform increments from group to group. The values stated in parentheses are for information only. It has been noted that certain materials may stretch so far as to bottom out at the base of certain test instruments without actually rupturing.

Subcommittee D 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.

Also, the ISO method does not allow the alternative testing technique described in Section 11 of this test method.

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ASTM D1709

More D Scope 1. This test method can be used for films whose impact resistances require masses of about 50 g or less to about 6 kg to fracture them. Its range of applicability is from about 0. By this technique, the missile weight employed during the test is decreased or increased by uniform increments after the testing of each specimen, depending upon the result fail or not fail observed for the specimen.

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