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ASTM International - ASTM D4812-06

Standard Test Method for Unnotched Cantilever Beam Impact Resistance of Plastics

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Organization: ASTM International
Publication Date: 15 March 2006
Status: inactive
Page Count: 12
ICS Code (Other rubber and plastics products): 83.140.99
scope:

1.1 This test method covers the determination of the resistance of plastics to breakage by flexural shock, as indicated by the energy extracted from standardized pendulum-type hammers, mounted in standardized machines, in breaking standard specimens with one pendulum swing. The result of this test method is reported as energy absorbed per unit of specimen width.

Note 1

The pendulum-type test instruments have been standardized in that they must comply with certain requirements, including a fixed height of hammer fall that results in a substantially fixed velocity of the hammer at the moment of impact. Pendulums of different initial energies (produced by varying their effective weights) are recommended for use with specimens of different impact strengths. Moreover, manufacturers of the equipment are permitted to use different lengths and constructions of pendulums (with resulting possible differences in pendulum rigidities (see Section ), and other differences in machine design).

1.2 The values stated in SI units are to be regarded as standard. The values given in brackets are for information only.

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 2

This standard and ISO 180, Method 1U, are similar in content but are not technically equivalent.

Document History

October 1, 2019
Standard Test Method for Unnotched Cantilever Beam Impact Resistance of Plastics
5.1 The pendulum-impact test indicates the energy to break standard test specimens of specified size under stipulated conditions of specimen mounting and pendulum velocity at impact. 5.2 The energy...
December 1, 2011
Standard Test Method for Unnotched Cantilever Beam Impact Resistance of Plastics
The pendulum-impact test indicates the energy to break standard test specimens of specified size under stipulated conditions of specimen mounting and pendulum velocity at impact. The energy lost by...
ASTM D4812-06
March 15, 2006
Standard Test Method for Unnotched Cantilever Beam Impact Resistance of Plastics
1.1 This test method covers the determination of the resistance of plastics to breakage by flexural shock, as indicated by the energy extracted from standardized pendulum-type hammers, mounted in...
November 1, 2005
Standard Test Method for Unnotched Cantilever Beam Impact Strength of Plastics
1.1 This test method covers the determination of the resistance of plastics to breakage by flexural shock, as indicated by the energy extracted from standardized pendulum-type hammers, mounted in...
March 10, 1999
Standard Test Method for Unnotched Cantilever Beam Impact Strength of Plastics
1.1 This test method covers the determination of the resistance to breakage by flexural shock of plastics, as indicated by the energy extracted from standardized (Note 1) pendulum-type hammers,...
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