Name: ASTM D 4812 : 2019
Brand: ASTM
Price: 135.86 AUD

ASTM D 4812 : 2019

Superseded

View Superseded by

Standard Test Method for Unnotched Cantilever Beam Impact Resistance of Plastics

Available format(s)

Hardcopy , PDF

Superseded date

17-06-2022

Language(s)

English

Published date

16-10-2019

Publisher

American Society for Testing and Materials

1.1This 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 5), and other differences in machine design).

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

1.3This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

Note 2:This standard and ISO 180, Method U address the same subject matter, but differ in technical content.

1.4This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Committee	D 20
DocumentType	Test Method
Pages	12
PublisherName	American Society for Testing and Materials
Status	Superseded
SupersededBy	ASTM D 4812 : 2019 : EDT 1
Supersedes	ASTM D 4812 : 2011

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ASTM E 691 : 2009	Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
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ASTM D 618 : 2013	Standard Practice for Conditioning Plastics for Testing
ASTM E 691 : 2021	Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ASTM D 5947 : 2001 : EDT 1	Standard Test Methods for Physical Dimensions of Solid Plastics Specimens
ASTM E 2935 : 2021	Standard Practice for Evaluating Equivalence of Two Testing Processes
ASTM E 456 : 2013 : REV A : R2017 : EDT 4	Standard Terminology Relating to Quality and Statistics
ASTM E 456 : 2013 : REV A : R2017 : EDT 6	Standard Terminology Relating to Quality and Statistics
ASTM D 618 : 2021	Standard Practice for Conditioning Plastics for Testing