ASTM D5420-04

    Standard Test Method for Impact Resistance of Flat, Rigid Plastic Specimen by Means of a Striker Impacted by a Falling Weight (Gardner Impact)


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    1. Scope

    1.1 This test method covers the determination of the relative ranking of materials according to the energy required to crack or break flat, rigid plastic specimens under various specified conditions of impact of a striker impacted by a falling weight.

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

    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.

    Note 1—There is no similar or equivalent ISO standard.


    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

    D883 Terminology Relating to Plastics

    D1600 Terminology for Abbreviated Terms Relating to Plastics

    D2794 Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact)

    D3763 Test Method for High Speed Puncture Properties of Plastics Using Load and Displacement Sensors

    D4066 Classification System for Nylon Injection and Extrusion Materials (PA)

    D4226 Test Methods for Impact Resistance of Rigid Poly(Vinyl Chloride) (PVC) Building Products

    D5628 Test Method for Impact Resistance of Flat, Rigid Plastic Specimens by Means of a Falling Dart (Tup or Falling Mass)

    D5947 Test Methods for Physical Dimensions of Solid Plastics Specimens

    E171 Practice for Conditioning and Testing Flexible Barrier Packaging

    E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method


    ICS Code

    ICS Number Code 83.140.10 (Films and sheets)

    UNSPSC Code

    UNSPSC Code 13100000(Rubber and elastomers)


    Referencing This Standard

    DOI: 10.1520/D5420-04

    ASTM International is a member of CrossRef.


    Citation Format

    ASTM D5420-04, Standard Test Method for Impact Resistance of Flat, Rigid Plastic Specimen by Means of a Striker Impacted by a Falling Weight (Gardner Impact), ASTM International, West Conshohocken, PA, 2004, www.astm.org

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