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  • ASTM D 790 : 2017

    Current The latest, up-to-date edition.

    Standard Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-07-2017

    Publisher:  American Society for Testing and Materials

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    Abstract - (Show below) - (Hide below)

    These test methods are used to determine the flexural properties of unreinforced and reinforced plastics, including high modulus composites and electrical insulating materials utilizing a three-point loading system to apply a load to a simply supported beam (specimen).

    Scope - (Show below) - (Hide below)

    1.1These test methods are used to determine the flexural properties of unreinforced and reinforced plastics, including high modulus composites and electrical insulating materials utilizing a three-point loading system to apply a load to a simply supported beam (specimen). The method is generally applicable to both rigid and semi-rigid materials, but flexural strength cannot be determined for those materials that do not break or yield in the outer surface of the test specimen within the 5.0 % strain limit.

    1.2Test specimens of rectangular cross section are injection molded or, cut from molded or extruded sheets or plates, or cut from molded or extruded shapes. Specimens must be solid and uniformly rectangular. The specimen rests on two supports and is loaded by means of a loading nose midway between the supports.

    1.3Measure deflection in one of two ways; using crosshead position or a deflectometer. Please note that studies have shown that deflection data obtained with a deflectometer will differ from data obtained using crosshead position. The method of deflection measurement shall be reported.

    Note 1:Requirements for quality control in production environments are usually met by measuring deflection using crosshead position. However, more accurate measurement may be obtained by using an deflection indicator such as a deflectometer.

    Note 2:Materials that do not rupture by the maximum strain allowed under this test method may be more suited to a 4-point bend test. The basic difference between the two test methods is in the location of the maximum bending moment and maximum axial fiber stresses. The maximum axial fiber stresses occur on a line under the loading nose in 3-point bending and over the area between the loading noses in 4-point bending. A four-point loading system method can be found in Test Method D6272.

    1.4The values stated in SI units are to be regarded as the standard. The values provided in parentheses are for information only.

    1.5The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.

    1.6This 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 3:This standard and ISO 178 address the same subject matter, but differ in technical content.

    1.7This 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.

    General Product Information - (Show below) - (Hide below)

    Committee D 20
    Document Type Test Method
    Publisher American Society for Testing and Materials
    Status Current
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    ACI SPEC-548.10:2022 Type Methyl Methacrylate Slurry (MMS) Polymer Overlays for Bridge and Parking Garage Deck— Specification

    Standards Referencing This Book - (Show below) - (Hide below)

    ASTM D 883 : 2023 Standard Terminology Relating to Plastics
    ASTM D 4101 : 2001 : REV A Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 4101 : 2001 Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 4101 : 2006 : REV B Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 4101 : 2005 Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 5947 : 1996 Standard Test Methods for Physical Dimensions of Solid Plastics Specimens
    ASTM D 4101 : 2000 Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM E 83 : 2023 Standard Practice for Verification and Classification of Extensometer Systems
    ASTM D 4000 : 2013 Standard Classification System for Specifying Plastic Materials
    ASTM D 4101 : 2008 Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 4101 : 2006 Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 4101 : 2004 Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 6272 : 2010 Standard Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials by Four-Point Bending
    ASTM E 83 : 2000 : EDT 1 Standard Practice for Verification and Classification of Extensometer
    ASTM D 4101 : 2014 : EDT 2 Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 4000 : 2003 : REV A Standard Classification System for Specifying Plastic Materials
    ASTM D 4000 : 2000 : REV A Standard Classification System for Specifying Plastic Materials
    ASTM D 5947 : 2002 Standard Test Methods for Physical Dimensions of Solid Plastics Specimens
    ASTM D 4101 : 2010 Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 4101 : 2011 Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 883 : 2024 Standard Terminology Relating to Plastics
    ASTM D 4000 : 2012 Standard Classification System for Specifying Plastic Materials
    ASTM E 83 : 2016 Standard Practice for Verification and Classification of Extensometer Systems
    ASTM D 4000 : 2009 Standard Classification System for Specifying Plastic Materials
    ASTM D 4101 : 2005 : REV A Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM E 83 : 1998 : EDT 1 Standard Practice for Verification and Classification of Extensometer
    ASTM D 4101 : 2007 Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 4101 : 2002 : REV A Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 4000 : 2011 Standard Classification System for Specifying Plastic Materials
    ASTM D 883 : 2022 Standard Terminology Relating to Plastics
    ASTM D 883 : 2020 : REV B Standard Terminology Relating to Plastics
    ASTM D 5947 : 2011 Standard Test Methods for Physical Dimensions of Solid Plastics Specimens
    ASTM D 4101 : 2003 : REV B Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 5947 : 2018 Standard Test Methods for Physical Dimensions of Solid Plastics Specimens
    ASTM E 691 : 2020 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
    ASTM D 4101 : 2002 : REV B Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 4000 : 2004 : EDT 1 Standard Classification System for Specifying Plastic Materials
    ASTM D 4101 : 2009 Standard Specification for Polypropylene Injection and Extrusion Materials
    AS ISO/ASTM 52910:2020 Additive manufacturing - Design - Requirements, guidelines and recommendations
    ASTM D 6272 : 2017 : EDT 1 Standard Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials by Four-Point Bending
    ASTM D 4000 : 2023 Standard Classification System for Specifying Plastic Materials
    ASTM D 4101 : 2006 : REV A Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM E 691 : 2019 : EDT 1 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
    ASTM E 691 : 2023 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
    ASTM D 4000 : 2009 : REV B Standard Classification System for Specifying Plastic Materials
    ASTM D 4000 : 2000 Standard Classification System for Specifying Plastic Materials
    ASTM D 5947 : 2006 Standard Test Methods for Physical Dimensions of Solid Plastics Specimens
    ASTM D 4000 : 2010 : REV A Standard Classification System for Specifying Plastic Materials
    ASTM D 4101 : 2004 : REV A Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 4101 : 1982 : R1988 : EDT 1 Standard Specification for Propylene Plastic Injection and Extrusion Materials
    ASTM D 4101 : 2017 Standard Classification System and Basis for Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 4000 : 2007 Standard Classification System for Specifying Plastic Materials
    ASTM D 4000 : 2009 : REV A Standard Classification System for Specifying Plastic Materials
    ASTM E 691 : 2022 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
    ASTM D 4000 : 2001 Standard Classification System for Specifying Plastic Materials
    ASTM D 4101 : 2014 Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM E 691 : 2009 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
    ASTM D 4000 : 2008 Standard Classification System for Specifying Plastic Materials
    ASTM D 638 : 2014 Standard Test Method for Tensile Properties of Plastics
    ASTM D 6272 : 2017 Standard Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials by Four-Point Bending
    ASTM D 4101 : 2010 : REV A Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 6272 : 2002 Standard Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials by Four-Point Bending
    ASTM D 6272 : 2002 : R2008 : EDT 1 Standard Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials by Four-Point Bending
    ASTM D 618 : 2013 Standard Practice for Conditioning Plastics for Testing
    ASTM E 4 : 2021 Standard Practices for Force Calibration and Verification of Testing Machines
    ASTM E 691 : 2021 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
    ASTM D 5947 : 2003 Standard Test Methods for Physical Dimensions of Solid Plastics Specimens
    ASTM D 4101 : 2024 Standard Classification System and Basis for Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 4000 : 2001 : REV A : EDT 1 Standard Classification System for Specifying Plastic Materials
    ASTM D 5947 : 2001 : EDT 1 Standard Test Methods for Physical Dimensions of Solid Plastics Specimens
    ASTM E 2309 : 2005 Standard Practices for Verification of Displacement Measuring Systems and Devices Used in Material Testing Machines
    ASTM D 4101 : 2003 Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 4000 : 2004 Standard Classification System for Specifying Plastic Materials
    ASTM D 4101 : 2003 : REV A Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 4000 : 2010 Standard Classification System for Specifying Plastic Materials
    ASTM D 4101 : 2002 Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 6272 : 2000 Standard Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials by Four-Point Bending
    ASTM D 4101 : 2017 : EDT 1 Standard Classification System and Basis for Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 4000 : 2003 Standard Classification System for Specifying Plastic Materials
    ASTM D 4101 : 2014 : EDT 1 Standard Specification for Polypropylene Injection and Extrusion Materials
    ASTM D 4000 : 2020 Standard Classification System for Specifying Plastic Materials
    ASTM D 618 : 2021 Standard Practice for Conditioning Plastics for Testing
    ASTM D 638 : 2022 Standard Test Method for Tensile Properties of Plastics
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