ASTM E2769 - 18

    Standard Test Method for Elastic Modulus by Thermomechanical Analysis Using Three-Point Bending and Controlled Rate of Loading

    Active Standard ASTM E2769 | Developed by Subcommittee: E37.10

    Book of Standards Volume: 14.05

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    Significance and Use

    5.1 This test method provides a means of characterizing the mechanical behavior of materials using very small amounts of material.

    5.2 The data obtained may be used for quality control, research and development and establishment of optimum processing conditions. The data are not intended for use in design or predicting performance.

    Note 2: This test method may not be suitable for anisotropic materials.

    1. Scope

    1.1 This test method describes the use of linear controlled-rate-of-loading in three-point bending to determine the elastic modulus of isotropic specimens in the form of rectangular bars using a thermomechanical analyzer (TMA).

    Note 1: This method is intended to provide results similar to those of Test Methods D790 or D5934 but is performed on a thermomechanical analyzer using smaller test specimens. Until the user demonstrates equivalence, the results of this method shall be considered independent and unrelated to those of Test Methods D790 or D5934.

    1.2 This test method provides a means for determining the elastic modulus within the linear region of the stress-strain curves (see Fig. 1). This test is conducted under isothermal temperature conditions from –100 °C to 300 °C.

    FIG. 1 Stress-Strain Curve (Linear Region)

    Stress-Strain Curve (Linear Region)Stress-Strain Curve (Linear Region)

    1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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

    1.5 This 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.

    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

    D790 Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials

    D5934 Test Method for Determination of Modulus of Elasticity for Rigid and Semi-Rigid Plastic Specimens by Controlled Rate of Loading Using Three-Point Bending

    E473 Terminology Relating to Thermal Analysis and Rheology

    E1142 Terminology Relating to Thermophysical Properties

    E1363 Test Method for Temperature Calibration of Thermomechanical Analyzers

    E2113 Test Method for Length Change Calibration of Thermomechanical Analyzers

    E2206 Test Method for Force Calibration of Thermomechanical Analyzers

    ICS Code

    ICS Number Code 29.035.20 (Plastic and rubber insulating materials)

    UNSPSC Code

    UNSPSC Code

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/E2769-18

    Citation Format

    ASTM E2769-18, Standard Test Method for Elastic Modulus by Thermomechanical Analysis Using Three-Point Bending and Controlled Rate of Loading, ASTM International, West Conshohocken, PA, 2018,

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