ASTM E21 Elevated Temperature Tension Tests of Metallic Materials

ASTM E21 Elevated Temperature Tension Tests of Metallic Materials

The procedure and equipment for determining the tensile strength, yield strength, elongation, and other properties of metallic materials are covered in ASTM E21 at increased temperatures. The values in inch-pound units are considered standard.

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    Scope:

    Standard test methods for elevated temperature described in ASTM E21 are valuable tools for determining a metal’s capacity to sustain applied tensile forces. The elevated temperature tensile test is most beneficial in ensuring that the tested material is similar to the reference material.

    Procedure:

    Force-measuring systems, extensometers, thermocouples, potentiometers, micrometers, and melting points are used in standard methods of ASTM E21. Cross-sectional area measurement determines the reduced section of the specimen’s minimum cross-sectional area and compares it with the minimum value to determine whether the requirements are satisfied.

    Video 01: Elevated temperature tensile testing (High temperature test)

    Specimen size:

    The length of the reduced section is less than 2in. (50 mm) and the nominal test temperature is 5°F (±3°C) according to ASTM E21 guidelines.

    Data

    The highest force applied during a fracture test is divided by the original minimum cross-sectional area of the decreased section of the specimen to get the tensile strength.

    Yield Strength offset = 0.2 %

    Elongation gauge length = 4 diameters

    Conclusion:

    Standard test methods for elevated temperature described in ASTM E21 are valuable tools for determining a metal’s capacity to sustain applied tensile forces.

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