ASTM E21-09 Elevated Temperature Tension Tests of Metallic Materials

ASTM E21-09 Elevated Temperature Tension Tests of Metallic Materials

The procedure and equipment for determining tensile and yield strength, elongation, and other properties are covered in ASTM E21-09 at increased temperatures. The values in inch-pound units is considered standard.


    Standard test methods for elevated temperature ASTM E21-09 are valuable tools for determining a metal’s capacity to sustain applied tensile forces. The elevated-temperature tension test is most beneficial in ensuring that the tested material is similar to the reference material.


    Force-measuring system, Extensometer, Thermocouples, Potentiometers, Micrometers, and melting points are used in standard methods of ASTM E21-09. 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.

    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 E21-09 guidelines.


    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 gage length = 4 diameters

    Reduction of area CV 

    CV %R = repeatability coefficient of variation in percent between laboratories.


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