ASTM E21 Elevated-Temperature Tensile Testing of Metallic Materials

ASTM E21 · ASTM standard

ASTM E21 is the test method for tension testing of metallic materials at elevated temperature. It adds temperature control and thermal soak requirements on top of a standard tensile test. To set up elevated-temperature testing, talk with our team.

What ASTM E21 Covers

The method applies when tensile properties are needed above room temperature, such as for high-temperature alloys and components. It defines how the specimen is heated, held at temperature, and pulled while temperature is maintained within tolerance.

Reading the Designation

Cited with a year suffix such as ASTM E21-YY. Confirm the edition and the required temperatures.

Temperature Control and Soak

Accurate, uniform specimen temperature is the defining requirement. The specimen is brought to the target temperature, held for a defined soak so it is uniform through the section, and kept within a tight band throughout the test. Thermocouples on the gauge section monitor uniformity.

Properties Reported

Results include yield strength, tensile strength, and elongation at the test temperature, used for high-temperature design and qualification. High-temperature extensometry is required to capture strain.