ASTM D621

Deformation Under Load

Purpose: This test method is used to determine the deformation of plastic materials under a specified load, temperature, and time.

Sample: 0.5 x 0.5 x 0.5 inches

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Basic Description: The test specimens are loaded into the machine at a specified load and temperature, the initial height is then measured. After a specified time, the final height is measured and the deformation under load is then calculated.

Method Publisher: https://www.astm.org/d0621-64r88e01.html

Keywords:

• Deformation under load (DUL)
• Compressive creep

Related Test Methods:

• ASTM D638 – Tensile strength and elongation
• ASTM D790 – Flexural strength and modulus
• ASTM D2990 – Compressive creep