ASTM D746
Standard Test Method for Brittleness Temperature of Plastics and Elastomers by Impact


ASTM D746 establishes the test method for determining the brittleness temperature of elastomers and plastics at low temperatures. The standard identifies the temperature threshold at which materials become brittle and prone to fracture under mechanical stress in cold conditions. The test involves progressive cooling of samples combined with standardized impact applications to pinpoint the brittleness transition point. Applicable to rubbers, elastomers, and plastic materials, this method is essential for evaluating material performance in low-temperature environments and ensuring safety in demanding industrial applications.


ASTM D746 standard webpage
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