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Heat Deflection Temperature, also referred to as DTUL (Deflection Temperature Under Load), can be tested at any of the conditions called out in ASTM D648. This is a useful test for verifying a supplier’s stated DTUL, comparing materials when DTUL values are not available, or for helping to identify an unknown material.

Heat Deflection Temperature

Heat Deflection Temperature

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This page was last updated on 1/23/2014.