Deflection Temperature Under Load (DTUL) - ASTM D648 Plastic Test Standard
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Property information for specific grades of resin are available in the Prospector Plastics Database. Property Search let's you search for plastics by more than 400 material properties. Deflection Temperature Under Load (DTUL) - ASTM D648The temperature at which a test specimen deflects 0.25 mm when loaded in 3-point bending at a specified maximum outer fiber stress. Deflection temperature is used to determine short-term heat resistance. 
A test specimen is loaded in 3-point bending in the edgewise direction. Outer fiber stresses used for testing are 0.455 MPa (66 psi) and 1.82 MPa (264 psi). The temperature is increased at 2°C/min until the specimen deflects 0.25 mm (0.010 in). Similar StandardsProperty information for specific grades of resin are available in the Prospector Plastics Database. |
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