the temperature in degrees Celsius at which a standard test bar (ASTM D648) deflects 0.010 in under a stated load of either 66 or 264 psi, when the temperature is raised at a specific rate of increase. power dissipated as heat.
The temperature at which a standard test bar (ASTM D68) deflects 0.10 in. under a stated load of either 66 or 264 p.s.i.
The temperature at which a standard test bar deflects a specified amount under a stated load. Now called deflection temperature.