The basic approach used to determine properties over the temperature range from -40 to 120°C is as follows. Ideally, specimens from a single plaque are tested at various temperatures (multiple tests at each temperature). From these, correlations are developed that describe the variation of each property with temperature. Finally, these correlations are used to calculate factors by which room-temperature properties can be multiplied to yield estimates of the properties at.other temperatures. This approach avoids the otherwise large testing effort that would be required to generate overall average properties and plaque- specific properties over the temperature range of interest. The factors can be used with the room- temperature averages in Table 3.1 to estimate overall average properties, and they can be used with the plaque-average room-temperature tensile properties in Table 3.2 to estimate the properties of a specific
plaque at another temperature.