This section of IEC 6021 6 outlines the calculation methods for deriving thermal endurance characteristics from experimental data collected in accordance with the guidelines of IEC 6021 6-1 and IEC 6021 6-2, utilizing fixed aging temperatures and varying aging durations. The experimental data can be obtained through non-destructive, destructive, or proof tests. It is important to note that data from non-destructive or proof tests may be incomplete, as the timing for reaching the endpoint may be cut off after the median time but before all specimens have reached that endpoint. The procedures are demonstrated through worked examples, and recommended computer programs are provided to aid in the calculations.
