The CCSi ASTM D1329 (63mm) Specimen Cutting Die is a non-standard length built for labs whose Temperature Retraction (TR) test setup needs a longer strip than the three lengths ASTM D1329 specifies (25, 38, and 51 mm). This is a low-temperature viscoelasticity test — not a thermal-conductivity or insulation test — measuring how a stretched, frozen rubber specimen retracts as temperature climbs at a steady rate.
Because 63 mm falls outside the standard’s specified range, this die is typically ordered when a lab’s specimen rack or fixture geometry doesn’t accommodate any of the three standard lengths. The end tabs and general strip profile follow the same design as the standard dies; only the working length differs.
TR10 and TR70 remain the reference points that matter most, correlating with brittleness point and low-temperature compression set respectively, with the gap between them widening as crystallization increases in the compound.
Manufactured in-house from American tool steel, wire-EDM finished for resharpenable service. If your setup fits one of the three standard lengths instead, see the 25 mm, 38 mm, or 51 mm die.
$885.00
specimen dies, ASTM D1329 Specimen Cutting Dies, TR, TR test, cutting dies, Standard Test Method for Evaluating Rubber Property—Retraction at Lower Temperatures (TR Test), D1329, ASTM D1329, subnormal temperature, low temperature, temperature retraction, brittleness, brittleness point, cold test.