SOFTENING POINT CUBE-IN-AIR METHOD: ASTM D2319
TEST SUMMARY
This test method covers the determination of softening point above 176° F (80° C). Test Method ASTM D3104 gives comparable results.
Two cubes of pitch, supported on wire hooks, are heated in a standardized air oven at a linear rate. The softening point is the mean of the temperatures at which the cubes sag downwards a distance of 60 mm.
TEST PRECISION
Repeatability: 2 ° F (1.0° C)
Reproducibility: 7.2° F (4.0° C)
This test method has no bias.
