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Drop Impact Resistance - ASTM D4226

The energy required for 50% of tested specimens to fail by dropping an 8 lb weight onto an impactor resting on the specimen.

Testing Procedures
Procedure Description
A Used to determine the minimum energy required to cause failure of test specimen.
B Used to determine the minimum energy required to cause brittle failure.
Impactors
Impactor Configuration Description Diagram
C.125 Conical impactor with 0.125 in radius and 20° cone angle.
H.25 Hemispherical impactor with 0.25 in radius.