This part of GB/T 13465 specifies the test device, sample, test procedure and result calculation method used to measure the impact energy absorbed and impact strength of impermeable graphite materials. This section applies to the determination of absorbed energy and impact strength of impermeable graphite materials in a simply supported beam state.
GB/T 13465.4-2014 Referenced Document
GB/T 13465.1 Test method of impermeable graphite materials.Part 1:General of test method for mechanical properties