Effect of different total test force holding time on Rockwell hardness test results of aluminum alloy

The Rockwell hardness test of several brands of aluminum alloy materials was carried out when the total test force holding time was 2, 3, 5, 6, 9 s, and the test data were statistically analyzed. The results show that under the condition of different total test force holding time, the Rockwell hardness of aluminum alloy material was 0. 3-1. 0 HRB, which was basically decreasing. The results could provide a reliable basis for the data processing of aluminum alloy condition inspection in the production site.