Comparison and Evaluation the Evenness Degree of Vickers Hardness Test Blocks of China and USA

Evenness degree of the Vickers hardness test blocks of China and USA were compared and evaluated by the hardness measured results and analyzed data. The results show that the evenness degree of Chinese Vickers hardness test block (500 g) was better than that of American Vickers hardness test block (500 g). Vickers hardness test block of China absolutely measured up to the American standard.