ASTM E18-24 pdf download,Standard Test Methods for Rockwell Hardness of Metallic Materials. The current suite of test methods is designed to assess the Rockwell hardness and Rockwell superficial hardness of metallic substances through the Rockwell indentation hardness technique. The standard delineates the necessary criteria for Rockwell hardness testing equipment and outlines the protocols for executing Rockwell hardness assessments. The method encompasses details for the utilization of handheld Rockwell hardness testing devices, which employ the Rockwell hardness testing principle and are capable of satisfying all the stipulations of this method, including both direct and indirect validations of the testing equipment. Handheld...