NG-RockGen Rockwell Hardness tester is ASTM E18 standard. ASTM E18 is the industry standard for Rockwell hardness testing of metallic materials. This specification includes both theory and standard practice statements. For those companies Nadcap accredited in heat treat where the AC7102/5 for hardness and conductivity testing is included, an additional layer of requirements come into play. ASTM E18 lists three types of verification testing: direct verification, indirect verification, and daily verification.

Direct verification is performed when the machine is purchased new from the manufacturer, when the indirect test fails, or when any adjustments, modifications or repairs have been made to the machine that could affect any testing variables. Indirect verification is performed annually, when a new machine is received and installed, or when a machine is moved. Daily verification is performed each day prior to using the hardness tester, when the anvil, test force, or indenter is changed. To obtain your personal quote, or if you have any questions, click here.