Accuracy, stability and consistancy of Sun-Tec Hardness Standards results in reliable method of verifying your Hardness Tester. Manufactured in the USA and calibrated in the Sun-Tec standardization laboratory to NIST or ASTM specifications, Sun-Tec Hardness Standards help maintain and assure the accuracy of your Hardness Tester.
- Sun-Tec steel Ball Penetrators are used in the testing of unhardened steels. Available in 1/16", 1/8", 1/4" and 1/2" diameter.
Available in sizes of 1/16", 1/8", 1/4", 1/2" diameters. Replacement balls also available.
- Sun-Tec Diamond Penetrators are used for the testing of hardened steels. They are precision ground and lapped to a high dimensional and geometric tolerances, these penetrators give dependable, precise accuracy.
Penetrators are available for "C", "N", "C" & "N" and "A" scales.