Brinell Test Block 60 to 140 (Specify Hardness No.)

Brinell Test Block. Brinell Test Blocks are made of only the highest quality steel and aluminum. The impressions in the test bars are made with a Brinell machine with an accuracy maintained by a proving ring traceable to the National Institute of Standards and Technology (NIST). Before Test Blocks are certified, impressions are double-checked with an electronic microscope accurate to .01mm. Each Test Block exceeds all ASTM-E10 Standards to provide the highest degree of accuracy.