All Leeb Hardness Test Reference Blocks are traceable to ASTM A956/ASTM A956M-17 and ISO 16859-2:2015. Order Leeb Hardness Test Blocks today to get the most out of your Leeb Hardness Tester, from a trusted UK supplier.

550 HLD (Equivalent to: 27 HRC, 277 HV10, 270 HBW
600 HLD (Equivalent to: 35 HRC, 339 HV10, 328 HBW
770 HLD (Equivalent to: 56 HRC, 625 HV10, 595 HBW)