The steel anvil is a specialized calibration device for concrete test hammer, this anvil is made of quality steel and tool steel, the fitting surface between anvil core and body is treated with fine grinding process, the anvil core surface hardness is HRC58-62.
Material made: quality steel and tool steel
Anvil core surface hardness:HRC58-62
Average calibration value for HT-225 Test hammer【N】=80 2
mortar average calibration value【N】=74 2
After 5000-8000 times operation, should rubdown the test surface, but the anvil core hardness should keep the same, otherwise it can't use again.
The anvil should be kept in dry and dust-proof place, must avoid any collision on the test surface.