UNI 7481-1975
Machinery for hardness testing. Rockwell hardness (Grade C and Grade B). Adjustment of metal reference block

Standard No.

UNI 7481-1975

Release Date

1975

Published By

IT-UNI

Status

Withdraw

Latest

UNI 7481-1975

Scope

This standard concerns the calibration of metal reference blocks intended for the indirect verification of Rockwell hardness testing machines (C and B scales) referred to in UNI 7477-75. It does not necessarily have to be applied for the calibration of the test blocks used by the user for current checks of the machine.

UNI 7481-1975 history

• 1975 UNI 7481-1975 Machinery for hardness testing. Rockwell hardness (Grade C and Grade B). Adjustment of metal reference block