This part of ISO 6508 specifies a method for the calibration of reference blocks to be used for the indirect verification of Rockwell hardness testing machines (scales A, B, C, D, E, F, G, H, K, N, T), as specified in ISO 6508-2.
SANS 6508-3:2003 history
0000 SANS 6508-3-2009
2003SANS 6508-3:2003 Metallic materials - Rockwell hardness test Part 3: Calibration of reference blocks (scales A,B,C,D,E,F,G,H,K,N,T)