DIN EN ISO 6508-2 Beiblatt 1:1999-10
Отменен
Metallic materials - Rockwell hardness test (scales A, B, C, D, E, F, G, H, K, N, T) - Part 2: Verification and calibration of the hardness testing machines; recommendations according to the verification and for the design of the testing machine and the plunger
— 3 стр.
