Објављен
ISO 4545-2:2017 specifies the method of verification and calibration of testing machines for determining Knoop hardness for metallic materials in accordance with ISO 4545‑1.
A direct method of verification and calibration is specified for the testing machine, indenter, and the diagonal length measuring system. An indirect verification method using reference blocks is specified for the overall checking of the machine.
If a testing machine is also to be used for other methods of hardness testing, it will be verified independently for each method.
ПОВУЧЕН
ISO 4545-2:2005
ОБЈАВЉЕН
ISO 4545-2:2017
90.93
Одлука о потврђивању стандарда
2. 10. 2023.
ПРОЈЕКАТ
ISO/PWI 4545-2
Metalni materijali – Ispitivanje tvrdoće po Knupu – Deo 2: Verifikacija i kalibracija uređaja za ispitivanje
60.60 Стандард објављен