ISO 6508-2:2023
Metallic materials — Rockwell hardness test — Part 2: Verification and calibration of testing machines and indenters

Standard No.

ISO 6508-2:2023

Release Date

2023

Published By

Standard Association of Australia （SAA）

Latest

ISO 6508-2:2023

Scope

This document specifies two separate methods of verification of testing machines (direct and indirect) for determining Rockwell hardness in accordance with ISO 6508-1, together with a method for verifying Rockwell hardness indenters.

The direct verification method is used to determine whether the main parameters associated with the machine function, such as applied force, depth measurement, and testing cycle timing, fall within specified tolerances. The indirect verification method uses a number of calibrated reference hardness blocks to determine how well the machine can measure a material of known hardness.

This document is applicable to stationary and portable hardness testing machines.

Attention is drawn to the fact that the use of tungsten carbide composite for ball indenters is considered to be the standard type of Rockwell indenter ball.

ISO 6508-2:2023 history

• 2023 ISO 6508-2:2023 Metallic materials — Rockwell hardness test — Part 2: Verification and calibration of testing machines and indenters
• 2022 ISO 6508-2:2022 Metallic materials — Rockwell hardness test — Part 2: Verification and calibration of testing machines and indenters
• 2015 ISO 6508-2:2015 Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing machines and indenters
• 2005 ISO 6508-2:2005 Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing machines (scales A, B, C, D, E, F, G, H, K, N, T)
• 1999 ISO 6508-2:1999 Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing machines (scales A, B, C, D, E, F, G, H, K, N, T)