ISO 6506-2 – Brinell Hardness: Verification and Calibration of Testing Machines

  1. Home
  2. Testing By Standards
  3. ISO 6506-2

ISO 6506-2 is the ISO standard that sets out direct and indirect verification of testing machines used to determine Brinell hardness in accordance with ISO 6506-1. It also states when each of the two types of verification has to be carried out. The current edition is ISO 6506-2:2017, and ISO lists it as due for revision.

Direct verification checks that individual machine performance parameters fall within specified limits. Indirect verification uses hardness measurements on reference blocks calibrated to ISO 6506-3 to check the overall performance of the machine. The standard applies to fixed-location and portable machines, and a machine that is also used for other hardness methods has to be verified separately for each method. For machines that cannot meet the specified force-time profile, an annex allows the direct verification of force and testing cycle to be modified.

Bench Brinell testers such as the BrinGen 3000 Series Brinell hardness tester are used for Brinell testing where machine verification to ISO 6506-2 is part of the lab routine, together with calibrated reference blocks. If you need help matching ISO 6506-2 requirements to your parts or setup, contact our team.

Products With This Standard: ISO 6506-2

Below you can find the products in our catalog that support this standard and the related testing workflow.

BrinGen 3000 Series – Digital and Automatic Brinell Hardness Tester

BrinGen 3000 Series – Digital and Automatic Brinell Hardness Tester

BrinGen 3000 Series is a digital Brinell hardness tester for evaluating indentation resistance in metals such as cast iron, unquenched steel, non-ferrous metals, and soft bearing alloys. With loads from 62.5 kgf to 3000 kgf, closed-loop force control, automatic loading, dwell, and unloading, LCD operation, a 20X optical microscope, and optional optical analysis software, it improves accuracy and repeatability.

View Product
BrinGen Scope – CCD Brinell Measuring Scope

BrinGen Scope – CCD Brinell Measuring Scope

BrinGen Scope is an advanced CCD Brinell measuring scope for manual or digital Brinell hardness testing systems. Designed to work with a computer or laptop, it automates indentation measurement, displays real-time results, tolerance values, and related test data, while still supporting manual measurement. ASTM E140 conversion tables, Excel export, and 2.5, 5, and 10 mm ball indentation support improve reporting accuracy.

View Product
UniGen – Universal Hardness Tester (Rockwell, Vickers, Brinell)

UniGen – Universal Hardness Tester (Rockwell, Vickers, Brinell)

UniGen is an all-in-one universal hardness testing system for Rockwell, Vickers, Knoop, and Brinell measurements. Built for accurate, repeatable hardness testing, it combines a large touchscreen interface, closed-loop load-cell force control, automated test-force correction, and compensated loading without traditional weights. ASTM, ISO, JIS, and GB/T compatibility makes it suitable for laboratories needing multiple hardness methods in one robust platform.

View Product