Hardness test blocks are used both for indirect verification and for calibrating hardness testing machines, especially for daily verification. Hardness test blocks are therefore an indispensable tool for quality assurance in hardness testing to ensure correct test results.
| Test method | Hardness value | Material | Dimension | Online Store |
|---|---|---|---|---|
| HRA | 31-85 | Aluminium, Steel | 60x60x16mm | Order |
| HRBW | 40-100 | Aluminium, Steel | 60x60x16mm | Order |
| HRC | 20-67 | Steel | 60x60x16mm 100x100x16mm | Order |
| HRD | 10-76 | Aluminium, Steel | 60x60x16mm | Order |
| HREW | 85-106 | Aluminium | 60x60x16mm | Order |
| HRFW | 76-105 | Aluminium | 60x60x16mm | Order |
| HRGW | 41-62 | Aluminium | 60x60x16mm | Request |
| HRHW | Aluminium | 60x60x16mm | Request | |
| HRKW | 45-91 | Aluminium | 60x60x16mm | Request |
| HR2,5/62,5 | 63-84 | Aluminium | 60x60x16mm | Order |
| HR2,5/187,5 | 60-80 | Steel | 60x60x16mm | Order |
| Super-Rockwell | ||||
| HRN | depending on the method | Aluminium, Steel | 60x60x16mm | Order |
| HRTW | depending on the method | Aluminium, Steel | 60x60x16mm | Order |
| HRYW | depending on the method | Aluminium | 60x60x16mm | Order |
In-house production – Made in Germany
Our hardness test blocks benefit daily from our growing experience of in-house production. We stand for very good quality.
Calibrated according to DIN EN ISO / ASTM with traceable DAkkS calibration certificate
All hardness test blocks are issued with calibration certificates by accredited laboratories in accordance with the currently valid DIN EN ISO and ASTM standards.
Fast availability
The majority of our hardness test blocks are available within a few working days or even from stock.
Homogeneous test surface
The quality of our specially produced hardness test blocks is characterised by a homogeneous test surface.
Optionally with laser grid
We will be happy to engrave a standard-compliant laser grid for better positioning of your indentations and to maintain the distances between them.
Optionally multi-calibrated
Our sales team can also advise you on multiple calibrations for your hardness test blocks.
Square test surface
The larger test surface and the given shape lead to an advantage over round plates and can be used more easily for the automation of periodic tests.
Tools
You can download an Excel calculation tool from our website to calculate the systematic measurement deviation and repeatability.
Why do you need hardness test blocks?
Every day that your testing machine is used, the machine must first be verified. This must be carried out for each hardness test method used using hardness test blocks. At least one hardness test block must be selected for each hardness test method. It is recommended to select the hardness test block with a hardness value as close as possible to the hardness values of the test piece to be tested. At least two indentations must be made on each hardness test block, for which the systematic measurement error and the repeatability of the results must be calculated. If the systematic error of measurement and the repeatability are within the permissible limits, the testing machine may be considered satisfactory.
The DIN EN ISO standard recommends that the validity of the calibration of hardness test blocks made of steel should not exceed 5 years and those made of aluminium should not exceed 2-3 years. We will be happy to provide you with a quotation.