The TQC Buchholz Indentation Hardness Test Kit is developed to determine the indentation hardness of coatings in accordance with TS 6037 / EN ISO 2815. The kit includes a calibrated weight with a sharp-edged metal wheel, an illuminated microscope, a small spirit level, a dual-function digital timer, and two marker pens with a template.
The calibrated weight with the sharp-edged metal wheel is placed on the coated surface of the test specimen for a specified period. The length of the indentation mark left in the coating indicates the surface hardness of the coating: longer marks correspond to softer surfaces, while shorter marks indicate harder surfaces.
The Buchholz Hardness Test can be applied under the following conditions:
- The coating to be tested must be applied to a flat, smooth surface that is clean and supported by a rigid substrate capable of resisting the test force.
- The coating must have a sufficient thickness, meaning the indentation depth must be at least 10 µm less than the coating thickness (based on point 1).
- For comparative testing, all samples must have identical coating thickness and be conditioned and tested under the same environmental conditions.
- Since the test causes only minor damage to the coating, it can also be performed on finished products.
The Buchholz Hardness Test is a mandatory requirement for laboratories accredited by Qualicoat, QIB, and GSB.
| Product Code | Description |
|---|---|
| SP1900 | TQC-Sheen Buchholz Hardness Indentation Test |