Scratch Hardness Tester
Application
Primary applications:
Quantitative assessment of scratch and surface hardness
Evaluation of coatings, thin films, pressure-sensitive membranes, and hard or soft layers
Determination of surface fracture strength and wear resistance
Laboratory research, material development, and quality control
Typical tested samples:
Paints and varnishes
Polymer coatings
Thin-film materials
Laboratory-prepared samples for hardness and durability testing
Standards
(1) JIS K 5600 series – Methods of testing paints
(2) ISO 12137-2:1997 – Paints and varnishes – Determination of resistance to surface scratch
Parameters
| Parameter | Specification |
|---|---|
| Scratch Stylus | Conical, R 0.005–1.0 mm (sapphire tip R0.03 mm optional) |
| Test Force Range | Fixed or continuous loading, 0–50 g / 0–100 g / 0–200 g selectable |
| Stroke Length | 100 mm |
| Scratch Speed | 600 mm/min (typical for ISO 12137-2 testing) |
| Sample Size | Flat panel samples, variable dimensions |
| Optional Software | Tribosoft for recording scratch resistance and force analysis |
Features
Supports both continuous and fixed load scratch testing.
Sapphire stylus ensures long-term durability and consistent measurements.
ISO 12137-2 compliant for paints and varnishes.
Measures surface fracture strength by progressively increasing load during scratch tests.
Optional data analysis software (Tribosoft) allows precise quantification of scratch resistance and monitoring of load during scratching.
Capable of simulating pencil hardness testing under 750 g load at 45° inclination.
Surface friction (static and dynamic) can be recorded and analyzed for sliding behavior.
Wide applicability from thin films to hard membranes using variable radius stylus.
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