Pencil Hardness Tester HT-6510P
Applications
Coating hardness measurement is essential for evaluating coating performance. This instrument utilizes the Pencil Scratch Method, providing a fast and economical way to determine film hardness using drawing lead cores or pencil cores. The pencil scratch method has been a globally recognized coating hardness testing standard since the 1980s and is widely used in both laboratory research and industrial production settings.
Testing Standards
GB/T 6739-96 - Coating Hardness Pencil Test Method
ASTM D3363-00 - Standard Test Method for Determination of Coating Hardness by Pencil Test Method
GB/T 1727-92 - General Method for Preparing Film
Testing Principle
The instrument employs mechanical measurement with three contact points touching the coating surface (two wheels and a pencil core) at a 45-degree angle between the pencil and test surface. As the instrument slides across the surface, the pencil creates corresponding tracks in the coating. By observing the marks created by different pencil hardness grades, the film hardness value can be accurately determined.
Instrument Structure
Technical Specifications
| Parameter |
Specification |
| Load Weight |
1000g / 750g / 500g |
| Measurement Angle |
45° |
| Three Touch Points |
Two Wheels, One Pencil Core |
| Scratch Speed |
Approximately 1 mm/s |
Standard Configuration
- Pencil Hardness Tester
- 1000g Weight
- 750g Weight
- 13 Pencils (6B-6H)
- Eraser
- Knife
- Horizontal Pad Block
- Sandpaper