| Material | Knoop Hardness Scale |
|---|---|
| Wood – Pine | 10 |
| Copper | 120 |
| Limestone | 125 – 150 |
| Marble | 140 – 180 |
| Slate | 140 – 250 |
| Porcelain Fixtures & China | 400 – 500 |
| Glass & Ceramic | 400 – 550 |
| Ceramic Wall Tile | 450 – 550 |
| Porcelain Wall Tile | 500 – 650 |
| Porcelain Floor Tile | 500 – 650 |
| Marble Style Porcelain Floor Tile | 500 – 650 |
| Granite Style Porcelain Floor Tile | 500 – 650 |
| Granite | 550 – 650 |
| Quartz | 820 |
| Common Tool Steel | 700 – 900 |
| Tungsten Carbide | 2,000 |
| Diamond | 7,000 |
Knoop Hardness Scale: Material Hardness Comparison Chart
The Knoop Hardness Scale chart comparing the hardness of materials like wood, marble, granite, and diamond. Find material hardness values ranging from 10 to 7,000 using the Knoop scale for precision measurement.