| Customization: | Available |
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| Application: | Pepper / Salt / Spice Grinding |
| Grit Size: | From Coarse to Fine |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
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The grinding burr you're looking at is made of 95% alumina. Alumina ceramic is one of the most robust ceramics available. It has outstanding properties that make it one of the most widely used ceramics for structural, wear, and corrosive environments. One of the applications is making reusable pepper / salt / spice grinders. Alumina ceramic burrs exhibit the following critical properties:
High purity alumina as a fine ceramic material is widely used in making reusable grinding burrs.
| Mechanical Property | Ceramic Material | |||
| 99.5% Al2O3 |
99% Al2O3 |
95% Al2O3 |
MgO.SiO2 (Steatite) |
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| Density (g/cm3) | ≥3.90 | ≥3.85 | ≥3.65 | ≥2.70 |
| Water absorption (%) | 0 | 0 | 0 | 0 |
| Hardness (HV) | 1700 | 1700 | 1500 | 800 |
| Flexural strength (Mpa) | ≥379 | ≥338 | ≥320 | ≥190 |
| Compressive strength ( Mpa) | ≥2240 | ≥2240 | ≥2000 | ≥551 |
| Fracture toughness (Mpam1/2) | 4-5 | 4-5 | 3-4 | - |
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