Seasoning grinders can be classified into two types - disposable and reusable by use. As advanced ceramics have superior performance, especially good toughness, wear resistance, and eco-friendly, the ceramic grinding burr is a good replacement for plastic ones.
The most commonly used materials for ceramic grinding burrs are 95% alumina and steatite. Grinding burrs in alumina is often designed to be reusable, while disposable grinding burrs usually use steatite. Disposable grinders are designed in a way that they disable customers from refilling. So these grinders are easy to use and also cost effective, refer to the following technical datasheet for the comparison between alumina and steatite:
Mechanical Property |
Ceramic Material |
95%
Al2O3 |
MgO.SiO2
(Steatite) |
Density (g/cm3) |
≥3.65 |
≥2.70 |
Water absorption (%) |
0 |
0 |
Hardness (HV) |
1500 |
800 |
Flexural strength (Mpa) |
≥320 |
≥190 |
Compressive strength ( Mpa) |
≥2000 |
≥551 |
Fracture toughness (Mpam1/2) |
3-4 |
- |
Application
It's widely used as the key part of the ceramic grinding mechanism in pepper mills, spice mills, herb mills, and salt mills.