We now just released the MSDS data sheet for alumina grinding media ball, you can find this document at: http://www.alumina-ball.com/resources.html

Abstract:
ALUMINA GRINDING BALL TECHNICAL DATA SHEET
1. Chemical composition
AL2O3    :   92% Min, WT
2. Specific Properties
Sizes    :   40 mm, ±1.5mm
Density    :   3.60 g/cm3
3. Typical physical properties
Material hardness  :   9 (Mohs hardness)
4. Product details
Commodity name  :   Alumina grinding ball
Manufacturer   :   HuaMing Alumina, China
Origin    :   China

For more details, pls goto: http://www.alumina-ball.com/resources.html

We recently got one inquiry for alumina grinding ball from one European customer, who use alumina ball for dry grinding quartz and looking for suggestion / recommendation from us.

Pls first check the technical specification for our high alumina grinding media ball as the following:

1) 92% alumina grinding ball

• Al2O3: 92% Min.
• Fe2O3: 0.25% Max.
• Mohs Hardness: 9
• Water absorption: 0.02% Max.
• Density: 3.60 g/cm3 Min.
• EWT: 0.15 Max.

2) 95% alumina grinding ball

• Al2O3: 95% Min.
• Fe2O3: 0.20% Max.
• Mohs Hardness: 9
• Water absorption: 0.02% Max.
• Density: 3.65 g/cm3 Min.
• EWT: 0.10 Max.

If your grinding work mode is batch grinding, then 92% alumina grinding ball is O.K., if your grinding work mode is continuous grinding, then 95% alumina grinding ball is most recommended.