Polycrystalline oxide tanks have good mechanical characteristics, good resistance to corrosion, abrasion and heat. They are self-lubricating, light, electrically insulating. Attention: the chromatic aspect of the balls may be subject to variation.
Physical characteristics of aluminium oxide ball (al2o3)
| Ownership | Value | Unit |
|---|---|---|
| Density | 3.9 | g/cm3 |
| Young Module | 365 | GPA |
| Thermal expansion coefficient | 7.8 (T=0-100°C) | × 10−6 /°C |
| Thermal conductivity | 31 | W/m·K |
| Volume resistivity | >10^14 | D·m |
| Specific heat | 795 | J/kg·K |
| Relative magnetic permeability | <~1 | — |
| Magnetic behaviour | Diamagnetic | — |
| Friction coefficient | 0.2 | — |
Hardness and mechanical resistance of aluminium oxide ball (al2o3)
| Ownership | Value | Unit |
|---|---|---|
| Hardness | 1250-1700 | HV |
| Exercise temperatures | -100/1600 | ° C |
| Exercise temperatures | -148/2912 | °F |
Available diameters and grades for aluminium oxide ball (al2o3)
| Parameter | Value |
|---|---|
| Minimum diameter | 0.3 mm — 1/64′′ |
| Maximum diameter | 100 mm — 4′′ |
| Grades available | G10-16-20-25-28-40-60-100 |
| Precision standards | ISO 3290 / AFBMA |
Corrosion resistance of aluminium oxide ball (al2o3)
Excellent corrosion resistance in water, saline solutions and acids, also resists in aggressive environments except in contact with hydrofluoric and hydrochloric acids, hot sulphuric acid and strong alkaline solutions.
Applications of aluminium oxide ball (al2o3)
Special bearings, control valves, pumps and valves operating in corrosive environments, pumps for oil installations, flow meters, measuring instruments, medical devices.
