Aluminium oxide balls reinforced by about 10% zirconium oxide offer superior mechanical characteristics, particularly in terms of wear resistance, compression and thermal shock. They are ideal for applications that require robustness and durability. With over 40 years of expertise, Marteau- Lemarie guarantees a stock available in France for fast delivery and personalized accompaniment.
Physical characteristics of the ball Ceramic zta balls
| Ownership | Value | Unit |
|---|---|---|
| Density | 4.13 | g/cm3 |
| Young Module | 380 | GPA |
| Thermal expansion coefficient | 8 (T=0-100°C) | × 10−6 /°C |
| Thermal conductivity | 20 | W/m·K |
| Volume resistivity | >10^15 | D·m |
| Specific heat | 900 | J/kg·K |
| Relative magnetic permeability | <~1 | — |
| Magnetic behaviour | Diamagnetic | — |
| Friction coefficient | 0.52 | — |
Hardness and mechanical resistance of ball Ceramic zta balls
| Ownership | Value | Unit |
|---|---|---|
| Hardness | 1650-1950 | HV |
| Exercise temperatures | -80/1500 | ° C |
| Exercise temperatures | -112/2732 | °F |
Available diameters and grades for ball Ceramic zta balls
| Parameter | Value |
|---|---|
| Minimum diameter | 0.5 mm — 1/32′′′ |
| Maximum diameter | 50 mm — 1.15/16′′′ |
| Grades available | G3-5-6-10-25-40-50-100 |
| Precision standards | Internal standard (tolerances reported in offer) |
Corrosion resistance of ball Ceramic zta balls
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 the ball Ceramic zta balls
Balls for special bearings, pumps and valves, especially when high resistance to corrosion and heat is required. Often used in the medical sector. Also used in barrel polishing and grinding processes.
