Al2O3 Alumina ceramic machine arm
- Description
- Inquiry
Main Characteristics | –Anti-static electricity — Strong thermal stability–High electrical insulation –Good wear Resistance | |||
Main Applications | Semiconductor automation and so on | |||
Size | Multiple specifications are available, Provide customization | |||
Color | Ivory |
Main Features
• High hardness with low density
• Wear & abrasion resistant
• Resists strong acid and alkali attack at high temperatures
• Excellent electrical insulation properties
• High compressive strength
• High mechanical Strength
• Excellent refractory material
• Moderate thermal conductive and thermal expansion rates
• Resistant to thermal shock
• High dielectric strength
• Transparent to microwave radio frequencies
The specification of ceramic parts
Material option | Alumina(Al2O3), Zirconia (ZrO2), Silicon carbide(SiO2), Silicon nitride(Si3N4) |
Forming methods | ISO pressed, Dry pressed, Ceramic injection molding, Hot pressed |
Specification | OD can be from 1 to 50mm, length can be from 10mm to 800mm |
Precision processing | CNC machining, Precision grinding, Polishing, Lapping, |
Tolerance | The tolerance of OD and ID can be 0.001mm, the tolerance of length can be 0.001mm |
Key parameters | Roughness to be 0.02mm, Flatness to be 0.001mm, Parallelism to be 0.001mm |
Surface quality | Free of cracks, foreign contamination, mirror surface better than Ra0.1 |
Al2O3 Alumina ceramic machine arm
The description of high precision alumina ceramic parts
Alumina (Al2O3) is a hard-wearing technical ceramic material frequently used in a broad range variety of industries applications. After firing and sintering, the alumina ceramic parts can only be precisely machined using diamond-grinding methods. It’s charactered by high tighten tolerance, high hardness and wear resistance, low erosion levels, high-temperature resistance, corrosion resistance, and chemical stability. Furthermore, it can be highly polished making it a mirror surface to reduce friction at the fitting, working status.
We offer a selection of purities ranging from 95 – 99.8%. Our factory has access to many different types of shaping methods, including dry pressing, hot pressing, ceramic injection molding, ISO pressing, tape casting, and extruded.
Our facility is capable of machining a variety of complicated ceramic parts with a very high accuracy dimension through fine grinding, lapping, CNC machining, laser cutting, and so on.
Datasheet of Technical ceramics
Property | Units | Material | ||||
99.5% alumina | 99% alumina | 95% alumina | ZrO2 (Y-TZP) | ZrO2 (TTZ) | ||
Density | g/cm3 | ≥3.85 | ≥3.80 | ≥3.60 | ≥5.95 | ≥5.72 |
Water absorption | % | 0 | 0 | 0 | 0 | 0 |
Hardness | HV | 1700 | 1700 | 1500 | 1300 | 900 |
Flexural strength | Mpa | ≥379 | ≥338 | ≥320 | ≥1200 | ≥1200 |
Compressive strength | Mpa | ≥2240 | ≥2240 | ≥2000 | ≥1990 | 1750 |
Fracture toughness | Mpa m1/2 | 4-5 | 4-5 | 3-4 | 6.5-8 | 11 |
Max. service temperature | ºC | 1675 | 1600 | 1450 | 1000 | |
CTE | 1×10 -6 /ºC | 6.5~8.0 | 6.2~8.0 | 5.0~8.0 | 8.0~9.5 | 10.2 |
Thermal shock | T(ºC) | ≥250 | ≥200 | ≥220 | ≥300 | 350 |
Thermal conductivity(25ºC) | W/m.k | 30 | 29 | 24 | 3 | 3 |
Volume resistivity | ohm.cm | |||||
25ºC | >1 x 10 14 | >1 x 10 14 | >1 x 10 14 | >1 x 10 11 | >1 x 10 11 | |
300ºC | 1 x 10 12 | 8 x 10 11 | 10 12 -10 13 | 1 x 10 10 | 1 x 10 10 | |
500ºC | 5 x 10 10 | 2 x 10 9 | 1 x 10 9 | 1 x 10 6 | 1 x 10 6 | |
Insulation strength | KV/mm | 19 | 18 | 18 | 17 | 20 |
Dielectric constant(1Mhz) | (E) | 9.7 | 9.5 | 9.5 | 29 | 28 |
Al2O3 Alumina ceramic machine arm
Our capability and strength
We have in-housing comprehensive manufacturing types of equipment, including forming, sintering,
CNC machining, precision grinding, laser cutting, and so on, it helps us to control the quality very well.
Also, it greatly benefits cost control.