High Purity Threaded 99% Alumina Ceramic Al2o3 Insulating Rods
Material: 95%AL2O3, 99%AL2O3,99.3%AL2O3,99.5% AL2O3 ceramic
Alumina rod/ceramic shaft Specifications:
1. Alumina Purity: 99-99.7%
2. Working temperaure: 1800C
3. Diater :M5/M6/M8/M10 ect
4. Mating 99 alumina ceramic sleeve
Features:
1.Alumina is an electrically insulating material, with a high
electrical resistivity, increasing with purity.
2.Very good electrical insulation (1x1014 to 1x1015 Ωcm)
3.Moderate to extremely high mechanical strength (300 to 630 MPa)
4.Very high compressive strength (2,000 to 4,000 MPa)
Typical properties
●Good strength and stiffness
●Good hardness and wear resistance
●Good corrosion resistance
●High thermal conductivity
●High temperature resistance
●Electrical insulation
●Low dielectric constant
Application examples
●Mechanical seal rings
●Plungers or pistons for valves
●Electronic substrates
●High temperature thermocouple tubes
●Textile eyelets or guides
●Electrical insulators
●Wear resistant nozzles
●Ceramic parts for high temperature furnace
95%,99%,99.7% Al2O3 Material Parameters:
| Item | Test Condition | Unit Symbol | 95%Alumina ceramics | 99%Alumina ceramics | 99.7%Alumina ceramics |
| The main chemical ingredient | | | Al2O3 | Al2O3 | Al2O3 |
| Bulk Density | | g/cm3 | 3.6 | 3.89 | 3.96 |
| Maximum Use Temperature | | | 1450°C | 1600°C | 1650°C |
| Water absorption | | % | 0 | 0 | 0 |
| ROHS Hardness | | | ≥85 | ≥89 | ≥89 |
| Flexural strength | 20° C | MPa (psi x 103) | 358 (52) | 550 | 550 |
| Compressive Strength | 20° C | MPa (psi x 103) | 2068 (300) | 2600(377) | 2600(377) |
| Fracture Toughness | K(I c) | Mpa m1/2 | 4-5 | 5.6 | 6 |
Coefficient of thermal expansion | 25-1000° C | 1X 10-6/°C | 7.6 | 7.9 | 8.2 |
Coefficient of thermal conductivity | 20° C | W/m °K | 16 | 30.0 | 30.4 |
| Thermal Shock Resistance | Tc | °C | 250 | 200 | 200 |
| Dielectricity constant | 1MHz.25°C | | 9 | 9.7 | 9.7 |
| Dielectric strength | | ac-kV/mm (ac V/mil) | 8.3 (210) | 8.7 (220) | 8.7 (220) |
| Volume Resistivity | 100°C | ohm-cm | > 1013 | > 1014 | > 1014 |
Factory Shows:
Company Introduction:
Dongguan Ming Rui Ceramic Technology Co., LTD., a professional
manufacturer of machined ceramic parts, has 10 senior engineers and
lots of technicians. We produce strengthened structure zirconia
ceramic bar, ceramic tube, ceramic shaft, ceramic plate, ceramic
sleeve, ceramic valve, ceramic plunger and ceramic arm. The
products are applicable to instruments, medical instruments, clocks
and electronic products, mills, energy and power, machine and
metals, autocar and military and some other high-end areas.
In cooperation with Tsinghua University, we've achieved great
successes in particular requirements. With our professional
knowledge and business experience in machined ceramic parts,
low-budget and high-performance new ceramic products are made of
high–quality raw materials. The value of our ceramic products is
greatly increased due to the composite technology and precise
processing.
Our high efficiency machined ceramic parts, perfect service and
good reputation roots in our professional machined ceramic
technology, continuous innovation, great sincerity and our pursuit
for sustainable development. We have a unique technnology called
“mirror polishing” that has improved the brightness, color,
smoothness of our ceramic parts.
FAQ
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is
15-20 days if the goods are not in stock, it is according to
quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay
the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30%
T/T in advance ,balance before shippment.
If you have any other question, pls feel free to contact us .
