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Al2o3 Insulating Threaded 99% Alumina Ceramic Rod High Temperature Resistance

Al2o3 Insulating Threaded 99% Alumina Ceramic Rod High Temperature Resistance

  • Al2o3 Insulating Threaded 99% Alumina Ceramic Rod High Temperature Resistance
  • Al2o3 Insulating Threaded 99% Alumina Ceramic Rod High Temperature Resistance
Al2o3 Insulating Threaded 99% Alumina Ceramic Rod High Temperature Resistance
Product Details:
Place of Origin: China
Brand Name: Mingrui
Certification: ISO9001:2015,
Model Number: Customized
Payment & Shipping Terms:
Minimum Order Quantity: 20 pieces
Price: negotiable
Packaging Details: wooden case or carton box with foam
Delivery Time: 20 working days after the order confirmed
Payment Terms: L/C, T/T, Western Union, MoneyGram, D/P, D/A
Supply Ability: 10000 pieces month
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Detailed Product Description
Material: 95%-99% Alumina Ceramic Standard: As The Drawings
Purity: 99% Max. Working Temperature:: 1700℃
Density: 3.65 - 3.90 G/cm3 Corrosion Resistance: High
Thermal Shock Resistance: 180 - 220 T(°C) Flexural Strength: 280 - 300 Mpa
High Light:

porous ceramic rod


alumina ceramic rod

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



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


Al2o3 Insulating Threaded 99% Alumina Ceramic Rod High Temperature Resistance 0


Factory Shows:

alumina ceramic bushing

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.

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 .



Contact Details
Dongguan Ming Rui Ceramic Technology Co.,ltd

Contact Person: Admin deng

Tel: 86-18122974730

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