High Temperature Insulation Polishing Industrial Al2O3 Alumina Ceramic Rods

Product Description

Product Description

1:Alumina ceramic insulating column

Our heating ceramic components are crafted from 99% high-purity alumina (Al2O3≥99%), featuring superior thermal conductivity, outstanding electrical insulation and exceptional high-temperature stability. With ultra-low dielectric loss, high breakdown voltage and excellent resistance to oxidation and chemical corrosion, these ceramics maintain stable performance under long-term high-temperature working conditions. High mechanical strength and reliable thermal shock resistance effectively prevent cracking during frequent heating and cooling cycles. Precision machined with strict dimensional tolerances, optional metallization is available for electrode assembly. Widely used in electric heating elements, industrial heaters, thermal sensors, semiconductor heating modules and household heating equipment. Custom shapes, sizes and surface treatments are supported.



2:Technical Specs
Material: 99% high-purity alumina (Al2O3 ≥99%), white
Density: ≥3.85 g/cm³
 
Electrical
- Superior insulation, dielectric strength: 15-18 kV/mm
- Ultra-low dielectric loss at 1MHz
 
Thermal
- Thermal conductivity: 24-30 W/(m·K)
- Max continuous operating temperature: 1700ºC
- Excellent thermal shock resistance
 
Mechanical
 
- High bending strength & Vickers hardness
- Resist oxidation, acid and alkali corrosion
 
Customization
 
- Precision tight-tolerance machining
- Optional Mo-Mn / tungsten metallization
- Custom holes, grooves, polished or as-fired surfaces
 
Applications
Electric heating components, industrial heating modules, thermal sensors, semiconductor equipment, home appliance heating parts

 

Detailed Photos

Product Parameters

MATERIAL	Aluminum						Mullite	Zirconia
Properties	Unit	AL997	AL995	AL99	AL95	AL60		ZrO2
Ingredient		99.70%	99.50%	99%	95%	60%
Color		Ivory	Ivory	Ivory	white	white		white
Permeaility		Gas-tight	Gas-tight	Gas-tight	Gas-tight	Gas-tight	Gas-tight	Gas-tight
Density		3.92	3.9	3.88	3.75	2.9	2.6	6.02
Hardness	Mohs Scale	9	9	9	8.8	7.5	8	8.5
Water Absorption		<=0.2%	<=0.2%	<=0.2%	<=0.2%	<=0.2%
Flexural Strength(Typical 20ºC)	Mpa	375	370	340	304	205	120	1200
Compressive Strength(Typical 20ºC)	Mpa	2300	2300	2210	1910	1820	500	5700
Coefficient of Thermal Expansion(25°ºC to 800ºC)	10/ºC	7.6	7.6	7.6	7.6	7.1	5.6	10
Dielectric Strength(5mm Thickness)	AC-KV/MM	10	10	10	10	9	10.2
Dielectric Loss25°C@1MHz		<0.0001	<0.0001	<0.0006	<0.0004	<0.0007	<0.002	<0.001
Dielectric Constant25° C@1MHz		9.8	9.8	9.5	9.2	8.6	6	29
Long-time operating temperature	ºC	1700	1650	1600	1400	1200	1550	1600
Terminal Conductivity(25ºC)	W/m*k	35	35	34	20	16	3.6	3

Packaging & Shipping

 

FAQ

1.Q:Are you a factory?
A:Yes. Our factory was established in 2009. 

2.Q: Will you accept customized requirement?
A: Of course, customized service is surely acceptable. Welcome to send us your drawing and more detailed specification parameters. 
We can supply you the products as per your specific requirements.

3.Q:Can we order products?
A:Yes. We can design and produce according to customers'requirements. ODM/OEM orders are welcome.

4. Q:Could I get some sample?
A: Yes, its our honnr to offer sample for your reference.just let us know once you need.

5.Q: What's the delivery time for sample?
A: Generally it shall take 5~7days. For certain products, we need to prepare the materials for it. That depends.

WorkShop

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Company Profile :

We are  a professional manufacturer of high-performance industrial ceramics with over [10] years of experience. We specialize in R&D, production, and export of precision ceramic components, covering alumina ceramics, zirconia ceramics, silicon nitride ceramics, and custom ceramic parts.

 

Equipped with advanced production lines (including CNC precision machining, isostatic pressing, and high-temperature sintering) and strict quality control systems (ISO 9001 & CE certified), we ensure products meet international standards for wear resistance, high-temperature resistance, corrosion resistance, and electrical insulation.

 

Our ceramics are widely used in automotive, electronics, machinery, aerospace, and chemical industries. We serve global clients with OEM/ODM services, flexible customization, and on-time delivery. Committed to technological innovation and customer satisfaction, we strive to be your reliable partner for industrial ceramic solutions.

 

 

 

Certifications