Detail Information

Applications:	Electrical Insulators, Cutting Tools, Wear Parts, Biomedical Implants	Dielectric Loss:	0.0002
Flexural Strength:	300 To 400 MPa	Color:	White To Off-white
Temperature Resistance:	Up To 1600°C	Manufacturing Method:	Dry Pressing Or Isostatic Pressing
Surface Finish:	Polished	Maximum Use Temperature:	1600°C
Tensile Strength:	200 MPa	Density:	3.8 To 3.95 G/cm³
Highlight:	OEM Industrial Electric Ceramics , Polished Ceramic Electric Heater

Product Description

Industrial Ceramic Heater Core Heating Element Alumina Electrical Ceramic

Alumina (Al₂O₃) Electronic Ceramics: Powering the Core of High-Tech Electronics

The "Invisible Shield" for Stable Operation of Electronic Devices! Alumina Insulator Ceramic Tubes Are Here!

Who understands the stability anxiety of electronic components under high temperature and high pressure?

This high-purity alumina insulator ceramic tube fully delivers "peace of mind"!

✅ Superb Electrical Insulation: Available in 95%/99%/99.5% high-purity alumina material.

For 99.5% grade, volume resistivity ＞10¹⁶ Ω・cm, dielectric strength up to 20-25 kV/mm,

and dielectric loss tanδ ＜1×10⁻⁴ at high frequency, ensuring superior insulation reliability.

Eliminates leakage risks and guarantees precise circuit operation for various high-voltage electronic scenarios.

✅ Outstanding Key Performance: Mohs hardness grade 9 (second only to diamond),

wear resistance 8 times that of ordinary steel pipes; thermal conductivity 30-40 W/(m・K),

thermal expansion coefficient 7-8×10⁻⁶ /℃, stable operation in a wide temperature range of -40℃~1600℃,

no cracks after 50 thermal shock cycles.

Full Application Scenarios: Semiconductor equipment, power electronics, medical instruments, industrial sensors... It’s competent wherever insulation protection is needed!

Avoid pitfalls in electronic component selection—choose Alumina Insulator Ceramic Tubes! DM us for customized solutions, and enjoy surprise discounts on bulk purchases～

Application 

Mechanical Properties

			Properties

			Unit

			95%Al2O3

			99%Al2O3

			99.5%Al2O3

			Colour

			--

			White

			Yellow

			Yellow

			Density

			g/cm³

			3.7

			3.85

			3.9

			Hardness

			GPa

			13.7

			15.2

			15.7

			Compressive Strength

			MPa

			2000

			2160

			2350

			Flexural Strength

			MPa

			280

			310

			350

			Fracture Toughness

			MPa・m1/2

			3~4

			3~4

			4.5

			Modulus of Elasticity

			GPa

			320

			360

			370

			Poissons Ratio

			--

			0.23

			0.23

			0.23

Thermal Properties

			Properties

			Unit

			95%Al2O3

			99%Al2O3

			99.5%Al2O3

			Maximum Use Temperature

			℃(No load)

			1650

			1650

			1650

			Thermal Conductivity @ 20°C

			W/(m・K)

			24

			29

			32

			Thermal Expansion a at 20–400°C

			1 x 10-6/°C

			7~8

			7~8

			7~8

			Specific Heat

			J/(kg・K)

			780

			790

			780

			Thermal Shock Resistance

			℃(Put in water)

			200

			200

			200

Electrical Properties

			Properties

			Unit

			95%Al2O3

			99%Al2O3

			99.5%Al2O3

			Dielectric Constant

			1MHz

			9.4

			9.9

			9.9

			Dielectric Strength

			V/m

			15 x 10 6

			15 x 10 6

			15 x 10 6

			Dielectric Loss

			1MHz

			4 x 10 -4

			4 x 10 -4

			4 x 10 -4

			Volume Resistivity @ 25°C

			Ω・cm

			>10 14

			>10 14

			>10 14

			Volume Resistivity @ 500°C

			Ω・cm

			>10 8

			>10 8

			>10 10

Various Types of Alumina Ceramic Sealing Ring

We Can Do OEM and 0BM According to Your Drawing and Requirements.

Features of alumina ceramic* Relatively low density;

* Extremely high operating temperature;

* Very high hardness and compressive strength;

* Excellent electrical insulation properties;

* Corrosion and wear resistance;

* Biologically inert, food compatibility.
Alumina Ceramic PropertiesThe following only lists the performance parameters of the three most common aluminum oxide ceramics. 
Normally, alumina ceramics are composed of these types

Packing 
 
 
 
 
Exhibition
FAQ
Q1. Do you provide product samples?
Yes, we provide samples subject to availability. A nominal sample fee may apply in some cases, and shipping costs are borne by the customer.
Q2. What are your accepted payment methods?
We accept T/T (bank transfer) in advance, Western Union, Alipay, and PayPal.
Q3. What is your typical delivery lead time?
Lead times vary depending on product requirements, including material selection, dimensions, and specific manufacturing processes.
Q4. Do you perform quality inspection before shipment?
Yes, we conduct 100% inspection of all goods prior to delivery to ensure they meet specified standards.
Q5. What other ceramic materials do you offer?
We supply a range of advanced ceramic materials, including Alumina, Zirconia, Aluminum Nitride,Boron Nitride, Silicon Nitride, Machinable Glass Ceramic, and related specialized ceramic 

Tag:

Place of Origin:	CHINA
Brand Name:	YH
Certification:	ISO，CE，ROHS
Model Number:	Yh

Minimum Order Quantity:	10
Price:	Negotiated
Packaging Details:	by caront or wooden case
Delivery Time:	10-30days
Payment Terms:	L/C,D/A,D/P,T/T,Western Union
Supply Ability:	10000pcs per month

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Properties	Unit	95%Al2O3	99%Al2O3	99.5%Al2O3
Colour	--	White	Yellow	Yellow
Density	g/cm³	3.7	3.85	3.9
Hardness	GPa	13.7	15.2	15.7
Compressive Strength	MPa	2000	2160	2350
Flexural Strength	MPa	280	310	350
Fracture Toughness	MPa・m1/2	3~4	3~4	4.5
Modulus of Elasticity	GPa	320	360	370
Poissons Ratio	--	0.23	0.23	0.23