How to customize your alumina substrate?

To customize your alumina substrate, please provide us with the following information: Dimensions : Length, Width, Thickness, etc. Hole/slot requirements : Specify the size and position of holes and slots or other features. Tolerances : Specify the required tolerances. Purity of the material (95%, 96%, 99%, 99.7%, 99.95%, etc.) Temperature requirements : Specify the maximum operating temperature. Electrical properties : Insulation resistance, dielectric strength, etc. Application : Please indicate the intended application or industry to help determine the specific type. Surface finishes : Polished, rough, etc. Quantity of the products you need Alternatively, you can provide a drawing with your specifications. Once we have these details, we can provide you with a quote within 24 hours.

What are the types of alumina substrates?

Alumina ceramic substrates are classified by alumina content, preparation process, and application: Alumina content : Low purity (85%-95%): Affordable, moderate strength, for general use. High purity (96%-99.9%): Better conductivity and insulation for electronics. Preparation process : Thick film : Printed layers for hybrid circuits. Thin film : Softer, for precision electronics. DBC : Copper junction, for power modules. Application : High temperature : Heat resistant, for sensors/heaters. Standard : Basic packaging and heat dissipation. High frequency : Low loss, for RF circuits.

Which is better: alumina ceramics or zirconia ceramics?

Alumina ceramics is cost-effective with excellent hardness and wear resistance, ideal for industrial use. Zirconia ceramics offer higher toughness and fracture resistance and are often used in medical and precision parts.

Alumina Substrate | Advanced Ceramics Hub

Name: Alumina Substrate | Advanced Ceramics Hub
Brand: Advanced Ceramics Hub
Price: 100 USD
Availability: InStock

Alumina Substrate

Purity: 95%, 96%, 99%, 99.5%, 99.7%, 99.95%

Custom sizes and standard sizes in stock
Quick Lead Time
Competitive Price

Alumina substrate is a high-performance ceramic material composed primarily of high-purity aluminum oxide (Al₂O₃), offering excellent thermal conductivity, electrical insulation, and high-temperature resistance. As a leading supplier and manufacturer of premium alumina products, we can supply high-quality alumina substrates with various specifications and competitive prices, providing customized solutions to meet specific requirements.

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Or email us at sales@heegermaterials.com.

Alumina substrate data sheet

Reference Code:	HM1979
Purity:	95%, 96%, 99%, 99.5%, 99.7%, 99.95%
Dimensions:	114.3×114.3 mm (4.5″×4.5″), 50.8×50.8 mm (2″×2″), or customized.
Thickness:	0.25-2.0 mm, or customized
Color:	White or ivory
Density:	3.7-3.98 g/ ^cm3

Alumina substrate

Alumina substrate is primarily manufactured from high-purity aluminum oxide (Al2O3) and is widely used in electronic packaging, power modules, LED heat dissipation, and high-frequency circuits. It possesses excellent thermal conductivity, electrical insulation, and high-temperature resistance, making it the most commonly used substrate material for circuit boards. Advanced Ceramics Hub can provide customized solutions in terms of size, shape, and surface treatment to meet diverse industrial and research requirements.

Alumina substrate specifications

Dimensions (length × width):	114.3×114.3 mm (4.5″×4.5″), 50.8×50.8 mm (2″×2″), or customized.
Thickness:	0.25-2.0 mm, or customized
Thermal conductivity:	24 W/mK
Dielectric constant:	9-10 (MHz)
Apparent density:	3.7 g/ ^cm³
Surface roughness:	Ra: 0.03-0.7 μm

Characteristics of the alumina substrate

Advanced Ceramic Hub strictly selects high-purity alumina materials and manufactures products under rigorous quality management, ensuring consistent quality and excellent properties.

The material has a fine-grained structure with minimal porosity, resulting in excellent surface smoothness and flatness. It also exhibits excellent compatibility with both thick and thin-layer materials.
The dimensional deviation in shape and thickness is minimal.
Deformations, flexes and wrinkles are minimal.
In high-temperature environments, its physical and chemical properties remain stable, with excellent resistance to thermal shock. It has a coefficient of thermal expansion close to that of silicon and exceptional thermal conductivity.
Exceptional mechanical strength, with high-strength reinforced substrates available.
Excellent chemical and oil resistance.
Excellent electrical insulation properties, with a high dielectric breakdown voltage, surface resistance and volume resistance, as well as a low dielectric constant.
There are also high-reflectivity substrates suitable for LED applications.

Alumina substrate. Available machining processes.

Glaze treatment
Laser processing
Multilayer
Metallization
Print treatment
Surface grinding
Machining

Applications of alumina substrate

Electronics : In integrated circuits, LED packaging and power modules.
Automotive : As heat dissipating substrates in sensors and ignition systems.
Medical devices : Support for biocompatible electronic components.
Aerospace : Circuit support in high temperature environments.
Telecommunications : High-frequency circuits and microwave devices.

Automotive industry
Electrical and Electronic Area
Medical Area
Telecommunications applications
Aerospace

Alumina Material Properties

Material	Unit	95% Al2O3	96% Al2O3	99% Al2O3	99.5% Al2O3	99.7% Al2O3	99.95% Al2O3
Density	g/cm³	3.7	3.7	3.85	3.9	3.95	3.98
Bending Strength (20℃)	Mpa	300	300	330	360	380	500-600
Compressive Strength (20℃)	Mpa	2000	2000	2000	2350	2000	3500
Young’s Modulus (20℃)	Gpa	270	275	370	370	380	400
Fracture Toughness (20℃)	MPam^½	3.5	3.5	4	4	4	4.5
Poisson’s Ratio(20℃)	\	0.2	0.22	0.22	—	0.23	0.23
Mohs Hardness(20℃)	HRA	8.0-8.5	8.0-8.5	8.5-9.0	9.0	9.0-9.5	9.0-9.5
Vickers Hardness (HV1)	kg/mm²	1600	1600	1600	1650	1750	1800

Material	Unit	95% Al2O3	96% Al2O3	99% Al2O3	99.5% Al2O3	99.7% Al2O3	99.95% Al2O3
Thermal Expansion Coefficient (25-300 ℃）	10^-6K^-1	6.5	6.5	7.6	7.2	7.2	7.5
Thermal Conductivity (20℃)	W/mk	20	25	27.5	32	32	45
Thermal Shock Resistance	△T·℃	200	200	200	250	—	400
Specific Heat Capacity	J/g·k	—	—	0.79	0.78	0.79	0.80
Max Operating Temperature (Oxygen Condition)	℃	1600	1600	1650	1650	1700	1750

Material	Unit	95% Al2O3	96% Al2O3	99% Al2O3	99.5% Al2O3	99.7% Al2O3	99.95% Al2O3
Volume Resistivity (20℃)	Ω·cm	10¹⁴	10¹⁴	10¹⁴	10¹⁴	10¹⁴	10¹⁴
Dielectric Strength	KV/mm	10	10	10	15	15	16
Dielectric Constant (1 MHz, 25℃)	\	9	9	9.1	9.9	9.9	9.9
Dielectric Loss Tangent (1MHz, 20℃)	tanδ	3*10^-4	2*10^-4	3*10^-4	1*10^-4	1*10^-4	1*10^-4

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Semiconductor parts
Shot blast nozzles
Thermocouple tubes
Tap plates
Valve seats
Wear components
Wire and thread guides
Ballistic Armor

Alumina Ceramic Machining

Alumina ceramics are produced through methods such as injection molding, die pressing, isostatic pressing, slip casting, and extrusion. After sintering and densification, machining requires diamond grinding techniques. Advanced Ceramic Hub utilizes cutting-edge green and biscuit machining technology to produce more complex components with traditional methods. Our advanced machining center includes drilling, grinding, milling, polishing, sawing, tapping, threading, and turning, enabling the manufacture of alumina ceramic components with tight tolerances and high complexity. During the machining process, the following precautions should be observed:

Shrinkage Control: Alumina ceramics shrink by about 20% during sintering, requiring dimensional adjustments in the green body stage.
Tolerance Control: Precise tolerances are unachievable in the green or pre-sintered state; fine machining should follow sintering.
Diamond Grinding: Post-sintering, high-hardness alumina requires diamond grinding, as conventional methods fall short.
Tool Selection: Diamond-coated tools or grinding wheels are essential to handle ceramic hardness and prevent tool damage.
Temperature Control: Strict temperature management during sintering prevents cracking or deformation.
Stress Management: Excessive stress during machining must be avoided to prevent brittle failure.
Cutting Speed and Feed Rate: Controlled speeds and feeds ensure quality and extend tool life.
Surface Treatment: Post-machining polishing removes defects, enhancing performance and appearance.

Alumina Ceramic Packaging

Alumina Ceramic products are typically packaged in vacuum-sealed bags to prevent moisture or contamination and wrapped with foam to cushion vibrations and impacts during transport, ensuring the quality of products in their original condition.

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To customize your alumina substrate, please provide us with the following information:

Dimensions : Length, Width, Thickness, etc.
Hole/slot requirements : Specify the size and position of holes and slots or other features.
Tolerances : Specify the required tolerances.
Purity of the material (95%, 96%, 99%, 99.7%, 99.95%, etc.)
Temperature requirements : Specify the maximum operating temperature.
Electrical properties : Insulation resistance, dielectric strength, etc.
Application : Please indicate the intended application or industry to help determine the specific type.
Surface finishes : Polished, rough, etc.
Quantity of the products you need
Alternatively, you can provide a drawing with your specifications.

Once we have these details, we can provide you with a quote within 24 hours.

We carry a wide variety of alumina products in stock, and for these, there is generally no minimum order requirement. However, for custom orders, we typically set a minimum order value of $200. The lead time for stock items is usually 1-2 weeks, while custom orders usually take 3-4 weeks, depending on the specifics of the order.

Alumina substrate is a high-performance ceramic substrate used in the production of printed circuit boards (PCBs). It possesses excellent electrical insulation, thermal conductivity, and mechanical strength. Alumina substrate is the most widely used material for printed circuit boards.

Alumina ceramic substrates are classified by alumina content, preparation process, and application:

Alumina content :

Low purity (85%-95%): Affordable, moderate strength, for general use.
High purity (96%-99.9%): Better conductivity and insulation for electronics.

Preparation process :

Thick film : Printed layers for hybrid circuits.
Thin film : Softer, for precision electronics.
DBC : Copper junction, for power modules.

Application :

High temperature : Heat resistant, for sensors/heaters.

Standard : Basic packaging and heat dissipation.

High frequency : Low loss, for RF circuits.

Alumina ceramics is cost-effective with excellent hardness and wear resistance, ideal for industrial use.
Zirconia ceramics offer higher toughness and fracture resistance and are often used in medical and precision parts.

Advanced Ceramic Hub, established in 2016 in Colorado, USA, is a specialized supplier and manufacturer of graphene products. With extensive expertise in supply and export, we offer competitive pricing and customized solutions tailored to specific requirements, ensuring outstanding quality and customer satisfaction. As a professional provider of ceramics, refractory metals, specialty alloys, spherical powders, and various advanced materials, we serve the research, development, and large-scale industrial production needs of the scientific and industrial sectors.

Advceramicshub Product Enquiry Form

Product*

Name*

Email*

Phone

Country

Your Message (Please provide the product specifications you're interested in.)

File Upload (Please upload the drawings if you have. Max Files Size: 2MB)

Choose File

Alumina Substrate

Alumina Substrate

Alumina substrate data sheet

Alumina substrate

Alumina substrate specifications

Characteristics of the alumina substrate

Alumina substrate. Available machining processes.

Applications of alumina substrate

Alumina Material Properties

Physical Properties:

Applications:

Physical Properties:

Applications:

Physical Properties:

Applications:

Physical Properties:

Applications:

Alumina Ceramic Machining

Alumina Ceramic Packaging

Download

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Alumina Substrate

Alumina substrate data sheet

Alumina substrate

Alumina substrate specifications

Characteristics of the alumina substrate

Alumina substrate. Available machining processes.

Applications of alumina substrate

Alumina Material Properties

Physical Properties:

Applications:

Physical Properties:

Applications:

Physical Properties:

Applications:

Physical Properties:

Applications:

Alumina Ceramic Machining

Alumina Ceramic Packaging

Download

Get A Quote

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