Alumina Rod Bar

Portfolio: 95%, 96%, 99%, 99.5%, 99.7%, 99.95%
Diameter : 1-100 mm, customizable

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

Alumina rods/bars are high-performance ceramic materials composed primarily of alumina with a purity ranging from 90% to 99.9%. Additives are used to enhance their properties. As a leading supplier and manufacturer of premium alumina products, we can supply high-quality alumina rods and bars with various specifications and competitive prices, offering customized solutions to meet specific requirements.

Or email us at sales@heegermaterials.com.

Alumina Rod/Bar Data Sheet

Reference Code:	HM1975
Purity:	95%, 96%, 99%, 99.5%, 99.7%, 99.95%
Color:	White
Density	3.7-3.98 g/cm³
Diameter:	1-100 mm, customized

Alumina Rod Bar

Alumina rods are manufactured in a wide range of purities with additives designed to enhance their properties. Typical purities range from 90% to 99.9%. They offer exceptional resistance to high temperatures, corrosion, and mechanical stress. With a smooth surface, high hardness, and excellent electrical insulation properties, they perform reliably under demanding conditions. Advanced Ceramics Hub can supply customized solutions in terms of diameter, length, and surface finish to meet diverse industrial and research requirements.

Advantages of alumina Rod bars

Excellent electrical insulation properties
High hardness and mechanical resistance
Resistant to wear and abrasion
High thermal conductivity and thermal shock resistance
Low density
Resistant to attack by strong acids and alkalis at high temperatures
Transparent to microwave radio frequencies
High compressive strength and dielectric strength
Highly specific thermal conductivity and thermal expansion indices

Applications of the alumina Rod Bar

Industrial heating elements : These are used as support rods or insulating components in high-temperature furnaces.
Mechanical stirring rods : These are used as corrosion-resistant stirring tools in chemical or materials processing.
Electrical insulation rods : Used in electronic devices to insulate and support conductive parts.
Grinding media : These serve as wear-resistant grinding bars in grinding or crushing equipment.
High-temperature laboratory tools : These are used as sample holders or handling tools in high-temperature environments.
Wear-resistant shaft bushings : Applied in mechanical systems as durable and high-temperature resistant shaft supports.
Medical equipment : They are used as biocompatible components, such as support rods in surgical tools.

Electrical and Electronic Area
High-temperature Lab
High-temperature ovens
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 rod bar, please provide the following details:

Dimensions : Diameter × length (for the rod), length × width × height (for the bar).
Purity of the material (95%, 96%, 99%, 99.7%, 99.95%, etc.)
Tolerances : Specify the required tolerances.
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.

La cerámica de alúmina es un material cerámico de alto rendimiento compuesto de alúmina con una pureza que oscila entre 90%~99,9%. Tiene una excelente resistencia al calor, a la corrosión y una gran dureza, y se utiliza habitualmente en componentes industriales, sustratos electrónicos y dispositivos médicos.

Alumina ceramics offers advantages including high strength, wear resistance, high-temperature tolerance (up to 1700 ℃), excellent electrical insulation, and chemical stability, performing exceptionally in harsh conditions.

Alumina ceramic is cost-effective, with excellent hardness and wear resistance, ideal for industrial use.
Zirconium ceramics offer greater 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*

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Alumina Rod Bar

Alumina Rod Bar

Alumina Rod/Bar Data Sheet

Alumina Rod Bar

Advantages of alumina Rod bars

Applications of the alumina Rod Bar

Alumina Material Properties

Physical Properties:

Applications:

Physical Properties:

Applications:

Physical Properties:

Applications:

Physical Properties:

Applications:

Alumina Ceramic Machining

Alumina Ceramic Packaging

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Alumina Rod Bar

Alumina Rod/Bar Data Sheet

Alumina Rod Bar

Advantages of alumina Rod bars

Applications of the alumina Rod Bar

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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