Alumina Ball

Purity: 95%, 96%, 99%, 99.5%, 99.7%, 99.95%
Diameter: 0.8-100 mm, or customized

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

Alumina Ball is a high-performance ceramic material primarily composed of alumina with the purity ranging from 90%-99.9%. The additives is designed to enhance its properties. It is widely used as grinding media, catalyst support, chemical packing material, and wear-resistant linings. As a leading supplier and manufacturer of premium alumina products, we can supply high-quality alumina balls with various specifications and competitive prices, offering customized solutions to meet specific requirements.

Or email us at sales@heegermaterials.com.

Alumina Ball Data Sheet

Reference Code:	HM1985
Purity:	95%, 96%, 99%, 99.5%, 99.7%, 99.95%
Color:	White
Density:	3.7-3.98 g/cm³
Diameter:	0.8-100 mm, or customized

Alumina Ball

Alumina Ball is made from high-purity aluminum oxide (Al2O3) with typical purities ranging from 90%-99.9%. It has been proven to have superior wear performance in corrosive environments and high-temperature conditions. It resists oxidation and is tolerant to high moisture environments, salt solutions, and many chemicals. These excellent properties make it widely applied in ball mills, chemical twoers, and high-temperature equipment. Advanced Ceramics Hub can supply customized solutions for diameter and surface finish to meet diverse industrial and research requirements.

Alumina Ball Advantages

Excellent electrical insulation properties
High hardness and mechanical strength
Wear and abrasion-resistant
High thermal conductivity and thermal shock resistance
Low density
Resistant to strong acid and alkali attack at high temperatures
Transparent to microwave radio frequencies
High compressive and dielectric strength
Very specific thermal conductive and thermal expansion rates

Alumina Ball Applications

Grinding Media: Used in ball mills to grind ceramic raw materials, ores, and pigments, leveraging their high hardness (Mohs 9) and wear resistance to minimize contamination and boost efficiency.
Catalyst Support: Serve as a support material for catalysts in chemical and petroleum refining processes, thanks to their high surface area, heat resistance (up to 1700°C), and chemical stability.
Packing Material: Employed as packing in chemical towers (e.g., distillation or absorption columns) to enhance mass transfer efficiency, owing to their corrosion resistance and thermal stability.
Wear-Resistant Linings: Applied as linings in pipelines, hoppers, or equipment to protect against abrasion, especially in mining and cement industries.
Valves and Seals: Used as ball valves or sealing components in pump systems, extending service life due to their high strength and corrosion resistance.
High-Temperature Insulation: Utilized in high-temperature furnaces or kilns as insulation or support materials, benefiting from low thermal conductivity and excellent thermal stability.

Electrical and Electronic Area
High-temperature Lab
High-temperature Furnaces
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 ball, please provide the following details:

Diameter: Specify the diameter you need.
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 balls 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 ceramics is a high-performance ceramic material composed of alumina with a purity ranging from 90%~99.9%. It has excellent heat resistance, corrosion resistance, and high hardness, commonly used in industrial components, electronic substrates, and medical devices.

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 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.

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Alumina Ball

Alumina Ball

Alumina Ball Data Sheet

Alumina Ball

Alumina Ball Advantages

Alumina Ball Applications

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 Ball

Alumina Ball Data Sheet

Alumina Ball

Alumina Ball Advantages

Alumina Ball Applications

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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