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AFBMA Grade 25 Alumina Balls
AFBMA Grade 25 Alumina Balls (alumina spheres) are engineered for high-precision applications requiring dimensional accuracy and durability. Composed of high-purity alumina, these ceramic balls are used in precision bearing systems, ball milling media, and catalytic support structures. Their high hardness, wear resistance, and thermal stability make them ideal for industries such as aerospace, automotive, and materials processing, where low friction and high-temperature operation are critical. In research and development, these alumina balls are utilized for tribological testing, grinding of hard materials, and heterogeneous catalysis studies, supporting advancements in ceramic engineering, energy storage, and nanomaterials research.
Formula: Al₂O₃
Diameter: 10mm
Quantity: 100 Pcs
Type: Precision Sphere
Sphericity: 0.625µm
CAS Number: 1344-28-1
UOM Code: 344-103-73
Legacy Code: AL606870
Distributor Code: GF34410373
Diameter: 10mm
Quantity: 100 Pcs
Type: Precision Sphere
Sphericity: 0.625µm
CAS Number: 1344-28-1
UOM Code: 344-103-73
Legacy Code: AL606870
Distributor Code: GF34410373
SKU: 1000024283
Product Code: AL60-SP-000170
Tolerances
Ball/Sphere
| Diameter | Standard | ±5% |
|---|---|---|
| Diameter | Precision | See Item |
Tolerances
Ball/Sphere
| Diameter | Standard | ±5% |
|---|---|---|
| Diameter | Precision | See Item |
$173.75
each
- Buy 5 for $140.74 each and save 19%
- Buy 10 for $128.58 each and save 26%
No Minimum order
Free technical support
*Free delivery worldwide
Material Properties for Ceramics
Chemical Resistance
| Element | Value |
|---|---|
| Acids - concentrated | Good |
| Acids - dilute | Good |
| Alkalis | Good |
| Halogens | Good |
| Metals | Good |
Electrical Properties
| Element | Value |
|---|---|
| Dielectric constant | 9-10.1 |
| Dielectric strength( kV mm⁻¹ ) | Oct-35 |
| Volume resistivity( Ohmcm ) | >10¹⁴@25 |
Physical Properties
| Element | Value |
|---|---|
| Apparent porosity( % ) | 0 |
| Water absorption - saturation( % ) | 0 |
| Density( gcm⁻³ ) | 3.9 |
Thermal Properties
| Element | Value |
|---|---|
| Melting point( C ) | 2100 |
| Upper continuous use temperature( C ) | 1700 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 850-900@25°C |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 26-35@20°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 8@20-1000°C |
Mechanical Properties
| Element | Value |
|---|---|
| Tensile modulus( GPa ) | 300-400 |
| Hardness - Knoop( kgf mm⁻² ) | 2100 |
| Hardness - Vickers( kgf mm⁻² ) | 1500-1650 |
| Shear strength( MPa ) | 330 |
| Tensile strength( MPa ) | 260-300 |
Pultrusions
| Element | Value |
|---|---|
| Compressive strength( MPa ) | 2200-2600 |
Other Customers Purchased
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Supalox N5003 Alumina Powder Grade: Supalox N5003
Formula: Al₂O₃
Percentage Purity: 99.999%
Particle Size D10: 0.3µmµm
Particle Size D50: 0.45µmµm
Particle Size D90: 0.6µmµm
Weight: 10000g
Phase: Alpha
Colour: White
CAS Number: 1344-28-1
UOM Code: 175-103-97
eachStarting at $197.04
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Supalox H5011 Alumina Powder Grade: Supalox H5011
Formula: Al₂O₃
Percentage Purity: 99.999%
Particle Size D10: 1µmµm
Particle Size D50: 3µmµm
Particle Size D90: 6µmµm
Weight: 10000g
Phase: Alpha
Colour: White
CAS Number: 1344-28-1
UOM Code: 982-932-51
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Supalox N5003G Alumina Powder Grade: Supalox N5003G
Formula: Al₂O₃
Percentage Purity: 99.999%
Particle Size D10: 0.3µmµm
Particle Size D50: 0.45µmµm
Particle Size D90: 0.6µmµm
Weight: 10000g
Phase: Gamma
Colour: White
CAS Number: 1344-28-1
UOM Code: 166-247-28
eachStarting at $195.85
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Supalox H5011G Alumina Powder Grade: Supalox H5011G
Formula: Al₂O₃
Percentage Purity: 99.999%
Particle Size D10: 1µmµm
Particle Size D50: 3µmµm
Particle Size D90: 6µmµm
Weight: 10000g
Phase: Gamma
Colour: White
CAS Number: 1344-28-1
UOM Code: 742-555-63
eachStarting at $195.44
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Alumina Balls
Formula: Al₂O₃
Quantity: 10 Pcs
Type: Non-Precision Sphere
Sphericity: Nominal
CAS Number: 1344-28-1
UOM Code: 439-337-21eachStarting at $144.80
Discounts applied for volume purchases -
Supalox H4011G Alumina Powder Grade: Supalox H4011G
Formula: Al₂O₃
Percentage Purity: 99.99%
Particle Size D10: 1µmµm
Particle Size D50: 3µmµm
Particle Size D90: 6µmµm
Weight: 10000g
Phase: Gamma
Colour: White
CAS Number: 1344-28-1
UOM Code: 403-894-70
eachStarting at $191.94
Discounts applied for volume purchases
