Alumina Rod

Diameter: 1~100mm

SKU: 13O-R

Alumina Ceramic Rods: High-Performance Industrial Solutions

The Industry Standard for Demanding Applications
As the most widely utilized functional ceramic material, alumina offers an exceptional combination of properties that make it indispensable across multiple industries. Our premium-grade alumina rods deliver reliable performance in even the most challenging environments.

Key Material Advantages:
✔ Exceptional Durability – Boasts remarkable hardness (9 on Mohs scale) and outstanding wear resistance
✔ High-Temperature Stability – Maintains structural integrity at elevated temperatures up to 1750°C
✔ Superior Corrosion Resistance – Highly resistant to acids, alkalis, and steam exposure
✔ Excellent Electrical Insulation – Particularly effective in high-temperature electrical applications

Material Considerations:
While offering numerous benefits, alumina rods have specific limitations:

Moderate thermal shock resistance (avoid rapid temperature fluctuations)
Lower fracture toughness compared to some advanced ceramics

Specifications of Alumina Rod

Item	Unit	Al2O3
Physical Property
Color	\	Ivory
Density	g/cm3	3.7-3.9
Purity	%	95~99.8
Gas Permeability	\	0
Water Absorption		0%
Mechanical Properties
Vickers Hardness	GPa	12.3-17.2
Flexural Strength	MPa	300-380
Compressive Strength (HV0.5)	MPa	2000-2350
Elastic modulus	GPa	270-380
Fracture Toughness	MPam^1/2	3.5-4
Thermal Properties
The Max Working Temperature	℃	1650
Thermal Conductivity at room temperature	W/m·k	20-32
Coefficient of Thermal Expansion	10-6/℃	6.5-7.2
Thermal Shock Resistance	△T℃	200
Electrical Properties
Dielectric Strength	KV/mm	10-15
Dielectric Constant		9-10
Dielectric Loss Angle(1MHz)		0.0002-0.0003
Volume Resistivity	Ω·cm	>10¹⁴

Precision Manufacturing Capabilities:

Edgetech Industries employs multiple production techniques to meet diverse application needs:
• Isostatic and dry pressing for high-density components
• Low-pressure injection molding for complex geometries

• Extrusion and grouting for specialized forms
• CNC machining for precision tolerances (±0.01mm achievable)

Custom Engineering Solutions:
The property chart represents standard material characteristics – we specialize in customizing:

Composition (95%, 99%+ purity options)
Microstructure density
Surface finish specifications
Dimensional tolerances
Dia: 1-100mm

Primary Industrial Applications of Alumina Rod:

High-voltage insulation components
Fine Alumina Rod
Abrasion-resistant wear parts
Hydraulic system elements
Precision bearing surfaces
Semiconductor processing equipment

Reliable Packaging & Delivery of Alumina ceramics:
We protect your investment with:
→ Shock-absorbent cushioning systems
→ Reinforced corrugated outer packaging
→ Vacuum sealing for moisture-sensitive items
→ Custom crating for large or delicate orders

Why Professionals Choose Our Alumina Rods: