Technical Data
Alumina (Aluminum Oxide, Al2O3)

Alumina image

Alumina is the most well-known and most commonly used fine ceramic material. It has the same sintered crystal body as sapphire and ruby. It has been used for decades in electrical components for its high electrical insulation, and is widely used in mechanical parts for its high strength, and corrosion- and wear-resistance.

Related products for Alumina

Features

Because alumina is a well-balanced material.

Alumina is the most well-known and most commonly used fine ceramic material. It has the same sintered crystal body as sapphire and ruby. It has been used for decades in electrical components for its high electrical insulation, and is widely used in mechanical parts for its high strength, and corrosion- and wear-resistance.

Alumina is the most well-known fine ceramic material for chemical and physical stability.

  • Thermal properties: High heat resistance and high thermal conductivity.
  • Mechanical properties: High strength and high hardness.
  • Other properties: High electrical insulation, high corrosion resistance and biocompatibility.

Configuration

Dimensional precision achieved by machining

When dimensional precision is required for machined ceramics, Kyocera is capable of achieving the tolerances as shown in the table below.

If greater tolerances are required, please consult us.

MACHINING DIMENSIONAL PRECISION
(Data are in mm unless otherwise specified)

1.Ground ceramic blocks and plates
Ground ceramic blocks and plates
2.Round and Square Bars
Round and Square Bars

PRECISION MACHINED PRODUCTS

Ultra-precision is possible with Kyocera's unique techniques.

Precision machining is affected by shape and material.

Some practical examples are shown in the table below.

PRECISION MACHINED PRODUCTS

* Surface roughness depends on the material. The data shown hear indicates where alumina is used.

Property

Property

* The values are typical material properties and may vary according to products configuration and manufacturing process. For more details, Please feel free to contact us.

* 1: All values for apparent density and bulk density are the same, except for A482R which lists apparent density only.

Bulk density chart
Hardness chart
Flexural strength chart
Compressive strength chart
Young's modulus chart
Flexural strength vs. temperature chart
Thermal expansion chart
Thermal conductivity chart
Heat shock resistance chart
Chemical resistance chart (30 min  boiling)
Unit conversion table of stress & Unit conversion table of thermal conductivity

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