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LM4525 Alumina Bar

Catalog No. LM4525
Size Customized (mm)
Material Al2O3
Purity 95%, 99%, 99.7%
Density 3.8~3.9 g/cm3

Alumina Bar Description

Alumina BarAlumina Bar is developed and made of Aluminum Oxide (Al2O3). Alumina is widely used in structural, electronics, medical and electrical fields as one of the most important ceramic oxides. Due to its high melting point (2054℃) and high chemical resistance, Alumina ware is often used during high-temperature demanding and contamination-free reactions. Alumina is also a good refractory metal. It can work up to 1750℃ in both oxidizing and reducing atmospheres. It’s also a good electrical insulator used as a substrate for integrated circuits. Alumina is an important material to make rubies and sapphires in its crystalline form: corundum and using rubies or sapphires can produce more downstream products. Considering Alumina’s price, high melting and boiling points, good resistance, strong hardness and good electrical insulation, Alumina is widely spread and used all over the world in lots of industries.

Alumina Bar Features

  • High melting and boiling points
  • good electrical insulation (1×1014to 1×1015Ω cm)
  • strong hardness (15~ 19 GPa)
  • Strong thermal shock resistance
  • good corrosion and wear resistance
  • bio-inert and food compatible

Alumina Bar Specification

Composition UNIT Al95 Al99 Al997
Al2O3 Content % 95 99 99.7
Color White Ivory Ivory
Tensile Strength Kpsi 32 38 36
Flexural Strength Kpsi 52 55 54
Compressive Strength Kpsi 300 377 350
Density g/cc 3.70 3.90 3.92
Hardness HV, GPa 13.8 17.2 18
Thermal Conductivity W/(m·K) 25 30 30
C.O.T.E. In / In°C (x10^-6) 7.7 7.8 7.8
Working Temperature °C 1500 1650 1750
Dielectric Constant 9.5 9.7 9.8
Volume Resistivity (25°C) Ohm-cm >10^14 >10^14 >10^14

Alumina Bar Application

  • Used for making parts for CVD, ion implants, photolithography, and semiconductor parts.
  • In traditional industries, alumina ceramics are ideal for products such as injector tubes, gas nozzles, and insulators.
  • Used as a material for industrial furnaces due to its ability to maintain its hardness at high temperatures.
  • Used as a protector for high-temperature thermal couples.
  • Used as a material for the chemical industry due to its high corrosion resistance

Alumina Bar Packaging

Our Alumina Bar is carefully handled during storage and transportation to preserve the quality of our product in its original condition.

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