Alumina (Al2 O3) is a common workhorse material in the world of technical ceramics and is utilized in an extensive variety of industries and applications. Alumina’s material properties offer electrical isolation, wear resistance, high temperature resistance, and good mechanical strength. STC’s fully dense, 99.5%, 99.8% and 99.96% alumina bodies offer improved performance over lower purity alumina ceramics in demanding operating conditions.
Our High purity aluminas make for improved corrosion resistance due to lower impurity/silica content. Higher hardness, increased dielectric strength, and in some cases, superior flexural strength. Finer grain sizes also allow for smooth surface finishes. The grade of alumina is selected to best fit the application.
Of our high purity aluminas our 99.96% material exhibits superior flexural strength and dielectric strengths making them excellent candidates for thin walled parts in high-voltage applications.
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|High Mechanical Strength||High Temperature Resistance|
|High Wear Resistance||Excellent Corrosion Resistance|
|Excellent Dielectric Strength||Suitable For food applications|
|low dielectric loss||bio-inert|
|High Strength, Thin Walled Components||Mass Spec Components|
|End Effectors||Precision Valve Seats And Seals|
|bio compatible parts||pump pistons and sleeves|
|high voltage dielectric parts||food compatible parts|
|Materials Property Chart|
|Note: The information in this data sheet is for design guidance only. STC does not warrant this data as absolute values. Forming methods and specific geometry could affect properties. Slight adjustments can be made to some of the properties to accommodate specific customer requirements. Most of the dense materials in the table are resistant to mechanical erosion and chemical attack. STC has performed ASTM testing qualification for certain compositions, in accordance with ASTM D2442. Please consult our technical staff for appropriate material and specific test results.|