Alumina substrates and setter plates are flat, rigid sheets of high-purity alumina used as firing supports, sintering bases and substrates for thin-film and coating work.

Labmina supplies alumina plates from 10×10mm up to 320×320mm in 99% purity, rated to 1600°C. Their flatness and chemical inertness make them a reliable base for repeated high-temperature cycling.

Need a specific thickness, footprint or a ground/polished surface finish? We cut and finish plates to customer specification — contact us for a quote.