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The temperature dependence of Young's modulus and the shear modulus of polycrystalline alumina is given over the range of 25 to 1000 °C. Results are expressed in terms of the dimensionless ratio: modulus value at temperature divided by modulus value at 25 °C. These results are intended for use with Standard Reference Material No. 718 which is intended for calibration of apparatus used to determin elastic moduli of solids by a resonance technique. The worst agreement is 9.5 × 10 -4 for the flexure and 19.1 × 10 -4 for the torsion, between any two individual measurements, and we recommend these as the minimum acceptable limits in using the standards.

journal of research of the national bureau of standards. section a. physics and chemistry

An alumina standard reference material for resonance frequency and dynamic elastic moduli measurement. II. Characteristic values for use from 25 C to 1000 C