A castable invar alloy based on the Fe – Ni – Co – C system is developed. The highest average values of the coefficient of linear thermal expansion of the alloy are 5.2 × 10–6 K–1, 6.3 × 10–6 K–1, and 7.4 × 10–6 K–1 in the temperature ranges of 20 – 400, 20 – 450, and 20 – 500°C, respectively. The alloy is designed for mold casting of parts with elevated heat resistance including those for operation in a couple with ceramics, carbon plastics, and other polymer composite materials (PCM).
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 10, pp. 50 – 53, October, 2010.
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Chermenskii, V.I., Konchakovskii, I.V., Grachev, S.V. et al. Precision castable alloy of invar class for operating temperatures of up to 500°C. Met Sci Heat Treat 52, 504–507 (2011). https://doi.org/10.1007/s11041-010-9308-4
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DOI: https://doi.org/10.1007/s11041-010-9308-4