Low Thermal Expansion Alloys for Precision Equipment-NEXTECK SINGAPORE PTE LTD

Low Thermal Expansion Alloys for Precision Equipment

Date｜ 2026-10-28

As power electronics and semiconductor equipment continue to advance, efficient heat dissipation and reliable electrical insulation have become increasingly important.

Aluminum nitride (AlN) ceramic substrates combine high thermal conductivity, excellent electrical insulation, and a coefficient of thermal expansion close to that of silicon. Compared with conventional alumina ceramics, AlN offers superior heat transfer performance, helping improve thermal management and reduce thermal stress.

AlN ceramic substrates are widely used in power semiconductors, power modules, and semiconductor manufacturing equipment, making them an important material for high-performance electronic applications.

NEXTECK continues to support the semiconductor and electronics industries with advanced material solutions and application expertise.

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In semiconductor manufacturing, laser processing, and precision measurement, temperature variations can cause materials to expand or contract, affecting dimensional accuracy, positioning, and equipment stability. Low thermal expansion alloys help minimize these changes and support high-precision engineering applications.

Invar 36 (Fe–36Ni) is a nickel-iron alloy containing approximately 36% nickel, with iron as the balance. Its low thermal expansion characteristics make it suitable for optical and laser systems, precision measuring instruments, and structural components requiring excellent dimensional stability.

For applications requiring even lower thermal expansion within a specific temperature range, Super Invar 32-5 (Fe–32Ni–5Co) incorporates cobalt to further control thermal expansion. Typical applications include precision optical systems, laser equipment, and high-accuracy measurement structures.

By selecting the appropriate alloy composition and material specifications, low thermal expansion alloys help maintain dimensional stability and support the demanding requirements of precision manufacturing and measurement.