Low expansion refers to a low coefficient of thermal expansion (CTE)—the amount a cured material expands or contracts as its temperature changes. CTE is commonly reported in parts per million per degree Celsius (ppm/°C). Specialty low-expansion epoxies can have published values around 9–18 ppm/°C, depending on the formulation and measurement conditions. Low-expansion epoxies help maintain dimensional stability in aerospace and defense assemblies exposed to temperature changes. They are particularly useful…
Paven PatelOctober 6, 2026

