Invar, also known generically as FeNi36 (64FeNi in the US), is a nickel – iron alloy notable for its uniquely low coefficient of thermal expansion (CTE or α).

Invar, alloy of iron that expands very little when heated; it contains 64 percent iron and 36 percent nickel. Invar was formerly used for absolute standards of length measurement and is now used for …

Invar has the lowest thermal expansion of any known metal or alloy from room temperature up to 230?C. Special low expansion and sealing alloy grades are available. Applications include thermostats, …

May 17, 2025 · Discover Invar Steel's unique properties, including low thermal expansion, and its key applications in precision instruments and aerospace components.

2 days ago · A novel approach for in-situ synthesis of Invar alloy for overhead conductors using self-propagating reducing refining, which utilizes the highly exothermic nature of the system to achieve …

Aug 19, 2025 · "Invar" is named after the English word "invariable". It is named so because the dimensions of components made from material Invar do not vary with a change in temperature.

Oct 26, 2024 · Invar is an alloy of iron and nickel known for its low thermal expansion. It is equipped with various properties, and the best one is that it contracts and expands minimally when there is a …