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 …

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

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 …

Jan 18, 2025 · Invar, a nickel-iron alloy renowned for its exceptionally low thermal expansion coefficient, emerges as a cornerstone in applications where accuracy is non-negotiable.

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 …

A detailed overview of the Special Alloy Invar, including applications & 50+ atomic, electrical, mechanical, physical & thermal properties.

Jan 21, 2025 · Also known as constant steel, Invar steel, or Invar alloy, was discovered in 1896 by Swiss physicist Charles Édouard Guillaume. He found a nickel-iron alloy with a thermal …

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.

Invar steel is a nickel-iron alloy known for its low thermal expansion properties. The name “Invar” is derived from “invariable,” reflecting its minimal expansion or contraction with temperature …