Invar® is a ferrous nickel-iron alloy that contains 36%-41% nickel and exhibits excellent controlled expansion qualities. Invar 36® is effective in extreme temperatures ranging from -150°C (-238°F) all the way up to 260°C (500°F), while Invar 42®—or SuperInvar® — maintains nearly constant dimensions in temperatures ranging from -32°C (-25.6F) to 275°C (527°F). Invar® is used primarily for controlled expansion and magnetic applications. This nickel iron alloy is tough, versatile and retains good strength at normal atmospheric and cryogenic temperatures. It can be hot formed, cold formed or machined. Siddhgiri Tube is an industry
leading supplier of Invar® superalloys. We provide custom work, short lead times, and quick delivery on all types of large or small quantities of Invar® shapes including tube, pipe, wire, sheet, and plate.
Enquire NowInvar 36® exhibits controlled expansion qualities and is effective in extreme temperatures ranging from -150°C (-238°F) all the way up to 260°C (500°F), while Invar 42® is effective from -32°C (-25.6F) to 275°C (527°F). This beneficial quality has made Invar 36® and Invar 42® the most effective alloys for the manufacturing of precision instrumentation. The improved micro-yield strength greatly reduces expansion, making Invar 36® and Invar 42® perfect for applications in which a high degree of thermal stability under changing temperatures is required.
Along with a CTE (Coefficient of Thermal Expansion) of near zero, Invar 36® & Invar 42® are designed for use in precision mechanical systems in many different industries and therefore not limited to opto-mechanical engineering. Invar 36® & Invar 42’s® improved dimensional stability holds up to variations in stress over time.
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