Alloy 36 Sheet (Invar) / K93603 / ASTM F1684 Widely known under several trades names such as Invar and Nilo 36**, this grade is a 36% nickel-iron alloy. AMS l-23011 CL7MIL l-23011 CL7UNS K93602/03 4J36 (China), Fe-Ni36 (France), 1.3912, Ni36 (Germany), X1NiCrMoCu, N 25-20-7 (UK) Invar 36, UNSK93600 thermostat alloy, UNSK93601 pressure vessel sheet (USA)
Invar 36®
4J36, Invar, Expansion Alloy, ASTM B753
Invar36® is an iron-nickel alloy containing 36% nickel. Below 204 ° C, its thermal expansion coefficient is about one tenth of carbon steel
Application
Invar36, such as electronic components, aircraft controls, optical equipment, laser equipment, etc., is often used in environments where dimensional changes are critical.
chemical composition
Carbon 0.02%
Silicon 0.20%
Manganese 0.35%
Nickel 36.00%
Iron balance
Physical properties
Proportion: 8.05
Density: 0.291lb/in3
Average specific heat: 0.1230 Btu/lb/°F
Average thermal expansion coefficient:
200°F 0.720 X 10-6 in/in/°F
300°F 1.17 X 10-6 in/in/°F
500°F 2.32 X 10-6 in/in/°F
700°F 4.22 X 10-6 in/in/°F