Invar 36 Foil (Invar) / K93603 / ASTM F1684 strip Controlled Expansion Alloy

Invar 36 Foil

Alloy 36 foil (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)

• Description

Invar36 is an iron-nickel alloy containing 36% nickel. Below 204C, 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