Characteristics:

Invar is a trademark for an iron-nickel alloy containing 35-36% nickel and characterized by an extremely low coefficient of thermal expansion (excellent for applications requiring no dimensional changes with temperature variations.) Invar is strong, tough, ductile and possesses a useful degree of corrosion resistance. It is magnetic in the temperature range up to 400 oF

Applications: Precision instruments, measuring tapes, weights, etc.

GENERAL PROPERTIES
Specific Gravity: 8.08
Melting Point: 2600 oF
Density: 0.292 lb/in3
Electrical Resistance: 494 ohms/mil/ft
Specific Heat: 0.123 BTU/lb/oF
Thermal Conductivity: 72.6 BTU/ft2/in/oF/hr
Inflection Temperature: 375 oF
Curie Temperature: 530 oF
Specific Gravity: 8.08
Melting Point: 2600 oF
Density: 0.292 lb/in3
Electrical Resistance: 494 ohms/mil/ft