Inv 155

StripDatasheet

Datasheet updated 2017-05-17 07:21 (supersedes all previous editions)

Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for materials under the trademark Kanthal^®.

Inv 155 is a nickel-iron alloy (NiFe alloy) for use at temperatures up to 200ºC. The alloy has a low constant thermal expansion factor up to 180°C.

Typical applications for Inv 155 are in thermostats and thermostatic bimetals.

Mechanical properties

Yield strength	Tensile strength	Elongation	Hardness
R_p0.2	R_m	A
MPa	MPa	%	Hv
320	500	30	120

Physical properties

Density g/cm³	8.09
Electrical resistivity at 20°C, Ω mm²/m^-1	≤0.78

Coefficient of thermal expansion
Temperature °C	Thermal Expansion X10^-6 /K
30-130	1.45

Thermal conductivity
Temperature °C	100
W m^-1 K^-1	11

Specific heat capacity
Temperature °C	20
kJ kg^-1 K^-1	0.51

Melting point °C	1425
Magnetic properties	The material is magnetic up to approximately 180°C.