Inv 127

StripDatasheet

Datasheet updated 2024-07-07 21:26 (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 127 is a nickel-iron alloy (NiFe alloy) designed for use at temperatures of up to 600°C (1110°F). The alloy has a moderate and constant thermal expansion factor up to 300°C (570°F).

Typical applications for Inv 127 are in high-temperature thermostats and thermostatic bimetal.

Chemical composition

	Ni %	Fe %
Nominal composition	40.5	Bal.

Mechanical properties

Yield strength	Tensile strength	Elongation	Hardness
R_p0.2	R_m	A
MPa	MPa	%	Hv
270	460	30	125

Physical properties

Density g/cm³	8.12
Electrical resistivity at 20°C Ω mm²/m	0.71

Coefficient of thermal expansion
Temperature °C	Thermal Expansion X10^-6 /K
30-130	3.8

Thermal conductivity
Temperature °C	100
W m^-1 K^-1	12.5

Specific heat capacity
Temperature °C	20
kJ kg^-1 K^-1	0.50

Melting point °C	1425
Magnetic properties	The material is magnetic up to approximately 530°C (the Curie point).