China 4j36 Vacodil36 Invar Alloy Wire

Nilvar Low Expansion Alloy wire
Classification : low coefficient of thermal expansion alloy
Application: Invar is used where high dimensional stability is required, such as precision instruments, clocks, seismic creep gauges, television shadow-mask frames, valves in motors, and antimagnetic watches. In land surveying, when first-order (high-precision) elevation leveling is to be performed, the leveling rods used are made of Invar, instead of wood, fiberglass, or other metals. Invar strutDrilling Rig s were used in some pistons to limit their thermal expansion inside their cylinders.
Chemical Composition in %, Invar
Ni
35-37%
Fe
.
C
0.05%
Si
0.3%
Mn
0,3-0,6 %
S
o 0.015%
P
0.015%
Mo
0.1%
V
0.1%
Al
0.1%
Cu
0.1%
Cr
0,15 %
Basic physical constants and mechanical properties Cleaning Swab of the alloy:
Density: γ = 8,1 g / cm3;
Electric rStamping esistivity: ρ = 0,78 ohm mm2 ? / m;
The temperature of the Curie point: Θs = 230 ° C;
Modulus of eMachinery for Glass & Ceramics lasticity E = 144 kN / mm2;
Linear expansion coefficient a1 (20-100 ºC) ≤1,5 * 10-6 ºC -1
Temperature Range/ºC1/10-6ºC-1Temperature Roadway Safety Range/ºC1/10-6ºC-120~-601.820~2503.620~-401.820~3005.220~-201.620~3506.520~01.620~4007.820~501.120~4508.920~1001.420~5009.720~1501.920~55010.420~2002.520~60011