Low-expansion iron-nickel alloy (Invar alloy) has a low coefficient of linear thermal expansion within the range of 20℃ to 100℃.
Application: It is used to manufacture various instrument and meter parts that require dimensional stability, or thermal bimetallic passive layers.
The density of this alloy is ρ=8.10g/cm³.
The product varieties are: cold-rolled strip, cold-rolled plate, cold-drawn wire, cold-drawn (rolled) tube, hot-rolled (forged) flat, wire rod, hot-rolled (forged) bar, and cold-drawn bar.
Applicable standard: YB/T 5241-2014.
NILO alloy 36(UNS K93600 and K93601/W. N.1.3912), a binary nickel-iron alloy containing 36% nickel. Its very low coefficient of thermal expansion at room temperature makes it suitable for aerospace composite tools, length standards, measuring tapes and gauges, precision components, as well as pendulum and thermostat rods. It is also used as a low-expansion component in bimetallic strips, cryogenic engineering, and laser components.
