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INVAR 36

INVAR 36 (Also known as NILO 36, Pernifer 36) is an alloy made up of 36% nickel and 64% iron. It has a low coefficient of thermal expansion, making it useful for applications where dimensional stability is required, such as in precision instruments and optical devices. It is also known for its high strength and corrosion resistance. Invar 36 is commonly used in electronic, aerospace and other high-tech industry.

INVAR 36 TECHNICAL INFORMATION

NILO alloy 36 (UNS K93600 & K93601/W. Nr. 1.3912), also known as INVAR 36, is a binary nickel-iron alloy containing 36% nickel. Its low thermal expansion coefficient makes it useful for a wide range of applications, including tooling for aerospace composites, standards of length, measuring tapes and gauges, precision components, and pendulum and thermostat rods. It is also used as the low expansion component in bi-metal strip, in cryogenic engineering, and for laser components. The alloy is also known for its high strength and corrosion resistance, which makes it suitable for use in demanding environments. Additionally, due to its low thermal expansion coefficient, it is used in the manufacturing of precision instruments such as clocks, watches, scientific instruments, and electronic devices.

A close-up view of a stack of shiny, cylindrical metal rods resting in a workshop. The rods, likely forged from fighter jet metals, are uniformly cut with smooth surfaces, arranged parallel to each other, and the background contains blurred machinery and workshop tools.

ROUND BAR

INVAR 36 Round Bar diameters range from 0.125″ to 8.00″ diameter.
A stack of flat metal bars piled on top of each other. The bars, possibly crafted from fighter jet metals, are aligned horizontally, showcasing their thin, rectangular shape and metallic finish. The image highlights the texture and edges of the bars in close detail.

FLAT BAR

Close-up of several stacked aluminum sheets in an industrial setting. The smooth, reflective surfaces of the sheets are clearly visible, akin to the polished finish found in fighter jet metals. The edges show precision cuts, and the background includes blurred industrial equipment and shelving units.

PLATE

INVAR 36 Plate Thickness ranges from 0.1875″ to 5.00″ Thick.
A stack of shiny, rectangular metal sheets, reminiscent of fighter jet metals, is placed on a wooden palette in an industrial setting. The sheets have smooth surfaces and uniform thickness, with the image focused on the layered edges. The background shows blurred industrial equipment.

SHEET

INVAR 36 Sheet Thickness ranges from 0.015″ to 0.1560″ Thick. Some of our Coil stock can be converted to thinner material on demand.

Applications of INVAR 36

AEROSPACE

INVAR 36 is highly resistant to corrosion, making it suitable for use in aerospace applications such as aircraft and spacecraft.

ELECTRONICS

NILO 36 is used in the electrical and electronic industry as a substrate material for multilayer ceramic capacitors, lead frames for semiconductors, and as a material for microwave devices.

CRYOGENICS

NILO 36 is also used in cryogenic applications as it maintains its dimensional stability at low temperatures.

NUCLEAR

NILO 36 is used in nuclear industry as well, for applications such as fuel rod cladding, and control rod drive mechanisms.

OPTICAL

NILO 36 is used in the optical industry, particularly for the manufacturing of mirrors and lenses, due to its low coefficient of thermal expansion.

INVAR 36 SPECIFICATIONS

PLATE & SHEET

BARS & FORGINGS

ROCKWELL INTERNATIONAL

BOEING

UNS NUMBERS

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