Nilo / Invar 36 80.0mm Dia Rod

Invar/Nilo Alloy 36

80.0mm dia Rod / Bar
W.Nr 1.3912 UNS K93600 ;
cold drawn and annealed round bar / rod
Controlled Expansion Alloy ; Glass Sealing Alloy ; Thermal Expansion Alloy ;
UK Stockist & Distributor , ship worldwide

Note : Contact us directly if you need larger quantities, custom cut lengths or lengths longer than those listed above. We will be happy to assist you. 

Key Applications of Invar

1. Aerospace & Composite Tooling
Invar is widely used in carbon fiber molds for aircraft components (e.g., programs like the Boeing 787 and Airbus A350) because its extremely low thermal expansion matches carbon composites during high-temperature curing. It is also used in satellite structural supports to maintain precision alignment despite extreme temperature fluctuations in space.

2. Precision Instruments & Metrology
Due to its dimensional stability, Invar is used in laser housings, seismographs, and high-precision surveying tapes. It prevents measurement errors caused by thermal expansion, ensuring accuracy in scientific and geodetic applications.

3. Scientific & Optical Equipment
Invar supports telescope mirrors in observatories to maintain sharp focus as temperatures change overnight. It is also used in electron microscope stages to prevent sample drift during high-magnification imaging.

4. Telecommunications
In microwave and RF systems, Invar is used in waveguides and filters where stable physical dimensions are critical to maintaining consistent signal frequency in base stations and satellites.

5. Energy & Cryogenics
Invar is essential in LNG carrier membrane tanks, where it resists contraction at extremely low temperatures (−163°C). It is also used as a core material in high-capacity overhead power lines to reduce thermal sag under heavy electrical loads.