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All About Invar 36

The ease of operation, repair, and adaptability of the Invar 36 Round Bars lend it to widespread industrial application, withstanding pressures up to 1000 bar and temperatures up to 752 °F (400 °C), depending on the design and raw materials used. Sizes range from 6mm to 90mm on average (different sizes available as per requirements). The corrosion resistance and durability of  ASTM F1684 Invar 36 Round Bars make them superior to other Invar 36 Round Bars on the market. In the chemical and pharmaceutical industries, our Invar 36 Round Bar is widely utilized.

Nickel Alloy 36 Round bar is a nickel-iron alloy with a low coefficient of thermal expansion, about one-tenth that of carbon steel. It contains 36 percent nickel and has a rate of thermal expansion around one-tenth that of carbon steel. At temperatures below its Curie point, Invar 36 Flat Bar is magnetic; at temperatures above, it is non-magnetic. Invar 36 Polished Bar is a common alloy with minimal expansivity that can withstand temperatures up to 400 degrees Fahrenheit. At cryogenic temperatures, this nickel-iron alloy Invar 36 Hexagonal Bar retains good strength and hardness. Because Invar 36 Black Bar has a coefficient of thermal expansion (CTE) that is close to zero, it has become a popular choice in many industries.

Applications of Invar 36

At temperatures up to 400°F, Invar is a notional 36 percent nickel-iron alloy with a rate of thermal expansion one-tenth that of carbon steel. This controlled expansion alloy is utilized in applications like measurement and electrical equipment where temperature-induced dimensional changes must be kept to a minimum. Here are some instances of Invar uses that have profited from the alloy’s superior characteristics.

  • Clock balance wheels
  • Containers and transfer lines for LNG tankers
  • CRT applications: shadow masks, deflection clips, and electron gun components
  • Deflection clips
  • Dimensionally stable instruments and optical devices
  • Echo boxes and filters for mobile telephones
  • Electrical circuit breakers
  • Electrical transformers
  • Electron gun components
  • Magnetic shielding
  • Metrology devices
  • Optical benches
  • Pendulum clocks
  • Positioning devices
  • Precision condenser blades
  • Radar and microwave cavity resonators
  • Scientific instruments

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