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Controlled Expansion Alloys

We offer Controlled Expansion Alloys like Invar 36,Kovar F15,Nilo 42,Nilo 48
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Invar 36

Invar 36
 
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Approx. Rs 4,600 / Kilogram
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Product Details:
Typesheets, Rods
MaterialInvar,kovar
Surface FinishBright
Shaperound,plate+
Alloy CompositionfeNi36
Sizeall
GradeInvar 36
Colorsteel
Density8.05
Usage/ApplicationElectrical Switchgear

With a team of highly skilled engineers and updated machinery, we are offering a wide range of Invar 36 and Kovar Alloys. These kovar alloys are manufactured with the help of modern techniques using utmost quality material. Offered kovar alloys are thoroughly examined on different quality parameters for make certain its superiority at our end. The offered kovar alloys are available at pocket friendly price from us.

Features:

  • Longer life
  • Rust free
  • Reliable

We can supply NICKEL Alloys from "AUERHAMMER METALLWERK GmbH, Germany" in any forms like STRIPS & FOILS.

  • Stainless Steel Foils
  • Soft Magnetic Nickel Iron
  • Glass Sealing and Expansion Alloys
  • Nickel Copper / CuproNickel
  • Nickel with Chrome or Manganese
  • Nickel with Beryllium

Additional Information:
  • Pay Mode Terms: L/C (Letter of Credit),T/T (Bank Transfer),D/P,D/A,Other
  • Port of Dispatch: Mumbai
  • Delivery Time: Ready
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Kovar ASTM F15

Kovar ASTM F15
 
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Approx. Rs 4,800 / Kilogram
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Product Details:
TypeRods, sheets
MaterialNickel Cobalt Iron Alloy
Surface Finishbright
Shapesheets,rods
Alloy CompositionNi 29,Co 17 Balance Fe
GradeASTM F15
Density8.36
Usage/ApplicationMetal to Glass Sealing

With a team of highly skilled engineers and updated machinery, we are offering a wide range of  Kovar Alloys. These kovar alloys are manufactured with the help of modern techniques using utmost quality material. Offered kovar alloys are thoroughly examined on different quality parameters for make certain its superiority at our end. The offered kovar alloys are available at pocket friendly price from us.

Kovar was invented to meet the need for a reliable glass-to-metal seal, which is required in electronic devices such as light bulbs, vacuum tubes, cathode ray tubes, and in vacuum systems in chemistry and other scientific research. Most metals cannot seal to glass because their coefficient of thermal expansion is not the same as glass, so as the joint cools after fabrication the stresses due to the differential expansion rates of the glass and metal cause the joint to crack.

Kovar not only has thermal expansion similar to glass, but its nonlinear thermal expansion curve can often be made to match a glass, thus allowing the joint to tolerate a wide temperature range. Chemically, it bonds to glass via the intermediate oxide layer of nickel(II) oxide and cobalt(II) oxide; the proportion of iron oxide is low due to its reduction with cobalt. The bond strength is highly dependent on the oxide layer thickness and character.[4][6] The presence of cobalt makes the oxide layer easier to melt and dissolve in the molten glass. A grey, grey-blue or grey-brown color indicates a good seal. A metallic color indicates lack of oxide, while black color indicates overly oxidized metal, in both cases leading to a weak joint.[2]

The name Kovar is often used as a general term for Fe–Ni alloys with these particular thermal expansion properties. The related particular Fe–Ni alloy Invar exhibits minimum thermal expansion.



Application:Glass to Metal sealing
We can supply NICKEL Alloys from "AUERHAMMER METALLWERK GmbH, Germany" in any forms like STRIPS & FOILS.

Additional Information:
  • Production Capacity: 10 Tons/month
  • Delivery Time: 30 Days
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Find UsKairav Domadia (Proprietor) Dali Electronics
No. 8/A, Haroon Building, First Floor, 190, Shamaldas Gandhi Marg, Princess Street, Near Marine Lines Station, Kalbadevi, Mumbai - 400002, Maharashtra, India
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