Imagine this: You’re designing an ultra-sensitive electronic device. Everything’s perfect—until the heat kicks in and suddenly, your once precisely aligned parts are waging a full-blown expansion war. Bolts are breaking up and your budget is sweating.

Now picture this:
An alloy so stable, even summer in Delhi can’t make it flinch.
Meet the DOMADIA™ Dilaton 41 FeNi41 Alloy, the low-key superhero of materials engineering.

Chemical Composition of Alloy UNS K94100

DOMADIA™ Dilaton 41 isn’t just another metal mix. It’s 41% Nickel, the rest Iron, and stays stable no matter the heat.

ElementContent (%)
Nickel (Ni)~41
Iron (Fe)Balance
Others≤ Trace

Key Properties and Applications:

  • Low Thermal Expansion:

UNS K94100 has a very low coefficient of thermal expansion, close to that of glass, ceramics, and silicon. This makes it ideal for applications where matching expansion rates with these materials is necessary, such as glass-to-metal seals and lead frames for electronic components. 

  • Glass-to-Metal Sealing:

It’s widely used in sealing metal parts into glass, such as in electron tubes, lamps, and microelectronic components. 

  • Electronic Components:

UNS K94100 is used in various electronic components, including lead frames for integrated circuits and vacuum devices. 

  • Thermostat and Bimetal Strips:

It’s a component in thermostatic bimetal strips due to its low expansion characteristics. 

  • Cryogenic Applications:

UNS K94100 can be used in cryogenic engineering, where dimensional stability at very low temperatures is crucial. 

  • Laser Components:

Its low expansion makes it suitable for laser components as well. 

  • Magnetic Shielding:

While not its primary function, UNS K94100, along with other materials, can be used in magnetic shielding applications.

Standards & Credentials

  • UNS K94100
  • ASTM F29 Wire
  • ASTM F30
  • DIN 17745
  • AFNOR NF A54-301

Key Properties

DOMADIA™ Dilaton 41’s standout property is its near-zero thermal expansion—especially near room temperature. But that’s not all:

PropertyValue
Coefficient of Expansion~1.5 x 10⁻⁶ /°C
Curie Temperature~230°C
Density~8.1 g/cm³
Modulus of Elasticity~138 GPa
Magnetic?Mildly, like a shy introvert at a party

Available Forms

We don’t just give you the alloy. We give you options:

Shapes Available

Technical Specifications Snapshot

SpecificationRange/Details
Material No.UNS K94100
StandardASTM F30
Forms AvailableFoils, Strips, Plates, Bars, Rods, Sheets
CTE Range~1.5 µm/m·°C (20-300°C)
Working TempCryogenic to ~500°C

Conclusion

So, why DOMADIA™ Dilaton 41?

Because it’s not just a metal—it’s a heat-defying wizard, and a solid bet when precision means everything. From microelectronics to aerospace, this alloy doesn’t just perform—it performs without flinching.

✅ Ready to Switch to Stable?

Got questions? Want a quote?
Contact us today: https://domadia.net/contact/

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