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Invar 42 Controlled Expansion Alloys Nilo42 ASTM F30 UNS K94100

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Invar 42 Controlled Expansion Alloys Nilo42 ASTM F30 UNS K94100

Brand Name : AIWEN
Model Number : 4J42
Certification : ISO9001:2015
Place of Origin : China
MOQ : 30kg
Price : Negotiable
Payment Terms : T/T
Supply Ability : 500kg per week
Delivery Time : 40~45 days
Packaging Details : Plywood case
Equal grades : ASTM F30, UNS K94100, Nilo42
Spec : ASTM F30
Density : 8.11g/cm3
Standard : ASTM F30 UNS K94100
Product Name : Controlled Expansion Alloys
Model : 4J42
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Invar 42 Iron-nickel Constant Expansion Alloy Nilo42 ASTM F30 UNS K94100


Iron-nickel constant expansion alloys are a series of constant expansion alloys which can match soft glass and ceramics with different expansion coefficients in a given temperature range by adjusting nickel content. The coefficient of expansion and Curie point increase with the increase of nickel content. The alloy is widely used as a sealing structural material in the electric vacuum industry.


Invar 42 Controlled Expansion Sealing Alloy W.Nr 1.3917 ASTM F30 UNS K94100


Invar 42, also known as UNS K94100/W. Nr. 1.3917, is a binary FeNi alloy containing 42% nickel.


It has a low and nominally constant, coefficient of expansion in the range of 20-300°C (85-570°F).


Chemical composition

ElementNiMnSiCCrPSAlFe
Weight(%)41.5~42.50.80 max0.30 max0.05 max0.25 max0.025 max0.025 max0.10 maxRemainder

Applications:

  • Tooling for aerospace composites
  • Thermostat rods
  • Semiconductor lead frames
  • Thermostatic bi-metal strip
  • Glass sealing applications

Typical Thermal Expansion of Invar 42

Temperature range

Total

Expansion

Mean Linear Coefficient
°C°F10-310-6 /°C10-6 /°F
20-100
20-150
20-200
20-250
20-300
20-350
20-400
20-450
20-500
68-212
68-302
68-392
68-482
68-572
68-662
68-752
68-842
68-932
0.42
0.69
0.95
1.22
1.48
1.80
2.36
3.05
3.84
5.3
5.3
5.3
5.3
5.3
5.4
6.2
7.1
8.0
2.9
2.9
2.9
2.9
2.9
3.0
3.4
3.9
4.4

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Invar 42 Controlled Expansion Alloys Nilo42 ASTM F30 UNS K94100 Images

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