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Alloy 52 foil / N14052 Alloy 52 contains 52% nickel and 48% iron and is widely used in the telecommunications industry. It also finds application in a wide variety of electronic applications, especially for glass seals. Also known as: Pernifer 502, NILO 50, Glass Seal 521 UNS K95050 N14052 ASTM F30
Alloy 52 is a ferronickel alloy with nickel content of 50.50%. It is used for glass metal sealing. When the temperature is 565 ° C, the thermal expansion rate of the alloy remains unchanged
Chemical composition:
Carbon: less than 0.01%
Manganese: 0.30%
Silicon: 0.20%
Nickel: 50.50%
Iron: allowance
Physical property:
Specific gravity: 8.30
Density: 0.30 lb / in3
Average specific heat: 0.12btu/lb/ ° f
Average thermal expansion coefficient: 77-842 ° F, annealed, 5.4x10-6in/in/ ° f
Thermal conductivity: 68-212 ° F, 97.00btu-in/hr/ft2 / ° f
Modulus of elasticity (E): 23.0x103ksi
Resistance: @ 70 ° F, 258.0 ohm CIR mil / ft
Temperature coefficient of resistance:
-67-77°F, 19.4X10-4 ohm/ohm/°F
77-221°F, 22.5X10-4 ohm/ohm/°F
Fold back temperature: 1050 ° f
Melting distance: 2600 ° f
Thermal expansion curve - ordinary glass and ceramics
Applications
Glass to metal seals for electronic tubes
Automotive and industrial lamps
Specialty hermetic devices
| Alloy Type | Trade Name | UNS No. | Standard | Forms | |||
| Rod | Strip | Wire | Sheet | ||||
| Ni29Co17 | Kovar | K94610 | ASTM F15 | yes | yes | yes | yes |
| FeNi36 | Invar 36 | K93603 | ASTM 1684 | yes | yes | yes | yes |
| FeNi32Co5 | Super-invar 32-5 | K93500 | ASTM F1684 | yes | yes | yes | yes |
| FeNi33Co17 | Ni33Co17 | √ | YB/T5234-94 | yes | yes | yes | yes |
| FeNi27Co25 | Ceramvar | F1466 | ASTM F1466 | yes | yes | yes | yes |
| Fe28Cr | Alloy 27 | K92801 | ASTM F256 | yes | yes | yes | |
| Fe42Ni6Cr | Alloy 426 | K94760 | ASTM F31 | yes | yes | yes | |
| Fe42Ni | Alloy 42 | K94100 | ASTM F30 | yes | yes | yes | yes |
| Fe45Ni | Alloy45 | √ | YB/5235-2005 | yes | yes | yes | |
| Fe46Ni | Alloy46 | K94600 | ASTM F30 | yes | yes | yes | yes |
| Fe50Ni | Alloy52 | K95050 | ASTM F30 | yes | yes | yes | yes |
