Precision Nickel Alloy 42 4j42 42K Invar 42 Foil Strip Tape Lead Frame Expansion
Brand Name:HUONA
Certification:ISO9001 SGS
Model Number:STRIP
Minimum Order Quantity:1KG
Delivery Time:A WEEK
Payment Terms:T/T
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Precision nickel alloy 42 4j42 42K invar 42 foil strip tape lead
frame expansion Feni glass sealing
- UNS K94100, W.Nr. 1.3917
- ASTM F 29 (Wire)
- ASTM F 30 (Sheet, strip, rod, bar, tubing and wire)
- DIN 17745, AFNOR NF A54-301 (Composition)
Alloy 42 is a 41% nickel-iron controlled expansion alloy which has
been used in a wide variety of glass-to-metal sealing applications.
While the expansion properties of this alloy most closely match
1075 glass, it has also been used in seals for the 0120 and 0010
glasses. It may also be used with hard glasses if a thin edged
tubular seal is used. For seals that are not hydrogen annealed
prior to sealing, a variation of this alloy containing small
additions fo titanium, Glass Sealing 42 Gas-Free, has been used to
promote gas-free sealing characteristics.
Applications
Alloy 42 has been used for the glass-to-metal seals in electronic
tubes, automotive and industrial lamps, transformer and capacitor
bushings and other glass-to-metal and ceramic-to-metal
applications.
CHEMICAL COMPOSITION
| Element | Min | Max |
| Carbon | -- | 0.05 max |
| Nickel | -- | 41.0 |
| Iron | Balance | |
| Silicon | -- | 0.20 |
| Manganese | -- | 0.40 |
Thermal Expansion Properties
| Temperature Range | Total Expansion | Mean Linear Coefficient | ||
|---|---|---|---|---|
| °C | °F | 10-3 | 10-6/°C | 10-6/°F |
| 20-100 | 68-212 | 0.42 | 5.3 | 2.9 |
| 20-150 | 68-302 | 0.69 | 5.3 | 2.9 |
| 20-200 | 68-392 | 0.95 | 5.3 | 2.9 |
| 20-250 | 68-482 | 1.22 | 5.3 | 2.9 |
| 20-300 | 68-572 | 1.48 | 5.3 | 2.9 |
| 20-350 | 68-662 | 1.80 | 5.4 | 3.0 |
| 20-400 | 68-752 | 2.36 | 6.2 | 3.4 |
| 20-450 | 68-842 | 3.05 | 7.1 | 3.9 |
| 20-500 | 68-932 | 3.84 | 8.0 | 4.4 |
Precision Nickel Alloy 42 4j42 42K Invar 42 Foil Strip Tape Lead Frame Expansion
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