ASTM F30 Certified Nilo 42 Alloy 42
Description:
A nickel-iron controlled-expansion alloy containing 42% nickel. It has a low and nominally constant coefficient of thermal expansion from room temperature to about 570°F (300°C). Used for semiconductor lead frames in integrated circuits, bi-metal thermostat strip, thermostat rods, for ceramic-to-metal seals with alumina ceramics, and various glass-to-metal seals such as the core of copper-clad wire for sealing into glass envelopes of electric bulbs, radio valves, television tubes, and fluorescent lights.
FeNi42 (for example NILO alloy 42), has a nickel content of 42% and α ≈ 5.3 ppm/°C which matches that of silicon and therefore is widely used as lead frame material for electronic components, integrated circuits, etc.
Limiting Chemical Composition (%):
| Concent | C | P | S | Mn | Si | Al | Co | Ni | Fe |
| Min | 41.5 | ||||||||
| Max | 0.05 | 0.020 | 0.020 | 0.80 | 0.30 | 0.10 | 1.0 | 42.5 | Balance |
Average Coefficient of Linear Expansion ā/(10-6/K):
| 5.6 | 4.9 | 4.8 | 5.9 | 6.9 | 7.8 | 9.2 |
| 20～100℃ | 20～200℃ | 20～300℃ | 20～400℃ | 20～450℃ | 20～500℃ | 20～600℃ |
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.
Forms:
We can supply these products in all forms including wire, ribbon, strip, sheet and foil. You also can send your custom Dimensions and Tolerances by email or phone us.
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E-mail: david@brilliance-alloy.com
Postal Code: 213131
Address: Longfu Town, Xinbei District, Changzhou City, Jiangsu Province, China
Website: www.brilliance-alloy.com
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