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|
Grade |
W. Nr. |
UNS |
Nickel Alloys |
|
Invar 42 |
1.3917 |
K94100 |
Invar 42 is a special-purpose alloy known for controlled thermal expansion. It maintains dimensional stability during temperature changes and helps reduce stress, cracking and mismatch when used with other materials. Its value is based on reliable performance in precision parts where tight tolerances and controlled expansion are required.
|
Ni % |
Fe % |
C % |
S % |
Mn % |
Si % |
Cr % |
Al % |
Co % |
P % |
|
41.00 – 42.00 |
Balance |
0.05 max. |
0.025 max. |
0.80 max. |
0.30 max. |
0.25 max. |
0.15 max. |
1.00 max. |
0.025 max. |
|
Material form |
Rp0.2, MPa |
Rm, MPa |
Elong., % |
Hardness, HB |
Density, g/cm³ |
|
Sheet / Strip |
≈ 250 |
≈ 490 |
≈ 43 |
≈ 140 HB max. |
8.11 |
Invar 42 is mainly used in electronics, semiconductor, glass-to-metal and ceramic-to-metal sealing applications. Typical products include lead frames, hermetic package parts, pin/grommet feedthroughs, vacuum device components, lamp connection parts and precision thermostat-bimetal components.
Invar 42 maintains low and controlled thermal expansion especially from room temperature up to approximately 300 °C. It is preferred for thermal expansion compatibility and dimensional stability rather than high-temperature strength. In annealed condition, it offers good formability, pressability and machinability; it can also be welded with suitable filler metal and controlled process parameters.
Invar 42, NILO® 42, Alloy 42, FeNi42, Ni42, 1.3917, UNS K94100
|
Form |
ASTM |
AMS |
Note |
|
Sheet |
ASTM F30, ASTM B753 |
SAE AMS-I-23011 Class 5 |
Reference for sheet/strip/coil used in electronic, lead-frame and hermetic sealing components. |
Special Metals — NILO® alloy 42
VDM Metals — VDM® Alloy 42 / Pernifer 40
Note: The information provided in this data sheet is for informational purposes only; no liability is accepted.
