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Nilo 42 Controlled Expansion Sealing Alloy W.Nr 1.3917 ASTM F30 UNS K94100
NILO 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
| Element | Ni | Mn | Si | C | Cr | P | S | Al | Fe |
| Weight(%) | 41.5~42.5 | 0.80 max | 0.30 max | 0.05 max | 0.25 max | 0.025 max | 0.025 max | 0.10 max | Remainder |
Applications:
Typical Thermal Expansion of NILO 42
| Temperature range |
Total Expansion |
Mean Linear Coefficient | ||
| °C | °F | 10-3 | 10-6 /°C | 10-6 /°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 |