About Alloy
Alloy 48 (Nilo 48,UNS K94800/Nilo 48) is a nickel-iron controlled-expansion alloy containing 48% nickel. Alloy 48 (Nilo 48 coefficient of thermal expansion matches that of soft lead and soda lime glasses therefore Alloy 48's main use is for glass to metal seals in soft lead or soda lime type glasses. Alloy 48 is also used for thermostats in industrial applications up to 450°C (840°F).
Product Form
Sheet, Strip, Rod, Bar, Tubing and Wire: ASTM F30
Chemical Composition
|
Iron, Fe |
49 |
|
Nickel, Ni |
48 |
|
Cobalt, Co |
1 |
|
Manganese, Mn |
0.80 |
|
Silicon, Si |
0.30 |
|
Chromium, Cr |
0.25 |
|
Aluminum, Al |
0.10 |
|
Carbon, C |
0.050 |
|
Phosphorous, P |
0.025 |
|
Sulfur, S |
0.025 |
Property
|
Material |
Ultimate Tensile Strength |
Yield Strength 0.2 % |
Elongation (%) |
||
|
psi |
MPa |
psi |
MPa |
||
|
Alloy 48 |
75,000 |
520 |
38,000 |
260 |
43 |
Application
The NILO 48 alloy is used in the following applications:
Industrial Thermostat rods that operate up to 450°C (840°F)
Glass-to-metal seals for radio valves, incandescent electric lamps.
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