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Special Metals NILO® Alloy 48 Controlled-Expansion Alloy
| Category | Metal , Nonferrous Metal , Nickel Alloy , Superalloy , Iron Base |
| Manufacturer | Special Metals (includes the former Inco Alloys International Inc.) |
| Trade Name | NILO® |
| Port | Shanghai port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | Special Metals NILO® Alloy 48 Controlled-Expansion Alloy.pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
Inflection point 460°C. A nickel-iron controlled-expansion alloy containing 48% nickel. Its coefficient of thermal expansion is designed to match that of soft lead and soda-lime glasses. The alloy also has a high inflection point. Used for glass-to-metal seals in radio valves and incandescent electric light bulbs and for industrial thermostats that operate at temperatures up to 840°F (450°C). Standard product forms are round, flats, tube, strip, and wire.Data provided by the manufacturer, Special Metals.
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 8.20 g/cc | 0.296 lb/in³ |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Tensile Strength, Ultimate | 520 MPa | 75400 psi | Annealed prior to test |
| 470 MPa @Temperature 300 °C |
68200 psi @Temperature 572 °F |
Annealed prior to test | |
| Tensile Strength, Yield | 260 MPa @Strain 0.200 % |
37700 psi @Strain 0.200 % |
Annealed prior to test |
| 160 MPa @Strain 0.200 %, Temperature 300 °C |
23200 psi @Strain 0.200 %, Temperature 572 °F |
Annealed prior to test | |
| Elongation at Break | 42 % | 42 % | Annealed prior to test. |
| 43 % @Temperature 300 °C |
43 % @Temperature 572 °F |
Annealed prior to test. |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 8.50 µm/m-°C @Temperature 20.0 - 100 °C |
4.72 µin/in-°F @Temperature 68.0 - 212 °F |
|
| 8.30 - 9.30 µm/m-°C @Temperature 20.0 - 400 °C |
4.61 - 5.17 µin/in-°F @Temperature 68.0 - 752 °F |
||
| Thermal Conductivity | 16.7 W/m-K | 116 BTU-in/hr-ft²-°F | |
| Melting Point | 1450 °C | 2640 °F |
| Component Elements Properties | Metric | English | Comments |
|---|---|---|---|
| Aluminum, Al | <= 0.10 % | <= 0.10 % | |
| Carbon, C | <= 0.050 % | <= 0.050 % | |
| Chromium, Cr | <= 0.25 % | <= 0.25 % | |
| Cobalt, Co | <= 1.0 % | <= 1.0 % | |
| Iron, Fe | 49 % | 49 % | As remainder |
| Manganese, Mn | <= 0.80 % | <= 0.80 % | |
| Nickel, Ni | 48 % | 48 % | nominal; adjustable to meet expansion requirements |
| Phosphorous, P | <= 0.025 % | <= 0.025 % | |
| Silicon, Si | <= 0.30 % | <= 0.30 % | |
| Sulfur, S | <= 0.025 % | <= 0.025 % |
| Electrical Properties | Metric | English | Comments |
|---|---|---|---|
| Electrical Resistivity | 0.0000470 ohm-cm | 0.0000470 ohm-cm |
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