Alloy 48 (aka Pernifer 482, NILO 484, Glass Seal 481)
A controlled expansion alloy, consisting of 48% Nickel, balance Iron; used in a variety of electronic application, especially for glass and ceramic seals.
Alloy 48 Products
Ed Fagan Inc. stocks alloy 48 in a variety of forms and dimensions. Below are most of the standard stock form/sizes. If you do not see the size or form of alloy 48 that you require, please call one of our materials experts; our sales people are very knowledgeable and can assist you. We can cut, slit, shear, or center less grind alloy 48 to your exact specifications, and we also have tremendous versatility when it comes to custom sizes, packages, and unusual materials.
| Alloy 48 Rod | |
Alloy 48 Rod Diameter |
Alloy 48 Rod Diameter |
.062” Alloy 48 Rod |
.625” Alloy 48 Rod |
.140” Alloy 48 Rod |
.750” Alloy 48 Rod |
.250” Alloy 48 Rod |
1.125”Alloy 48 Rod |
.500” Alloy 48 Rod |
|
| Alloy 48 Strip/Coil Annealed | |
Alloy 48 Strip/Coil Thickness |
Alloy 48 Strip/Coil Thickness |
.001” Alloy 48 Strip/Coil |
.014” Alloy 48 Strip/Coil |
.002” Alloy 48 Strip/Coil |
.015” Alloy 48 Strip/Coil |
.003” Alloy 48 Strip/Coil |
.035” Alloy 48 Strip/Coil |
.004” Alloy 48 Strip/Coil |
.050” Alloy 48 Strip/Coil |
.005” Alloy 48 Strip/Coil |
.060” Alloy 48 Strip/Coil |
.010” Alloy 48 Strip/Coil |
.061” Alloy 48 Strip/Coil |
.013” Alloy 48 Strip/Coil |
.080” Alloy 48 Strip/Coil |
Applications
Glass to metal seals for variety of electronic tubes and hermetic devices.
Alloy 48 Properties
| Alloy 48 Physical Properties | ||
Density |
lb/cu in |
0.298 |
Specific Gravity |
|
8.25 |
Curie Temp |
°F |
880 |
|
°C |
471 |
Melting Point |
°F |
2600 |
|
°C |
1427 |
Electrical Resistivity |
Micro-ohm-cm |
49 |
|
ohm-cir mil/ft |
290 |
Thermal Conductivity |
W/cm °C |
0.13 |
|
BTU-in/sq. ft-hr- |
90 |
Specific Heat |
Cal/g- °C |
0.12 |
|
BTU/lbm- °F |
0.12 |
Thermal Expansion |
ppm / °F (75°F to 842°F) |
5.0 |
|
ppm / °C (25°C to 450°F) |
9.0 |
| Alloy 48 Mechanical Properties | ||
Tensile Strength |
ksi |
79 |
|
MPa |
545 |
Yield Strength |
ksi |
36 |
|
MPa |
248 |
Elongation |
% in 2 in. |
30 |
Typical Hardness Ann. |
Rockwell HRB |
80 |
Modules of Elasticity |
Mpsi |
23 |
|
kMPa |
159 |
| Alloy 48 Chemistry | |
maximum % unless noted |
|
Iron |
Bal |
Nominal Nickel |
48 |
Nominal Cobalt |
-- |
Carbon |
0.05 |
Silicon |
0.30 |
Sulfur |
0.025 |
Chromium |
0.025 |
| Alloy 48 Specifications | ||
ASTM F-30 |
MIL 1-23011 CL 3 |
AMS 1-23011 CL 3 |
| Alloy 48 Linear Coefficient of Thermal Expansion | |||
Degree C |
Degree C |
||
30-100 |
9.4 |
30-450 |
9.0 |
30-150 |
9.4 |
30-475 |
9.3 |
30-200 |
9.4 |
30-500 |
9.4 |
30-250 |
9.3 |
30-525 |
-- |
30-300 |
8.8 |
30-550 |
9.6 - 10.3 |
30-325 |
-- |
30-600 |
10.4 |
30-350 |
9.0 |
30-700 |
11.3 |
30-375 |
-- |
30-800 |
12.1 |
30-400 |
8.2 - 9.2 |
30-900 |
13.0 |
30-425 |
8.9 |
30-1000 |
13.9 |
ED FAGAN INC. supplies the highest quality special purpose metals and alloys for Aerospace/Aviation, Defense, Electronics, Magnetic, Medical, Lighting, Optical, Telecommunications, Ceramics, Heat Treating, and other high-technology industries.
1. Trademark Carpenter Technology Corp., Reading PA
2. Trademark ThyseenKrupp-VDM, Germany
4. Trademark Special Metals Corporation, USA
Controlled Expansion Alloys
Ed Fagan Inc. stocks a variety of similar alloys for low expansion, controlled expansion, glass-to-metal or ceramic sealing applications that may also satisfy your needs. EFI carries:Invar
Kovar
42 Alloy
42-6 Alloy
46 Alloy
48 Alloy
52 Alloy
And we also have a large selection of other types of specialty metals and alloys for high technology applications, including:
Electrical/Electronic Nickel
Soft Magnetic Alloys
Refractory Metals and Alloys
Hard to Find Materials