Alloy 42-6 (aka Glass Seal 42-61)
A controlled expansion alloy, consisting of 42% Nickel, 6% Chromium, balance Iron; used in a wide variety of electronic applications, especially for glass seals.
Alloy 42-6 Products
Because Alloy 42-6 is not a commonly used alloy, EFI does not maintain a regular stock of this alloy in the same variety of forms and conditions that we do for the other families of controlled and low expansion alloys. If you require Alloy 42-6, please call us. We may very well have what you are looking for in stock, and if we don’t, we can certainly source it for you.
Applications
Glass to metal seals for a variety of electronic tubes and CRT tubes.
Alloy 42-6 Properties
| Alloy 42-6 Physical Properties | ||
Density |
lb/cu in |
0.293 |
Specific Gravity |
|
8.12 |
Curie Temp |
°F |
560 |
|
°C |
293 |
Melting Point |
°F |
2600 |
|
°C |
1427 |
Electrical Resistivity |
Micro-ohm-cm |
97 |
|
ohm-cir mil/ft |
570 |
Thermal Conductivity |
W/cm °C |
0.13 |
|
BTU-in/sq. ft-hr- |
87 |
Specific Heat |
Cal/g- °C |
0.12 |
|
BTU/lbm- °F |
0.12 |
Thermal Expansion |
ppm / °F (75°F to 842°F) |
5.9 |
|
ppm / °C (25°C to 450°F) |
10.6 |
| Alloy 42-6 Mechanical Properties | ||
Tensile Strength |
ksi |
80 |
|
MPa |
552 |
Yield Strength |
ksi |
40 |
|
MPa |
276 |
Elongation |
% in 2 in. |
30 |
Typical Hardness Ann. |
Rockwell HRB |
80 |
Modules of Elasticity |
Mpsi |
23 |
|
kMPa |
159 |
| Alloy 42-6 Chemistry | |
maximum % unless noted |
|
Iron |
Bal |
Nominal Nickel |
42 |
Nominal Cobalt |
-- |
Carbon |
0.07 |
Silicon |
-- |
Sulfur |
0.025 |
Chromium |
5.6 nom. |
| Alloy 42-6 Specifications | |
ASTM F-30 |
MIL 1-23011 CL 6 |
| Alloy 42-6 Linear Coefficient of Thermal Expansion | |||
Degree C |
Degree C |
||
30-100 |
-- |
30-450 |
10.6 |
30-150 |
-- |
30-475 |
-- |
30-200 |
-- |
30-500 |
11.2 |
30-250 |
-- |
30-525 |
-- |
30-300 |
8.2 |
30-550 |
11.7 |
30-325 |
-- |
30-600 |
12.2 |
30-350 |
8.5-9.2 |
30-700 |
13.0 |
30-375 |
-- |
30-800 |
13.7 |
30-400 |
10.0 |
30-900 |
14.6 |
30-425 |
9.7-10.4 |
30-1000 |
15.4 |
Underscored face values are the limits specified in MIL-I-23011C
|
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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
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