A controlled expansion alloy, consisting of 42% Nickel, balance Iron; used in a wide variety of electronic application, lead frames, especially for glass and ceramic seals.
Alloy 42 Products
Bolaibao (Suzhou) Metal Products Co., Ltd. stocks alloy 42 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 42 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 42 to your exact specifications, and we also have tremendous versatility when it comes to custom sizes, packages, and unusual materials.
Alloy 42 Rod -- Made to Your Custom Size
| Alloy 42 Sheet Annealed |
| Alloy 42 Sheet Thickness | Alloy 42 Sheet Thickness |
| .020” Alloy 42 Sheet | .050” Alloy 42 Sheet |
| .030” Alloy 42 Sheet | .060” Alloy 42 Sheet |
| .040” Alloy 42 Sheet | .100” Alloy 42 Sheet |
| Alloy 42 Plate Annealed |
| Alloy 42 Plate Thickness |
| .270” Alloy 42 Plate |
| Alloy 42 Strip/Coil Annealed |
| Alloy 42 Strip/Coil Thickness | Alloy 42 Strip/Coil Thickness |
| .010” Alloy 42 Strip/Coil | .030” Alloy 42 Strip/Coil |
| .020” Alloy 42 Strip/Coil | .040” Alloy 42 Strip/Coil |
Applications
Glass to metal seals for a wide variety of electronic tubes, hermetic packages, and automotive and industrial lamps.
Alloy 42 Properties
| Alloy 42 Physical Properties |
| Density | lb/cu in | 0.293 |
| Specific Gravity |
| 8.12 |
| Curie Temp | °F | 716 |
| °C | 380 |
| Melting Point | °F | 2600 |
| °C | 1427 |
| Electrical Resistivity | Micro-ohm-cm | 68 |
| ohm-cir mil/ft | 400 |
| Thermal Conductivity | W/cm °C | 0.11 |
| BTU-in/sq. ft-hr- | 74.5 |
| Specific Heat | Cal/g- °C | 0.12 |
| BTU/lbm- °F | 0.12 |
| Thermal Expansion | ppm / °F (75°F to 842°F) | 3.9 |
| ppm / °C (25°C to 450°F) | 7.0 |
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| Alloy 42 Mechanical Properties |
| Tensile Strength | ksi | 82 |
| MPa | 566 |
| Yield Strength | ksi | 34 |
| MPa | 235 |
| Elongation | % in 2 in. | 30 |
| Typical Hardness Ann. | Rockwell HRB | 80 |
| Modules of Elasticity | Mpsi | 21.5 |
| kMPa | 148 |
| Alloy 42 Chemistry |
| maximum % unless noted |
| Iron | Bal |
| Nominal Nickel | 41 |
| Nominal Cobalt | -- |
| Carbon | 0.05 |
| Silicon | 0.30 |
| Sulfur | 0.025 |
| Chromium | 0.025 |
| Alloy 42 Specifications |
| ASTM F-30 | MIL 1-23011 CL 5 | AMS 1-23011 CL 5 |
| Alloy 42 Linear Coefficient of Thermal Expansion |
| Degree C |
| Degree C |
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| 30-100 | 4.8 | 30-450 | 6.7 - 7.4 |
| 30-150 | 4.6 | 30-475 | -- |
| 30-200 | 4.5 | 30-500 | 8.0 |
| 30-250 | 4.5 | 30-525 | -- |
| 30-300 | 4.0 - 4.7 | 30-550 | 8.8 |
| 30-325 | 4.7- | 30-600 | 9.5 |
| 30-350 | 5.0 | 30-700 | 10.5 |
| 30-375 | 5.5 | 30-800 | 11.4 |
| 30-400 | 6.0 | 30-900 | 12.3 |
| 30-425 | -- | 30-1000 | 13.2 |
| Model | GB | ASTM | DIN | BS | AFNOR |
| New grades | Old grades |
| 4J36（Invar 36) |
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| UNS K93600 | W.Nr.1.3912 | X1NiCrMoCu | Fe-Ni36 |
| Kovar(Alloy K) |
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| UNS K94610 | 1.3981 |
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| Nilo 42(Alloy 42) |
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| UNS K94100 | 1.3917 |
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What Makes Us Unique?
1. We have professional production line.
2. We have professional certification and test report.
3. We have large amount of stock.
