EFINEA is the unsurpassed leader in supplying controlled expansion, nickel-iron alloys to the industry. Below you will find pertinent material characteristics to aide in your evaluation of Alloy 42. Tables include average linear coefficient of thermal expansion, physical and mechanical properties, chemistry, and specifications for this alloy.
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For an EFINEA Alloy 42 data sheet, or any other Controlled Expansion Alloy data sheets, please go to the Data Sheets section in our Technical Library.
Alloy 42 Average Linear Coefficient of Thermal Expansion µm/m • °C |
|||
|---|---|---|---|
| Temperature Range °C | UNS K94100 | Temperature Range °C | UNS K94100 |
| 30 to 300 | 4.0 to 4.7* | 30 to 700 | 10.5 |
| 30 to 400 | 6.0 | 30 to 800 | 11.4 |
| 30 to 450 | 6.7 to 7.4* | 30 to 900 | 12.3 |
| 30 to 500 | 7.9 | 30 to 1000 | 13.2 |
| 30 to 600 | 9.6 | ||
| Source: ASTM F30, Table X1.1, UNS K94100; *tested range per ASTM F30, Table 2 | |||
To compare the linear coefficient of thermal expansion across our line of controlled expansion glass and sealing alloys, please refer to the Thermal Expansion Table.
Alloy 42 Typical Physical Properties | ||
|---|---|---|
| Density | lb/cu in | 0.293 |
| Specific Gravity | 8.12 | |
| Curie Temp | °F | 716 |
| °C | 380 | |
| Melting Point | °F | 2600 |
| °C | 1425 | |
| Electrical Resistivity | ohm-cir mil/ft | 430 |
| Microhms-cm | 71 | |
| Thermal Conductivity | BTU-in/sq. ft-hr-°F | 74.5 |
| W/cm °C | 0.11 |
|
| Specific Heat | BTU/lb °F | 0.12 |
| Source: ASTM F30, 42 Alloy | UNS K94100; CarTech Glass Sealing 42 Data Sheet v. 7.1.90 | ||
Alloy 42 Typical Mechanical Properties | ||
|---|---|---|
| Tensile Strength | ksi | 75 |
| MPa | 517 | |
| Yield Strength | ksi | 40 |
| MPa | 276 | |
| Elongation | % in 2 in. | 30 |
| Hardness Ann. | Rockwell B | 76 |
| Modulus of Elasticity | ksi | 21.5 x 103 |
| Source: CarTech Glass Sealing 42 Data Sheet v. 7.1.90; Material in the annealed condition. | ||
Alloy 42 Chemistry | |
|---|---|
| Nickel, nominal | 41.00 |
| Manganese, max. | 0.80 |
| Silicon, max. | 0.30 |
| Carbon, max. | 0.05 |
| Chromium, max. | 0.25 |
| Phosphorus, max. | 0.025 |
| Sulfur, max. | 0.025 |
| Cobalt, max. | * |
| Aluminum, max. | 0.10 |
| Iron | Remainder |
| *Cobalt is present as an incidental element and shall be reported separately. | |
| Source: ASTM F30 | |
Alloy 42 Specifications | |||
|---|---|---|---|
| ASTM F30 | MIL-I-23011 CL 5 | AMS 1-23011 CL 5 | UNS K94100 |
For additional information on specifications of the materials distributed by EFINEA, please visit the websites of the international organizations that develop and publish technical standards: ASTM International and ASM International.