About Alloy 42
NeoNickel supplies Alloy 42 in accordance to the ASTM-F-1684 specification and is manufactured for industrial applications where a low Coefficient of Thermal Expansion (CTE) is required over a range of temperatures. The constraints of the specifications limit the Sulphur and Phosphorus content of the material for increased weldability.
Features of Alloy 42 include:
- Low Expansion Rate up to 300°C
- Readily Weldable
- Easily Machined
- Ideal for Composite Tooling
Properties
- Density:
- 8.12 g/cm³
- Melting Range:
- 1425°C - 1435°C
- Curie Temperature:
- 380°C
- Thermal Conductivity at 20/100°C:
- 10.7 W/m-K
- Modulus of Elasticity at 20°C:
- 148 GPa
- Coefficient of Thermal Expansion:
- 30 – 300°C:
- 4.0 – 4.7 (10-6/°C)
- 30 – 450°C:
- 6.7 – 7.4 (10-6/°C)
Applications
Alloy 42 can be used in a variety of applications including:
- Cryogenic components
- Glass to metal and ceramic to metal seals
- Semiconductor packages
- Tooling and dies for composite forming
- Electronic tubes
- CRT electron guns
- Microelectronic components
- Thermostat rods
- Vacuum devices
- Electric industrial lamps
- Bi-metal temperature switches
- Liquid Gas Storage tanks