Alloy 42

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