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Alloy 42

For best performance of low-expansion properties, up to 300°C, look no further than Alloy 42

Alloy 42 has been specifically manufactured for composite tooling and exhibits a low thermal expansion from cryogenic temperatures up to 300°C

Inventory

PRODUCT FORM SIZE FROM SIZE TO
Alloy 42 Sheet and Plate 6.35 MM 203.2 MM
Alloy 42 Welding Wire 1.14 MM 3.18 MM

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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

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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

Chemical Analysis

C Mn Si Ni Fe S P
% 0.02 0.45 0.08 41 Balance 0.002 0.008

Typical Thermal Expansion

Alloy 42 versus Alloy 36 Thermal Expansion Chart

Specifications

UNS Number:
K94100
Werkstoff Number:
1.3917
Other:
DIN 17744, AFNOR NF A54-301
ASTM:
F30, B753.
Download the Alloy 42 Data Sheet Download

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