NILO® Alloy 42

1.3917  /  UNS K94100

A binary nickel-iron alloy containing 42% nickel.  It has a low coefficient of thermal expansion (CTE) over the temperature range 20-300°C.  Due to this stable CTE it is widely used as tooling for the production of carbon-fibre composites for aerospace and autosport applications.  It is used for glass sealing applications in electronic components and vacuum devices, for thermostat rods and in thermostatic bimetallic strip.  

Stock program

Bars

  • 2.50 mm
  • 4.75 mm
  • 6.35 mm
  • 9.52 mm
  • 12.00 mm
  • 16.00 mm
  • 20.00 mm
  • 25.40 mm
  • 31.75 mm
  •  

Sheets / Plates

  • 0.25 mm
  • 0.50 mm
  • 0.63 mm
  • 1.00 mm
  • 1.50 mm
  • 2.03 mm
  • 3.18 mm
  • 4.76 mm
  • 6.35 mm
  • 9.52 mm
  • 12.70 mm
  • 15.88 mm
  • 19.05 mm
  • 25.40 mm
  • 38.10 mm
  •  

Downloads

Datasheet Alloy 42 (EN)
Limiting
Fe   Balance
Ni¹   42.00 %
Co max. 1.00 %
Mn max. 0.80 %
Si max. 0.30 %
Cr max. 0.25 %
Al max. 0.15 %
C max. 0.05 %
S max. 0.035 %
P max. 0.025 %

¹ Nominal value; adjusted to meet expansion requirements.

Density
g/cm³   8.11
lb/in³   0.293