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

Standard lengths of 2000 mm up to 6000 mm. Cut to size on request (tolerance +2/-0 mm). 

        Ø

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

Dimensions: widths 1000/1220/1500 mm, lengths 2000/2500/3000 mm.

Thickness:

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              
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