Nickel Alloys

Alloy 42


A nickel-iron controlled-expansion alloy containing 42% Nickel. It has a low and nominally constant coefficient of thermal expansion in the 85 deg F (20 deg C) to 570 deg F (300 deg C) temperature range.

Typical application: Medical, electronics, automotive industries in various applications including bi-metals thermostat strips, thermostat rods, electronic tubes, glass to metal and ceramic to metal seals.

Available in dia bar stock from up to 300mm dia

(Other forms available on request.)

Colour Code

Related Specifications

Steel Number UNS ASTM
1.3917 K94100 F30

Typical Chemical Analysis

Ni Cr Mn P S Cr Si Al Co Fe
42 .05 .80 .025 .025 .250 0.03 .02 .05 Bal

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All data provided is for information and guidance only. Information above is not for design purposes and comes without warranty or guarantee with respect to the subject matter or fitness for purpose.