Invar
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Chemical Data, Mechanical Properties and Specifications for Invar.

Chemical

Nominal Chemical Range
Element Minimum Maximum
Carbon -- 0.05
Chromium -- 0.25
Cobalt -- 0.50
Iron Bal --
Manganese -- 0.50
Nickel -- 36.0
Phosphorus -- 0.020
Silicon -- 0.25
Sulfur -- 0.020

Mechanical

Typical Mechanical Properties
Temper Tensile Strength Yield Strength Elongation at Break
Annealed Bars and Strip 65 ksi 40 ksi 35.0%
Cold Rolled Strip 104 ksi 98.5 ksi 5.5%
Cold Drawn Bars 90 ksi 70 ksi 20.0%

Specs

Specifications
ASTM F1684
ASTM B753
UNS K93601