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INCOLOY alloy 903

Overview

INCOLOY® alloy 903(UNS N19903) is an agehardenable nickel-iron-cobalt alloy whose outstanding characteristics are a constant low coefficient of thermal expansion, a constant modulus of elasticity, and high strength.

Application

INCOLOY® alloy 903‘s characteristics make it an excellent candidate for applications such as rocket-engine thrust chambers, steam-turbine bolts, springs, gage blocks, and ordnance hardware

Chemical Composition (%)

Nickel

Cobalt

Aluminum

Titanium

Niobium

Iron

Balance*

Reference to the ‘balance’ of an alloy’s composition does not guarantee this is exclusively of the element mentioned, but that it predominates and others are present only in minimal quantities.

Physical Properties

Density

Melting Points

Specific Heat

Tensile Modulus

1318-1393°C

442J/kg.°C(50°C)

Our alloy 903bar, pipe, plate, round rod, wire, tube constant low coefficient of thermal expansion, which makes it an excellent candidate for applications such as rocket-engine thrust chambers, steam-turbine bolts, springs, gage blocks, and ordnance hardware.



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