Optimum Spring manufactures extension, torsion and compression springs with Inconel 718 Nickel Alloy - Spring Wire Properties
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MS24585-

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Inconel 718 Nickel Alloy - Spring Wire Properties

Nickel-based alloys are especially useful spring materials to combat corrosion and to withstand both elevated and below-zero temperature application. Their nonmagnetic characteristic is important for such devices as gyroscopes, chronoscopes, and indicating instruments. These materials have high electrical resistance and should not be used for conductors of electrical current.

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Inconel 718
Nominal Chemistry
Ni52.5-%
Cr18.6-%
Fe18.5-%
Minimum Tensile Strength
psi x 103
210-250
E - Modulus of Elasticity
psi x 106
29
Design Stress % Minimum Tensile 40
G - Modulus in Torsion
psi x 106
11.2
Maximum Operating Temperature
°F
1100
Rockwell Hardness C45-50
Density
lb/in3
0.296
Shear Modulus
c GPa
11600 80.0
Method of Manufacture
Chief Uses
Special Properties
Cold drawn and precipitation hardened after fabrication. Good corrosion resistance at elevated temperature.
Equivalent or Common Trade Names
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