Optimum Spring manufactures extension, torsion and compression springs with Inconel X-750 Nickel Alloy - Spring Wire Properties
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Inconel X-750 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 X-750
AMS 5698, 5699
Nominal Chemistry
Minimum Tensile Strength
psi x 103
No.IT 155 min.
Spg.T 190-230
E - Modulus of Elasticity
psi x 106
Design Stress % Minimum Tensile 40
G - Modulus in Torsion
psi x 106
Maximum Operating Temperature
Rockwell Hardness C34-39
Shear Modulus
c GPa
11600 80.0
Method of Manufacture
Chief Uses
Special Properties
INCONEL X-750 is a non-magnetic nickel-chromium alloy similar to INCONEL 600 but made precipitation hardenable by additions of aluminum and titanium. The alloy has good resistance to corrosion along with high tensile and creep-rupture properties at temperatures to about 1100°F (700°C). It is widely used for high temperature conditions but is not as strong as Nimonic 90. INCONEL X-750 has excellent resistance to chloride ion stress-corrosion cracking. The alloy has similar corrosion resistance to INCONEL 600 in many media. This material is not suited for extension springs requiring initial tension.
Equivalent or Common Trade Names
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