Elgiloy Wire for Custom Springs & Custom Wire Forms

Please note that we do not sell Elgiloy or any other materials in raw form. Elgiloy wire is a material option for custom springs, etc., manufactured by Peninsula Spring.

Elgiloy is a “super alloy” composed of cobalt-chromium-nickel (Co-Cr-Ni). It offers a combination of high strength, high ductility, and good mechanical properties, and can be age-hardened. Custom Elgiloy springs and custom Elgiloy wire forms are ideal for applications requiring high corrosion resistance and/or low relaxation at temperatures up to 600°F (316°C). Elgiloy also exhibits spring properties very similar to 17-7 PH stainless steel. 

To discuss the material requirements of your custom manufacturing project, contact Peninsula Spring today.

Nominal Chemical & Physical Properties

• Ni: 15.50%
• Co: 40.00%
• Cr: 20.00%
• Mo: 7.00%
• Minimum tensile strength: psi x 10³ 220-350
• Design stress % minimum tensile: 45
• Modulus of elasticity: psi x 10⁶ 29.5
• Modulus in torsion: psi x 10⁶ 11.5
• Maximum operating temperature: 600 °F (316°C)
• Rockwell hardness: C38-55

Heat Treating Elgiloy

1. Heat to 980°F/527°C (±10°F)
2. Hold for 5 hours
3. Air-cool to room temperature

Manufacturing Custom Elgiloy Springs & Wire Forms

Elgiloy is cold drawn and precipitation hardened after fabrication. It is suitable for freshwater applications, industrial and marine atmospheres, and mild chemical and oxidizing environments. Elgiloy alloy does very well in high-temperature environments and exerts spring properties similar to 17-7 PH stainless steel.

Common Trade Names

• Phynox
• UNS R30003
• ASTM F1058
• AMS 5833 

Contact Us for Elgiloy Springs & Elgiloy Wire Forms

Contact Peninsula Spring to discuss your custom requirements. We look forward to working with you!