Elgiloy®

UNS R30003
W.Nr 2.4711

Applications

Springs, torsion bars, seals, medical devices & implants and orthodontic wire.

Description

Elgiloy® is a non-magnetic Cobalt-Chromium-Nickel-Molybdenum alloy having a unique combination of very high strength, excellent corrosion resistance and high fatigue strength. Elgiloy® is highly resistant to sulfide stress corrosion cracking and as a result is the alloy of choice in the most demanding sour well environments. In seawater Elgiloy® is virtually immune to crevice and stress corrosion and pitting even at the highest strength levels and can operate at cryogenic temperatures up to 850°F (454°C).

Industries Supplied

Oil & Gas Extraction, Medical & Dental, Aerospace, Defense and Space Exploration.

Nominal Composition

Co: 39.0 - 41.0
Cr: 19.0 - 21.0
Ni: 14.0 - 16.0
Mo: 6.0 - 8.0
Mn: 1.5 - 2.5
Fe: balance
Si: 1.2 max
C: 0.15 max
Be: 0.1 max
P: 0.015 max
S : 0.015 max

Physical Properties

Density: 0.300 lb/in3, (8.30 g/cm3)

Modulus of Elasticity (E): 
At 70°F (20°C): Up to 32.0 x 103 ksi (190 GPa)

Modulus of Rigidity (G): 
At 70°F (20°C): 11.2 x 103 ksi (77.2 GPa)

Coefficient of Expansion:
8.4 µin/in.-°F (70°F to 600°F)
15.2 µm/m-°C (20°C to 300°C)

Electrical Resistivity: 39.2 µΩ.in, (99.6 µΩ.cm)

Thermal Conductivity: 86.5 Btu-in/ft2hr-°F, (12.5 W/m-K)

Applicable Specifications

Wire & Bar: AMS 5833, AMS 5834, ASTM F1058, NACE MR0175 (ISO 15156-3), ISO 5832-7.

Typical Mechanical Properties – Spring Applications

  • Annealed
    • Heat Treatment: 2048°F (1120°C)
    • Tensile Strength: 120 - 150 ksi; (830-1035 MPa)
    • Suggested Operating Conditions: -300°F to 850°F (-184°C to 454°C)

  • Spring Temper
    • Tensile Strength: 220 – 290 ksi; (1515 – 2000 MPa)
    • Suggested Operating Conditions: -300°F to 850°F (-184°C to 454°C‚Äč)

  • Spring Temper + Aged
    • Heat Treatment: After spring coiling. Age: 980°F (527°C) for 5 hours.
    • Tensile Strength: 260– 330 ksi; (1790 – 2275 MPa)
    • Suggested operating conditions: -300°F to 850°F (-184°C to 454°C)

Elgiloy® is a registered trademark of Elgiloy Specialty Metals.

For further information Contact:

Email: wireinfo@elgiloy.com
Phone: 1 847 695 1900 
Elgiloy Specialty Metals - Wire Products
356 N.Cross Street
Sycamore, IL 60178 USA