DESCRIPTION
Elgiloy® alloy is a Cobalt-Chromium-Nickel-Molybdenum alloy having a unique combination of very high strength, excellent corrosion resistance, and high fatigue strength. Elgiloy® alloy wire 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).
Applicable Specifications
Wire & Bar:
AMS 5833, AMS 5834, ASTM F1058, NACE MR0175 (ISO 15156-3), ISO 5832-7, UNS R30003
Applications
Springs, torsion bars, seals, medical devices & implants and orthodontic wire.
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)
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)
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:
CONTACT US
Phone: 1.847.695.1900
Elgiloy Specialty Metals – Wire Products
356 N.Cross Street
Sycamore, IL 60178 USA
Limitation of Liability and Disclaimer of Warranty:
- The content in these data sheets is provided primarily by third-party melting mills and is provided for reference only. It is not intended for engineering or design.
- Applications may be discussed, however, Elgiloy Specialty Metals, a Division of Combined Metals Company LLC, does not recommend or endorse any material for any particular end use or application.
- The data included in this data sheet are typical values and may vary.
- Elgiloy Specialty Metals, a Division of Combined Metals Company LLC, makes no representations or warranties, express or implied, as to the accuracy, completeness, condition, suitability, performance, fitness for a particular purpose, or merchantability of any information contained in any data sheet.
In no event will Elgiloy Specialty Metals, a Division of Combined Metals Company LLC, be liable for any damages whatsoever arising from the use of the information included in the data sheets.
