DESCRIPTION
Elgiloy® alloy is a non-magnetic Cobalt-Chromium-Nickel-Molybdenum alloy having a unique combination of very high strength while maintaining excellent formability, excellent corrosion resistance, and high fatigue strength. Additional strength increases of up to 25% can be achieved through aging cold reduced material. Elgiloy® alloy 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® alloy is virtually immune to crevice and stress corrosion and pitting even at the highest strength levels. Elgiloy® alloy performs across a wide range of temperatures: from cryogenic up to 850°F (454°C).
Applicable Specifications
Strip and Foil:
AMS 5876, ASTM F1058, NACE MR 0175 & MR 0103, ISO 5832-7
Applications
Springs, seals, semiconductor components, orthodontics, medical devices, surgical implants, satellite communications equipment, and weapons systems.
Industries Supplied
Oil & Gas Extraction, Medical, Dental, Aerospace, Defense, Space Exploration and Watch making.
Nominal Composition
C: 0.15 max
Mn: 1.5 – 2.5
Si: 1.20 max
P: 0.015 max
S: 0.015 max
Cr: 19.0 – 21.0
Ni: 14.0 – 16.0
Co: 39.0 – 41.0
Mo: 6.0 – 8.0
Be: 0.10 max
Fe: Balance
Physical Properties
Density:
0.30 lb/in3, (8.30 g/cm3)
Modulus of Elasticity (E):
At 70°F (20°C): 27 – 29 x 103 ksi cold reduced (186 – 200 GPa cold reduced)
At 70°F (20°C): 30 – 32 x 103 ksi cold reduced & aged (206 – 221 GPa cold reduced & aged)
Modulus of Rigidity (G):
At 70°F (20°C): 11.0 x 103 ksi (76 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:
39.21 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: Per AMS 5876
- Tensile Strength: 100 ksi min (690 MPa)
- Suggested Operating Conditions: -300°F to 850°F (-184°C to 454°C)
Spring Temper
- Heat Treatment: No Heat Treatment
- Tensile Strength: Up to 310 ksi (2100 MPa)
- Suggested Operating Conditions: -300°F to 850°F (-184°C to 454°C)
Spring Temper + Aged
- Heat Treatment: After cold rolling. Age: Per AMS 5876, Nace MR 0175
- Tensile Strength: Up to 380 ksi (2600 MPa)
- Suggested Operating Conditions: -300°F to 850°F (-184°C to 454°C)
Inconel® is a registered trademark of the Special Metals Corporation group of companies.
For further information Contact:
CONTACT US
Phone: 1.888.843.2350
Elgiloy Specialty Metals – Strip Products
1565 Fleetwood Dr
Elgin, IL 60123 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.
