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Chemical Composition
| Element | C | Mn | Si | P | S | Cr | Ni | Co | Mo | Be | Fe |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Min % | – | 1.5 | – | – | – | 19 | 14 | 39 | 6 | – | – |
| Max % | 0.15 | 2.5 | 1.2 | 0.015 | 0.015 | 21 | 16 | 41 | 8 | 0.1 | bal |
Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8.30 g/cm3 | 0.300 lb/in3 |
| Melting point | 1427°C | 2601°F |
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 970 MPa | 141000 psi |
| Yield strength | 480 MPA | 69600 psi |
| Poisson’s ratio | 0.226 | 0.226 |
| Elastic modulus | 189.6 GPa | 27500 ksi |
| Hardness, Brinell | 224 | 224 |
| Hardness, Knoop | 262 | 262 |
| Hardness, Rockwell A | 60 | 60 |
| Hardness, Rockwell B | 97 | 97 |
| Hardness, Rockwell C | 19 | 19 |
| Hardness, Vickers | 230 | 230 |
Thermal Properties
| Properties | Metric | Imperial |
|---|---|---|
| Thermal expansion co-efficient (at 0.000-500°C/32-932°F) | 15.17 µm/m°C | 8.42 µin/in°F |
| Thermal conductivity | 12.5 W/mK | 86.8 BTU in/hr.ft².°F |
Features:
- High Strength: Elgiloy alloy (UNS R30003) is a cobalt-chromium-nickel-molybdenum alloy with excellent strength properties.
- Excellent Corrosion Resistance: The alloy exhibits high resistance to sulfide stress corrosion cracking and pitting, making it suitable for demanding environments.
- Good Fatigue Life: Elgiloy alloy demonstrates good fatigue strength, suitable for applications requiring durability.
- High Elasticity: The alloy possesses a high modulus of elasticity, making it suitable for applications requiring elastic recovery.
Applications:
- Oil and Gas Industry: Elgiloy alloy is used to manufacture high-strength, corrosion-resistant components such as valves, pump shafts, and wellbore tools, capable of withstanding harsh extraction environments.
- Aerospace: The alloy is used to manufacture aircraft control cables, capable of enduring repeated stretching and contracting.
- Semiconductor Industry: Elgiloy alloy is used to manufacture diaphragm valves with high-quality surface finishes, ensuring reliable performance.
- Medical Devices: Due to its biocompatibility and corrosion resistance, Elgiloy alloy is used to manufacture medical instruments such as surgical implants and tools.
