Ti 6Al-4V ELI is an alpha-beta alloy containing 6% aluminum, 4% vanadium, and extra low interstitials (ELI). Interstitial elements such as iron and oxygen are tightly controlled during the melt process in order to improve the ductility and fracture toughness.
Chemical composition
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ASTM F136 |
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| Composition |
ASTM F136 |
| Nitrogen | 0.05 max |
| Carbon | 0.08 max |
| Hydrogen | 0.012 max* |
| Iron | 0.25 max |
| Oxygen | 0.13 max |
| Aluminum | 5.50 - 6.50 |
| Vanadium | 3.50 - 4.50 |
| Titanium | Balance |
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*Material 0.813 mm [0.032 in] and under may have hydrogen content up to 0.0150%. |
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Physical properties
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Metric |
English |
|
| Density | 4.43 g/cm³ | 0.160 lbs/in³ |
| Modulus of elasticity | 105 GPa | 15.2 Mpsi |
| Electrical resistivity | 1750 µohms*mm | 68.9 µohms*in |
| Thermal conductivity | 0.865 W/(m*°C) |
6.0 BTU*in/(hr*ft²*F) |
| Coefficient of thermal expansion | 8.64 µm/(m*°C) | 4.8 µin/(in*°F) |
*Values calculated at 22 °C [72 °F].
Mechanical properties
| Size |
Ultimate tensile strength (mis.) |
Yield strength* (min.) | 4D elongation** (min.) % |
| < 4.75 mm [< 0.187 in] |
860 MPa [125 ksi] | 795 MPa [115 ksi] | 10 |
| 4.75 mm - 6.35 mm [0.187 in - 0.0250 in] |
860 MPa [125 ksi] | 795 MPa [115 ksi] | 10 |
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* 2% offset |
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