Titanium Ti-6Al-2Sn-4Zr-2Mo-0.1Si; Duplex Annealed
Subcategory: Alpha/Near Alpha Titanium Alloy; Metal; Nonferrous Metal; Titanium Alloy
Key Words: Ti-6242Si; Ti-6242S; UNS R54620
Component | Wt. % |  | | Al | 6 | | Mo | 2 | | Si | 0.08 | | Sn | 2 | | Ti | 86 | | Zr | 4 | |
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Material Notes: Information provided by Allvac and the references. Applications: High-temp jet engines. Blades, discs, spacers, seals. High performance automotive valves.
Physical Properties | Metric | English | Comments |
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Density | 4.54 g/cc | 0.164 lb/in³ | |
Mechanical Properties |
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Hardness, Brinell | 318 | 318 | Estimated from Rockwell C. |
Hardness, Knoop | 346 | 346 | Estimated from Rockwell C. |
Hardness, Rockwell C | 34 | 34 | |
Hardness, Vickers | 333 | 333 | Estimated from Rockwell C. |
Tensile Strength, Ultimate | 1110 MPa | 161000 psi | |
Tensile Strength, Yield | 1050 MPa | 152000 psi | |
Elongation at Break | 13 % | 13 % | |
Reduction of Area | 30 % | 30 % | |
Compressive Modulus | 118 GPa | 17100 ksi | |
Notched Tensile Strength | 1025 MPa | 149000 psi | Kt >17; Average of longitudinal and transverse. |
Ultimate Bearing Strength | 1800 MPa | 261000 psi | e/D = 2.0; varies with thickness; this value is at about 2.4 mm. |
Bearing Yield Strength | 1450 MPa | 210000 psi | e/D = 2.0 |
Poisson's Ratio | 0.325 | 0.325 | |
Charpy Impact | 36 J | 26.6 ft-lb | V-Notch, oxygen content about 0.1%. Value drops with increasing O content. |
Fatigue Strength | 225 MPa | 32600 psi | 10,000,000 Cycles; Kt = 3 |
Fatigue Strength | 320 MPa | 46400 psi | 50,000 Cycles; Kt = 3 |
Fatigue Strength | 610 MPa | 88500 psi | 10,000,000 Cycles; A=0.67 |
Fatigue Strength | 750 MPa | 109000 psi | 500,000 Cycles; A=0.67 |
Shear Modulus | 44.5 GPa | 6450 ksi | Calculated |
Electrical Properties |
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Electrical Resistivity | 0.00019 ohm-cm | 0.00019 ohm-cm | |
Thermal Properties |
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CTE, linear 20°C | 7.7 µm/m-°C | 4.28 µin/in-°F | 0-100ºC |
CTE, linear 250°C | 7.7 µm/m-°C | 4.28 µin/in-°F | at 205ºC |
CTE, linear 500°C | 8.1 µm/m-°C | 4.5 µin/in-°F | Average over the range 315-540ºC |
Specific Heat Capacity | 0.46 J/g-°C | 0.11 BTU/lb-°F | |
Thermal Conductivity | 7 W/m-K | 48.6 BTU-in/hr-ft²-°F | |
Melting Point | Max 1705 °C | Max 3100 °F | Liquidus |
Liquidus | 1705 °C | 3100 °F | |
Beta Transus | 995 °C | 1820 °F | |
References for this datasheet.
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