Titanium Beta C (Ti-3Al-8V-6Cr-4Mo-4Zr) Solution Treated 815°C
Categories: Metal; Nonferrous Metal; Titanium Alloy; Beta Titanium Alloy

Material Notes: Equiaxed beta grain structure (bcc). Highly formable, able to be cold-worked, better corrosion properties than other high strength alloys

Applications: Fasteners, springs, torsion bars, foil.

3 other heat treatments of this alloy are in MatWeb.

Key Words: Ti-38-6-44; UNS R58640; Ti-3Al-8V-6Cr-4Mo-4Zr; TIMETAL 3-8-6-44
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Physical PropertiesMetricEnglishComments
Density 4.82 g/cc0.174 lb/in³
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 304304Estimated from Rockwell C.
Hardness, Knoop 330330Estimated from Rockwell C.
Hardness, Rockwell C 3232
Hardness, Vickers 318318Estimated from Rockwell C.
Tensile Strength, Ultimate 860 MPa125000 psi
Tensile Strength, Yield 825 MPa120000 psi
Elongation at Break 7.0 %7.0 %
Modulus of Elasticity 88.0 GPa12800 ksi
Poissons Ratio 0.330.33After ST 815ºC, Aged 510ºC
Shear Modulus 40.0 GPa5800 ksiAged
Shear Strength 620 MPa89900 psiUltimate shear strength
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.000160 ohm-cm0.000160 ohm-cm
Thermal PropertiesMetricEnglishComments
CTE, linear  8.30 µm/m-°C
@Temperature 20.0 - 100 °C
4.61 µin/in-°F
@Temperature 68.0 - 212 °F
 8.70 µm/m-°C
@Temperature 20.0 - 250 °C
4.83 µin/in-°F
@Temperature 68.0 - 482 °F
estimated from lower temperatures
Specific Heat Capacity 0.515 J/g-°C0.123 BTU/lb-°F
Thermal Conductivity 6.20 W/m-K43.0 BTU-in/hr-ft²-°F
Melting Point 1555 - 1650 °C2831 - 3000 °F
Solidus 1555 °C2831 °F
Liquidus 1650 °C3000 °F
Beta Transus 730 °C1350 °F
Component Elements PropertiesMetricEnglishComments
Aluminum, Al 3.0 %3.0 %
Carbon, C <= 0.050 %<= 0.050 %
Chromium, Cr 6.0 %6.0 %
Iron, Fe <= 0.30 %<= 0.30 %
Molybdenum, Mo 4.0 %4.0 %
Nitrogen, N <= 0.030 %<= 0.030 %
Oxygen, O <= 0.14 %<= 0.14 %
Titanium, Ti 75 %75 %
Vanadium, V 8.0 %8.0 %
Zirconium, Zr 4.0 %4.0 %

References for this datasheet.

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