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Titanium Beta C (Ti-3Al-8V-6Cr-4Mo-4Zr ST 815°C, Aged 510°C
Categories: Metal; Nonferrous Metal; Titanium Alloy; Beta Titanium Alloy

Material Notes: ST=solution Treated

Equiaxed beta grain structure (bcc) with fine alpha precipitate (cph) within matrix. Good ductility, high strength.

Applications: Fasteners, springs, torsion bars, foil.

3 other heat treatments of this alloy are in MatWeb.

Key Words: Ti-3Al-8V-6Cr-4Mo-4Zr; TIMETAL 3-8-6-44; UNS R58640; Ti-38-6-44
Vendors:
TITANIUM ENGINEERS is your source for high strength, NACE titanium alloys, with a full range of stock sizes and sizes made to order. Our in-house metallurgical experts ensure the best alloy selection and process titanium to meet unique customer specifications. Please visit our website www.TitaniumEngineers.com for more information or call us at +1 281 265 2910 (USA) or +44 (0) 1675 464200 (UK).

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Physical PropertiesMetricEnglishComments
Density 4.82 g/cc0.174 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 351351Estimated from Rockwell C.
Hardness, Knoop 382382Estimated from Rockwell C.
Hardness, Rockwell C 3838
Hardness, Vickers 367367Estimated from Rockwell C.
Tensile Strength, Ultimate 1240 MPa180000 psi
Tensile Strength, Yield 1170 MPa170000 psi
Elongation at Break 7.0 %7.0 %
Reduction of Area 15 %15 %
Modulus of Elasticity 104 GPa15100 ksi
Compressive Yield Strength 1070 MPa155000 psi
Notched Tensile Strength 600 MPa87000 psiKt (stress concentration factor) = 8.4
Poissons Ratio 0.330.33
Fatigue Strength  240 MPa
@# of Cycles 1.00e+7
34800 psi
@# of Cycles 1.00e+7
Kt (stress concentration factor) = 3.0
 450 MPa
@# of Cycles 1.00e+7
65300 psi
@# of Cycles 1.00e+7
Unnotched
Fracture Toughness 55.0 MPa-m½50.1 ksi-in½K(IC)
Shear Modulus 40.0 GPa5800 ksi
Shear Strength 790 MPa115000 psiUltimate shear strength
Charpy Impact 9.00 J6.64 ft-lbV-notch
 
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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MTB0C2 / 14160

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