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Titanium Grade 12, Annealed

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Subcategory: Metal; Nonferrous Metal; Titanium Alloy; Unalloyed/Modified Titanium

Close Analogs: Titanium Grades 1,2,3,4,7,11,and 12 are all considered unalloyed and have similar mechanical properties.

Key Words: UNS R53400; ASTM Grade 12, titanium alloy

Component   Wt. %

Material Notes:
Addition of 0.3% Mo and 0.8% Ni to titanium increases corrosion resistance at a lower cost than Pd (see Ti Grades 7 and 11). Sample was annealed 20 min. at 815°C and 5 min. at 788°C.

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Physical PropertiesMetricEnglishComments
Density4.5 g/cc0.163 lb/in³ 

Mechanical Properties
Tensile Strength, Ultimate620 MPa89900 psi 
Tensile Strength, Yield480 MPa69600 psi 
Elongation at Break23 %23 % 
Modulus of Elasticity103 GPa14900 ksi in tension.
Notched Tensile Strength620 MPa89900 psi Kt (stress concentration factor) = 5.3
Poisson's Ratio0.280.28 
Fatigue Strength140 MPa20300 psi at 1E+7 cycles. Kt (stress concentration factor) = 3.5
Fatigue Strength310 MPa45000 psi 1E+7 cycles, Unnotched
Shear Modulus41 GPa5950 ksi 

Electrical Properties
Electrical Resistivity5.2e-005 ohm-cm5.2e-005 ohm-cm 

Thermal Properties
Heat of Fusion325 J/g140 BTU/lb High Purity Ti.
CTE, linear 20°C9.9 µm/m-°C5.5 µin/in-°F 20-93°C
CTE, linear 250°C9.5 µm/m-°C5.28 µin/in-°F Unspecified heat treatment. Average over the range 0-315ºC
Specific Heat Capacity0.555 J/g-°C0.133 BTU/lb-°F 
Thermal Conductivity19 W/m-K132 BTU-in/hr-ft²-°F 
Melting PointMax 1660 °CMax 3020 °F Liquidus
Liquidus1660 °C3020 °F 
Beta Transus890 °C1630 °F 

Optical Properties
Emissivity (0-1)0.30.3 High purity Ti at 710°C
Reflection Coefficient, Visible (0-1)0.560.56 High purity Ti; visible light.
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References for this datasheet.

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