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Titanium Ti-6Al-2Nb-1Ta-1Mo, Annealed
Categories: Metal; Nonferrous Metal; Titanium Alloy; Alpha/Near Alpha Titanium Alloy

Material Notes: Annealed 700-870°C for 15 - 120 min.

Characteristics: High toughness, moderate strength, weldability, resistance to seawater corrosion, unheat-treatable.

Applications: Marine and sub-marine vehicles - hardware and hull structures, Naval aircraft.

Forms available: Billet, bar and plate.

1 other heat treatment of this alloy is in MatWeb.

Key Words: Ti6Al2Nb1Ta1Mo, Ti-6211; Ti-621/0.8; UNS R56210
Vendors: Visit metalmen for your metals needs. Products include special chemistry, tight tolerances, custom tempers, odd dimensions/forms, and small quantities. Phone 1-800-767-9494.

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Physical PropertiesOriginal ValueComments
Density 4.48 g/cc
 
Mechanical PropertiesOriginal ValueComments
Hardness, Brinell 290Estimated from Rockwell C.
Hardness, Knoop 315Estimated from Rockwell C.
Hardness, Rockwell C 30
Hardness, Vickers 304Estimated from Rockwell C.
Tensile Strength 586 MPa
@Temperature 427 °C
Tensile Strength, Ultimate 860 MPa
Tensile Strength, Yield 760 MPa
Elongation at Break 14 %
Tensile Modulus 115.8 GPa
Modulus of Rigidity 24.0 GPa
Compressive Yield Strength 790 MPa
Compressive Modulus 124 GPa
Notched Tensile Strength 1210 MPaKt (stress concentration factor) = 5.8
Poissons Ratio 0.31Typical for alpha titanium alloy.
Fatigue Strength 170 MPa
@# of Cycles 1.00e+7
Kt (stress concentration factor) = 3.0
 280 MPa
@# of Cycles 1.00e+7
unnotched
Fracture Toughness 100 MPa-m½KIC
Shear Modulus 44.2 GPaCalculated from typical values.
Shear Strength 580 MPaUltimate shear strength
Charpy Impact 54.0 JV-notch
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.000154 ohm-cm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 9.20 µm/m-°C
@Temperature 20.0 - 93.0 °C
Specific Heat Capacity 0.550 J/g-°CEstimated from similar materials
Thermal Conductivity 6.40 W/m-K
Melting Point <= 1650 °CEstimated from similar materials
Liquidus 1650 °CEstimated from similar materials
Beta Transus 1016 °C
 
Component Elements PropertiesOriginal ValueComments
Aluminum, Al 6.0 %
Molybdenum, Mo 1.0 %
Niobium, Nb (Columbium, Cb) 2.0 %
Tantalum, Ta 1.0 %
Titanium, Ti 90 %

References for this datasheet.

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MTA612 / 14131

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