Titanium Ti-6Al-6V-2Sn (Ti-6-6-2) Annealed

Subcategory: Alpha/Beta Titanium Alloy; Metal; Nonferrous Metal; Titanium Alloy

Close Analogs: 2 other heat treatments of this alloy are listed in MatWeb.

Key Words: Ti-662; Ti-6-6-2; UNS R56620

Component   Wt. %

Material Notes:
Information provided by Allvac and the references. Annealed 730C. Alpha-Beta Alloy

Applications: Airframes, jet engines, rocket engine cases, nuclear reactor components, ordnance components.

Physical PropertiesMetricEnglishComments
Density4.54 g/cc0.164 lb/in 

Mechanical Properties
Hardness, Brinell351351 Estimated from Rockwell C.
Hardness, Knoop382382 Estimated from Rockwell C.
Hardness, Rockwell C3838 
Hardness, Vickers367367 Estimated from Rockwell C.
Tensile Strength, Ultimate1050 MPa152000 psi 
Tensile Strength, Yield980 MPa142000 psi 
Elongation at Break14 %14 % 
Modulus of Elasticity110.3 GPa16000 ksi 
Ultimate Bearing Strength2100 MPa305000 psi e/D = 2
Bearing Yield Strength1350 MPa196000 psi e/D = 2
Poisson's Ratio0.320.32 
Charpy Impact16 J11.8 ft-lb V-notch
Fatigue Strength140 MPa20300 psi Notched 10,000,000 Cycles
Fatigue Strength190 MPa27600 psi 100,000 cycles. Kt (stress concentration factor) = 3
Fracture Toughness60 MPa-m54.6 ksi-in KIC
Shear Modulus45 GPa6530 ksi Aged sample.

Electrical Properties
Electrical Resistivity0.000157 ohm-cm0.000157 ohm-cm 

Thermal Properties
CTE, linear 20C9 m/m-C5 in/in-F 20-100C
CTE, linear 250C9.4 m/m-C5.22 in/in-F Average over the range 20-315C
CTE, linear 500C9.5 m/m-C5.28 in/in-F Average over the range 20-540C
Specific Heat Capacity0.67 J/g-C0.16 BTU/lb-F 
Thermal Conductivity6.6 W/m-K45.8 BTU-in/hr-ft-F 
Melting Point1627 - 1649 C2960 - 3000 F 
Solidus1627 C2960 F 
Liquidus1649 C3000 F 
Maximum Service Temperature, Air315 C599 F Subject to tensile embrittlement above 315C
Beta Transus945 C1730 F 

References for this datasheet.

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