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. % Al 6   Sn 2   Ti 86   V 6

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

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

Physical Properties	Metric	English	Comments
Density	4.54 g/cc	0.164 lb/in³
Mechanical Properties
Hardness, Brinell	351	351	Estimated from Rockwell C.
Hardness, Knoop	382	382	Estimated from Rockwell C.
Hardness, Rockwell C	38	38
Hardness, Vickers	367	367	Estimated from Rockwell C.
Tensile Strength, Ultimate	1050 MPa	152000 psi
Tensile Strength, Yield	980 MPa	142000 psi
Elongation at Break	14 %	14 %
Modulus of Elasticity	110.3 GPa	16000 ksi
Ultimate Bearing Strength	2100 MPa	305000 psi	e/D = 2
Bearing Yield Strength	1350 MPa	196000 psi	e/D = 2
Poisson's Ratio	0.32	0.32
Charpy Impact	16 J	11.8 ft-lb	V-notch
Fatigue Strength	140 MPa	20300 psi	Notched 10,000,000 Cycles
Fatigue Strength	190 MPa	27600 psi	100,000 cycles. Kt (stress concentration factor) = 3
Fracture Toughness	60 MPa-m½	54.6 ksi-in½	KIC
Shear Modulus	45 GPa	6530 ksi	Aged sample.
Electrical Properties
Electrical Resistivity	0.000157 ohm-cm	0.000157 ohm-cm
Thermal Properties
CTE, linear 20°C	9 µm/m-°C	5 µin/in-°F	20-100ºC
CTE, linear 250°C	9.4 µm/m-°C	5.22 µin/in-°F	Average over the range 20-315ºC
CTE, linear 500°C	9.5 µm/m-°C	5.28 µin/in-°F	Average over the range 20-540ºC
Specific Heat Capacity	0.67 J/g-°C	0.16 BTU/lb-°F
Thermal Conductivity	6.6 W/m-K	45.8 BTU-in/hr-ft²-°F
Melting Point	1627 - 1649 °C	2960 - 3000 °F
Solidus	1627 °C	2960 °F
Liquidus	1649 °C	3000 °F
Maximum Service Temperature, Air	315 °C	599 °F	Subject to tensile embrittlement above 315ºC
Beta Transus	945 °C	1730 °F

References for this datasheet.