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

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Titanium Ti-6Al-6V-2Sn (Ti-6-6-2) Annealed
Categories:	Metal; Nonferrous Metal; Titanium Alloy; Alpha/Beta Titanium Alloy
Material Notes:	Information provided by Allvac and the references. Annealed 730ºC. Alpha-Beta Alloy Characteristics: Good corrosion resistance. Higher strength, lower fracture toughness and lower fatigue properties when compared to Ti-6Al-4V Applications: Airframes, jet engines, rocket engine cases, nuclear reactor components, ordnance components. Forms available: Billet, bar, plate, sheet and extrusions. 2 other heat treatments of this alloy are listed in MatWeb.
Key Words:	Ti-662; Ti-6-6-2; UNS R56620
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Physical Properties	Original Value	Comments

Density	4.54 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	351	Estimated from Rockwell C.
Hardness, Knoop	382	Estimated from Rockwell C.
Hardness, Rockwell C	38
Hardness, Vickers	367	Estimated from Rockwell C.
Tensile Strength, Ultimate	1050 MPa
Tensile Strength, Yield	980 MPa
Elongation at Break	14 %
Reduction of Area	30 %
Modulus of Elasticity	110.3 GPa
Ultimate Bearing Strength	2100 MPa	e/D = 2
Bearing Yield Strength	1350 MPa	e/D = 2
Poissons Ratio	0.32
Fatigue Strength	140 MPa @# of Cycles 1.00e+8	notched
	190 MPa @# of Cycles 100000	K_t (stress concentration factor) = 3
Fracture Toughness	60.0 MPa-m½	K_IC
Shear Modulus	45.0 GPa	Aged sample.
Charpy Impact	16.0 J	V-notch
Bend Radius, Minimum	4.5 t @Thickness >=1.80 mm

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.000157 ohm-cm
Magnetic Permeability	1.0	non-magnetic

Thermal Properties	Original Value	Comments
CTE, linear	9.00 µm/m-°C @Temperature 20.0 - 100 °C
	9.40 µm/m-°C @Temperature 20.0 - 315 °C	average
	9.50 µm/m-°C @Temperature 20.0 - 540 °C	average
Specific Heat Capacity	0.670 J/g-°C
	0.687 J/g-°C @Temperature 260 °C
	0.712 J/g-°C @Temperature 480 °C
Thermal Conductivity	6.60 W/m-K
	8.12 W/m-K @Temperature 205 °C
	11.9 W/m-K @Temperature 425 °C
Melting Point	1627 - 1649 °C
Solidus	1627 °C
Liquidus	1649 °C
Maximum Service Temperature, Air	315 °C	Subject to tensile embrittlement above 315ºC
Beta Transus	945 °C

Component Elements Properties	Original Value	Comments
Aluminum, Al	5.0 - 6.0 %
Carbon, C	<= 0.050 %
Copper, Cu	0.35 - 1.0 %
Hydrogen, H	<= 0.015 %
Iron, Fe	0.35 - 1.0 %
Nitrogen, N	<= 0.040 %
Other, each	<= 0.10 %
Other, total	<= 0.30 %
Oxygen, O	<= 0.20 %
Tin, Sn	1.5 - 2.5 %
Titanium, Ti	82.895 - 87.8 %	As Balance; Elemental Composition per ASTM B265
Vanadium, V	5.0 - 6.0 %

Descriptive Properties
Crystal Structure	bcc	Beta
	cph	Alpha

References for this datasheet.

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MTP661 / 14244

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