Titanium Ti-8Al-1Mo-1V (Ti-8-1-1) Duplex Anneal

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Titanium Ti-8Al-1Mo-1V (Ti-8-1-1) Duplex Anneal
Categories:	Metal; Nonferrous Metal; Titanium Alloy; Alpha/Near Alpha Titanium Alloy
Material Notes:	Information provided by Allvac and the references. Duplex Anneal: 980ºC 4h; air cool; 540ºC 24 h; air cool. Characteristics: Low density, high modulus, high stiffness/density ratio, moderate to high strength, good elevated temperature tensile properties and excellent creep resistance (for operating temperatures up to 455°C) Applications: Fan & compressor blades, discs, spacers, seals, rings. Forms typically available: Billet, bar, rod, extrusions, plate, sheet and wire. 5 other heat treatments of this alloy are in MatWeb.
Key Words:	Ti8Al1Mo1V, DA, UNS R54810; Ti-811
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Physical Properties	Original Value	Comments

Density	4.37 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	326	Estimated from Rockwell C.
Hardness, Knoop	354	Estimated from Rockwell C.
Hardness, Rockwell C	35
Hardness, Vickers	341	Estimated from Rockwell C.
Tensile Strength, Ultimate	900 - 1000 MPa
Tensile Strength, Yield	830 - 951 MPa
Elongation at Break	15 %
Reduction of Area	28 %
Creep Strength	68.9 MPa @Temperature 500 °C, Time 3.60e+6 sec	strain 0.05%
	97.9 MPa @Temperature 500 °C, Time 3.60e+6 sec	strain 0.1%
	157 MPa @Temperature 500 °C, Time 3.60e+6 sec	strain 0.2%
Modulus of Elasticity	124 GPa
Modulus of Rigidity	46.9 GPa
Poissons Ratio	0.32
Fatigue Strength	620 MPa @# of Cycles 3.00e+6	unnotched
	724 MPa @# of Cycles 85000
Fracture Toughness	176 MPa-m½	K(IC)
	374 MPa-m½	K(C)
Shear Modulus	46.0 GPa
Charpy Impact	20.0 - 34.0 J	V-notch
Bend Radius, Minimum	4.5 t @Thickness >=1.80 mm

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.000198 ohm-cm

Thermal Properties	Original Value	Comments
CTE, linear	8.50 µm/m-°C @Temperature 20.0 °C
	9.20 µm/m-°C @Temperature 250 °C
	10.1 µm/m-°C @Temperature 500 °C
Specific Heat Capacity	0.502 J/g-°C
Thermal Conductivity	6.00 W/m-K
Melting Point	<= 1540 °C
Liquidus	1540 °C
Beta Transus	1038 °C

Component Elements Properties	Original Value	Comments
Aluminum, Al	7.35 - 8.35 %
Carbon, C	<= 0.080 %
Hydrogen, H	<= 0.015 %
Iron, Fe	<= 0.30 %
Molybdenum, Mo	0.75 - 1.25 %
Nitrogen, N	<= 0.050 %
Other, each	<= 0.10 %
Other, total	<= 0.40 %
Oxygen, O	<= 0.12 %
Titanium, Ti	88.185 - 91.15 %	As Balance; Elemental Composition per ASTM B265
Vanadium, V	0.75 - 1.25 %

References for this datasheet.

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MTA815 / 14140

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