Titanium Ti-8Al-1Mo-1V (Ti-8-1-1) Annealed 8 hr at 790°C (1450°F)

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Titanium Ti-8Al-1Mo-1V (Ti-8-1-1) Annealed 8 hr at 790°C (1450°F)
Categories:	Metal; Nonferrous Metal; Titanium Alloy; Alpha/Near Alpha Titanium Alloy
Material Notes:	Information provided by Allvac and the references. 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, 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	334	Estimated from Rockwell C.
Hardness, Knoop	363	Estimated from Rockwell C.
Hardness, Rockwell C	36
Hardness, Vickers	349	Estimated from Rockwell C.
Tensile Strength	689 MPa @Temperature 427 °C
Tensile Strength, Ultimate	1000 MPa
Tensile Strength, Yield	930 MPa
Elongation at Break	12 %
Creep Strength	620 MPa @Temperature 316 °C, Time >=3.60e+6 sec	strain 0.2%
Rupture Strength	276 MPa @Temperature 538 °C, Time 3.60e+6 sec
Tensile Modulus	121 GPa
Modulus of Rigidity	46.2 GPa
Compressive Yield Strength	980 MPa
Compressive Modulus	124 GPa
Notched Tensile Strength	1100 MPa	K_t (stress concentration factor) = 6.0
Ultimate Bearing Strength	2000 MPa	e/D = 2
Bearing Yield Strength	1480 MPa	e/D = 2
Poissons Ratio	0.32
Fatigue Strength	170 MPa @# of Cycles 1.00e+7	K_t (stress concentration factor) = 2.6
	340 MPa @# of Cycles 1.00e+7	unnotched
	725 MPa @# of Cycles 50000	unnotched
Fracture Toughness	910 MPa-m½
Shear Modulus	46.0 GPa
Shear Strength	620 MPa	Ultimate shear strength
Charpy Impact	20.0 - 30.0 J	V-notch

Thermal Properties	Original Value	Comments
CTE, linear	8.50 µm/m-°C @Temperature 20.0 °C	Annealed
	9.20 µm/m-°C @Temperature 250 °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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MTA816 / 14141

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