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

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

Close Analogs: 5 other heat treatments of this alloy are in MatWeb.

Key Words: Ti8Al1Mo1V, UNS R54810; Ti-811

Component    Wt. % Al 8   Mo 1   Ti 90   V 1

Material Notes:
Information provided by Allvac and the references.

Applications: Fan & compressor blades, discs, spacers, seals, rings. Excellent creep resistance.

Physical Properties	Metric	English	Comments
Density	4.37 g/cc	0.158 lb/in³
Mechanical Properties
Hardness, Brinell	334	334	Estimated from Rockwell C.
Hardness, Knoop	363	363	Estimated from Rockwell C.
Hardness, Rockwell C	36	36
Hardness, Vickers	349	349	Estimated from Rockwell C.
Tensile Strength, Ultimate	1000 MPa	145000 psi
Tensile Strength, Yield	930 MPa	135000 psi
Elongation at Break	12 %	12 %
Modulus of Elasticity	121 GPa	17500 ksi	in tension.
Compressive Yield Strength	980 MPa	142000 psi
Notched Tensile Strength	1100 MPa	160000 psi	Kt (stress concentration factor) = 6.0
Ultimate Bearing Strength	2000 MPa	290000 psi	e/D = 2
Bearing Yield Strength	1480 MPa	215000 psi	e/D = 2
Poisson's Ratio	0.32	0.32
Charpy Impact	20 - 30 J	14.8 - 22.1 ft-lb	V-notch
Fatigue Strength	170 MPa	24700 psi	at 1E+7 cycles. Kt (stress concentration factor) = 2.6
Fatigue Strength	340 MPa	49300 psi	1E+7 cycles, Unnotched
Fatigue Strength	725 MPa	105000 psi	50,000 cycles, Unnotched
Shear Modulus	46 GPa	6670 ksi
Shear Strength	620 MPa	89900 psi	Ultimate shear strength
Thermal Properties
CTE, linear 20°C	8.5 µm/m-°C	4.72 µin/in-°F	Annealed
CTE, linear 250°C	9.2 µm/m-°C	5.11 µin/in-°F
Specific Heat Capacity	0.502 J/g-°C	0.12 BTU/lb-°F
Thermal Conductivity	6 W/m-K	41.6 BTU-in/hr-ft²-°F
Melting Point	Max 1540 °C	Max 2800 °F	Liquidus
Liquidus	1540 °C	2800 °F
Beta Transus	1038 °C	1900 °F

References for this datasheet.