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

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, DA, UNS R54810; Ti-811

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

Material Notes:
Information provided by Allvac and the references. Duplex Anneal: 980ºC 4h; air cool; 540ºC 24 h; air cool.

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	326	326	Estimated from Rockwell C.
Hardness, Knoop	354	354	Estimated from Rockwell C.
Hardness, Rockwell C	35	35
Hardness, Vickers	341	341	Estimated from Rockwell C.
Tensile Strength, Ultimate	900 - 1000 MPa	131000 - 145000 psi
Tensile Strength, Yield	830 - 951 MPa	120000 - 138000 psi
Modulus of Elasticity	124 GPa	18000 ksi
Poisson's Ratio	0.32	0.32
Charpy Impact	20 - 34 J	14.8 - 25.1 ft-lb	V-notch
Fatigue Strength	620 MPa	89900 psi	3,000,000 cycles, Unnotched
Fatigue Strength	724 MPa	105000 psi	at 85,000 Cycles
Fracture Toughness	176 MPa-m½	160 ksi-in½	K(IC)
Fracture Toughness	374 MPa-m½	340 ksi-in½	K(C)
Shear Modulus	46 GPa	6670 ksi
Electrical Properties
Electrical Resistivity	0.000198 ohm-cm	0.000198 ohm-cm
Thermal Properties
CTE, linear 20°C	8.5 µm/m-°C	4.72 µin/in-°F
CTE, linear 250°C	9.2 µm/m-°C	5.11 µin/in-°F
CTE, linear 500°C	10.1 µm/m-°C	5.61 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.