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. %
Al8 
Mo1 
Ti90 
V1 

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

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

Physical PropertiesMetricEnglishComments
Density4.37 g/cc0.158 lb/in 

Mechanical Properties
Hardness, Brinell326326 Estimated from Rockwell C.
Hardness, Knoop354354 Estimated from Rockwell C.
Hardness, Rockwell C3535 
Hardness, Vickers341341 Estimated from Rockwell C.
Tensile Strength, Ultimate900 - 1000 MPa131000 - 145000 psi 
Tensile Strength, Yield830 - 951 MPa120000 - 138000 psi 
Modulus of Elasticity124 GPa18000 ksi 
Poisson's Ratio0.320.32 
Charpy Impact20 - 34 J14.8 - 25.1 ft-lb V-notch
Fatigue Strength620 MPa89900 psi 3,000,000 cycles, Unnotched
Fatigue Strength724 MPa105000 psi at 85,000 Cycles
Fracture Toughness176 MPa-m160 ksi-in K(IC)
Fracture Toughness374 MPa-m340 ksi-in K(C)
Shear Modulus46 GPa6670 ksi 

Electrical Properties
Electrical Resistivity0.000198 ohm-cm0.000198 ohm-cm 

Thermal Properties
CTE, linear 20C8.5 m/m-C4.72 in/in-F 
CTE, linear 250C9.2 m/m-C5.11 in/in-F 
CTE, linear 500C10.1 m/m-C5.61 in/in-F 
Specific Heat Capacity0.502 J/g-C0.12 BTU/lb-F 
Thermal Conductivity6 W/m-K41.6 BTU-in/hr-ft-F 
Melting PointMax 1540 CMax 2800 F Liquidus
Liquidus1540 C2800 F 
Beta Transus1038 C1900 F 

References for this datasheet.


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