Titanium Ti-6Al-4V (Grade 5), STA Bar


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

Close Analogs: 4 other heat treatments of this alloy are listed in MatWeb.

Key Words: Ti-6-4; UNS R56400; ASTM Grade 5 titanium; UNS R56401 (ELI); Ti6Al4V, biomaterials, biomedical implants, biocompatibility

Component   Wt. %
Al6 
FeMax 0.25 
OMax 0.2 
Ti90 
V4 

Material Notes:
Information provided by Allvac and the references. Solution Treated 900-955ºC, Aged 540ºC. Alpha-Beta Alloy

Applications: Blades, discs, rings, airframe, fasteners, components. Vessels, cases, hubs, forgings.. Biomedical implants.

Biocompatibility: Excellent, especially when direct contact with tissue or bone is required. Ti-6Al-4V's poor shear strength makes it undesirable for bone screws or plates. It also has poor surface wear properties and tends to seize when in sliding contact with itself and other metals. Surface treatments such as nitriding and oxidizing can improve the surface wear properties.

Physical PropertiesMetricEnglishComments
Density4.43 g/cc0.16 lb/in³ 

Mechanical Properties
Hardness, Brinell360360 Estimated from Rockwell C.
Hardness, Knoop392392 Estimated from Rockwell C.
Hardness, Rockwell C3939 
Hardness, Vickers376376 Estimated from Rockwell C.
Tensile Strength, Ultimate1035 MPa150000 psi 
Tensile Strength, Yield965 MPa140000 psi 
Elongation at Break8 %8 % 
Reduction of Area50 %50 % 
Modulus of Elasticity114 GPa16500 ksi Average of tension and compression
Compressive Yield Strength1070 MPa155000 psi 
Poisson's Ratio0.330.33 
Fatigue Strength700 MPa102000 psi Smooth, 10,000,000 Cycles
Shear Modulus44 GPa6380 ksi 

Electrical Properties
Electrical Resistivity0.000178 ohm-cm0.000178 ohm-cm 
Magnetic Permeability1.000051.00005 at 1.6 kA/m
Magnetic Susceptibility3.3e-0063.3e-006 cgs/g

Thermal Properties
CTE, linear 20°C8.6 µm/m-°C4.78 µin/in-°F 20-100ºC
CTE, linear 250°C9.2 µm/m-°C5.11 µin/in-°F Average over the range 20-315ºC
CTE, linear 500°C9.7 µm/m-°C5.39 µin/in-°F Average over the range 20-650ºC
Specific Heat Capacity0.5263 J/g-°C0.126 BTU/lb-°F 
Thermal Conductivity6.7 W/m-K46.5 BTU-in/hr-ft²-°F 
Melting Point1604 - 1660 °C2920 - 3020 °F 
Solidus1604 °C2920 °F 
Liquidus1660 °C3020 °F 
Beta Transus980 °C1800 °F 

References for this datasheet.


Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistant format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's disclaimer and terms of use regarding this information. MatWeb data and tools provided by MatWeb, LLC.