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

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Titanium Ti-6Al-4V (Grade 5), STA
Categories:	Metal; Nonferrous Metal; Titanium Alloy; Alpha/Beta Titanium Alloy
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 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. 4 other heat treatments of this alloy are listed in MatWeb.
Key Words:	Ti-6-4; UNS R56400; ASTM Grade 5 titanium; Ti6Al4V, Ti64, biomaterials, biomedical implants, biocompatibility
Vendors:	Visit metalmen for your metals needs. Products include special chemistry, tight tolerances, custom tempers, odd dimensions/forms, and small quantities. Phone 1-800-767-9494. Click here to view all available suppliers for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
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Physical Properties	Metric	English	Comments

Density	4.43 g/cc	0.160 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	379	379	Estimated from Rockwell C.
Hardness, Knoop	414	414	Estimated from Rockwell C.
Hardness, Rockwell C	41	41
Hardness, Vickers	396	396	Estimated from Rockwell C.
Tensile Strength, Ultimate	1170 MPa	170000 psi
Tensile Strength, Yield	1100 MPa	160000 psi
Elongation at Break	10 %	10 %
Creep Strength	210 MPa @Temperature 455 °C, Time >=23400 sec	30500 psi @Temperature 851 °F, Time >=6.50 hour	strain 0.1%
	300 MPa @Temperature 455 °C, Time >=360000 sec	43500 psi @Temperature 851 °F, Time >=100 hour	strain 1%
	450 MPa @Temperature 400 °C, Time >=36000 sec	65300 psi @Temperature 752 °F, Time >=10.0 hour	strain 0.1%
	575 MPa @Temperature 400 °C, Time >=360000 sec	83400 psi @Temperature 752 °F, Time >=100 hour	strain 1%
Rupture Strength	490 MPa @Temperature 455 °C, Time 450000 sec	71100 psi @Temperature 851 °F, Time 125 hour
	800 MPa @Temperature 400 °C, Time 288000 sec	116000 psi @Temperature 752 °F, Time 80.0 hour
Modulus of Elasticity	114 GPa	16500 ksi	Average of tension and compression
Compressive Yield Strength	1070 MPa	155000 psi
Notched Tensile Strength	1550 MPa	225000 psi	K_t (stress concentration factor) = 6.7
Ultimate Bearing Strength	2140 MPa	310000 psi	e/D = 2
Bearing Yield Strength	1790 MPa	260000 psi	e/D = 2
Poissons Ratio	0.33	0.33
Fatigue Strength	160 MPa @# of Cycles 1.00e+7	23200 psi @# of Cycles 1.00e+7	K_t (stress concentration factor) = 3.3
	400 MPa @# of Cycles 1.00e+7	58000 psi @# of Cycles 1.00e+7	notched bar
	460 MPa @# of Cycles 100000	66700 psi @# of Cycles 100000	notched bar
	680 MPa @# of Cycles 1.00e+6	98600 psi @# of Cycles 1.00e+6	smooth bar
	700 MPa @# of Cycles 1.00e+7	102000 psi @# of Cycles 1.00e+7	Unnotched
	730 MPa @# of Cycles 100000	106000 psi @# of Cycles 100000	smooth bar
Fracture Toughness	42.9 MPa-m½	39.0 ksi-in½
	43.0 MPa-m½	39.1 ksi-in½
Shear Modulus	44.0 GPa	6380 ksi
Shear Strength	760 MPa	110000 psi	Ultimate shear strength
Charpy Impact	23.0 J	17.0 ft-lb	V-notch

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.000178 ohm-cm	0.000178 ohm-cm
Magnetic Permeability	1.00005	1.00005	at 1.6 kA/m
Magnetic Susceptibility	0.0000033	0.0000033	cgs/g

Thermal Properties	Metric	English	Comments
CTE, linear	8.60 µm/m-°C @Temperature 20.0 - 100 °C	4.78 µin/in-°F @Temperature 68.0 - 212 °F
	9.20 µm/m-°C @Temperature 20.0 - 315 °C	5.11 µin/in-°F @Temperature 68.0 - 599 °F	average
	9.70 µm/m-°C @Temperature 20.0 - 650 °C	5.39 µin/in-°F @Temperature 68.0 - 1200 °F	average
Specific Heat Capacity	0.5263 J/g-°C	0.1258 BTU/lb-°F
Thermal Conductivity	6.70 W/m-K	46.5 BTU-in/hr-ft²-°F
Melting Point	1604 - 1660 °C	2919 - 3020 °F
Solidus	1604 °C	2919 °F
Liquidus	1660 °C	3020 °F
Beta Transus	980 °C	1800 °F

Component Elements Properties	Metric	English	Comments
Aluminum, Al	5.5 - 6.75 %	5.5 - 6.75 %
Carbon, C	<= 0.080 %	<= 0.080 %
Hydrogen, H	<= 0.015 %	<= 0.015 %
Iron, Fe	<= 0.40 %	<= 0.40 %
Nitrogen, N	<= 0.030 %	<= 0.030 %
Other, each	<= 0.050 %	<= 0.050 %
Other, total	<= 0.30 %	<= 0.30 %
Oxygen, O	<= 0.20 %	<= 0.20 %
Titanium, Ti	87.725 - 91 %	87.725 - 91 %	As Balance; Elemental Composition per ASTM B265
Vanadium, V	3.5 - 4.5 %	3.5 - 4.5 %

Descriptive Properties
Velocity of Sound	4.987 km/s		Heat treatment not specified

References for this datasheet.

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MTP642 / 14240

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