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	Original Value	Comments

Density	4.43 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	379	Estimated from Rockwell C.
Hardness, Knoop	414	Estimated from Rockwell C.
Hardness, Rockwell C	41
Hardness, Vickers	396	Estimated from Rockwell C.
Tensile Strength, Ultimate	1170 MPa
Tensile Strength, Yield	1100 MPa
Elongation at Break	10 %
Creep Strength	210 MPa @Temperature 455 °C, Time >=23400 sec	strain 0.1%
	300 MPa @Temperature 455 °C, Time >=360000 sec	strain 1%
	450 MPa @Temperature 400 °C, Time >=36000 sec	strain 0.1%
	575 MPa @Temperature 400 °C, Time >=360000 sec	strain 1%
Rupture Strength	490 MPa @Temperature 455 °C, Time 450000 sec
	800 MPa @Temperature 400 °C, Time 288000 sec
Modulus of Elasticity	114 GPa	Average of tension and compression
Compressive Yield Strength	1070 MPa
Notched Tensile Strength	1550 MPa	K_t (stress concentration factor) = 6.7
Ultimate Bearing Strength	2140 MPa	e/D = 2
Bearing Yield Strength	1790 MPa	e/D = 2
Poissons Ratio	0.33
Fatigue Strength	160 MPa @# of Cycles 1.00e+7	K_t (stress concentration factor) = 3.3
	400 MPa @# of Cycles 1.00e+7	notched bar
	460 MPa @# of Cycles 100000	notched bar
	680 MPa @# of Cycles 1.00e+6	smooth bar
	700 MPa @# of Cycles 1.00e+7	Unnotched
	730 MPa @# of Cycles 100000	smooth bar
Fracture Toughness	42.9 MPa-m½
	43.0 MPa-m½
Shear Modulus	44.0 GPa
Shear Strength	760 MPa	Ultimate shear strength
Charpy Impact	23.0 J	V-notch

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

Thermal Properties	Original Value	Comments
CTE, linear	8.60 µm/m-°C @Temperature 20.0 - 100 °C
	9.20 µm/m-°C @Temperature 20.0 - 315 °C	average
	9.70 µm/m-°C @Temperature 20.0 - 650 °C	average
Specific Heat Capacity	0.5263 J/g-°C
Thermal Conductivity	6.70 W/m-K
Melting Point	1604 - 1660 °C
Solidus	1604 °C
Liquidus	1660 °C
Beta Transus	980 °C

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