Titanium Ti-3Al-2.5V (Grade 9), alpha annealed

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Titanium Ti-3Al-2.5V (Grade 9), alpha annealed
Categories:	Metal; Nonferrous Metal; Titanium Alloy; Alpha/Near Alpha Titanium Alloy
Material Notes:	Information provided by Allvac and the references. Alpha annealed. High strength-to-weight ratio, lighter than stainless steel. Good corrosion resistance in mildly reducing to highly oxidizing media Applications: Excellent cold formability, 20-50% higher tensile properties than CP titanium grades. Primarily used in aircraft hydraulic systems. Forms typically available: Sheet, strip, foil and tubing. 3 other heat treatments of this alloy are in MatWeb.
Key Words:	Ti3Al2.5V, UNS R56320; ASTM Grade 9; Half 6-4; Tubing Alloy
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Physical Properties	Metric	English	Comments

Density	4.48 g/cc	0.162 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	256	256	Estimated from Rockwell C.
Hardness, Knoop	278	278	Estimated from Rockwell C.
Hardness, Rockwell C	24	24
Hardness, Vickers	280	280
Tensile Strength, Ultimate	620 MPa	89900 psi
Tensile Strength, Yield	500 MPa	72500 psi
Elongation at Break	15 %	15 %
Tensile Modulus	100 GPa	14500 ksi
	80.0 GPa @Temperature 230 °C	11600 ksi @Temperature 446 °F
Compressive Yield Strength	690 MPa	100000 psi
Notched Tensile Strength	790 MPa	115000 psi	K_t (stress concentration factor) = 6.3
Poissons Ratio	0.30	0.30
Fatigue Strength	170 MPa @# of Cycles 1.00e+7	24700 psi @# of Cycles 1.00e+7	K_t (stress concentration factor) = 1.8
	280 MPa @# of Cycles 50000	40600 psi @# of Cycles 50000	K_t (stress concentration factor) = 1.8
	280 MPa @# of Cycles 1.00e+7	40600 psi @# of Cycles 1.00e+7	unnotched
	380 MPa @# of Cycles 40000	55100 psi @# of Cycles 40000	unnotched
Fracture Toughness	100 MPa-m½	91.0 ksi-in½	kJ/m² for J(IC)
Shear Modulus	44.0 GPa	6380 ksi
Charpy Impact	86.0 J	63.4 ft-lb	V-notch

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.000127 ohm-cm	0.000127 ohm-cm

Thermal Properties	Metric	English	Comments
CTE, linear	9.61 µm/m-°C @Temperature 20.0 - 95.0 °C	5.34 µin/in-°F @Temperature 68.0 - 203 °F
	9.67 µm/m-°C @Temperature 20.0 - 205 °C	5.37 µin/in-°F @Temperature 68.0 - 401 °F
	9.86 µm/m-°C @Temperature 20.0 - 315 °C	5.48 µin/in-°F @Temperature 68.0 - 599 °F
	9.97 µm/m-°C @Temperature 20.0 - 540 °C	5.54 µin/in-°F @Temperature 68.0 - 1000 °F	average
Specific Heat Capacity	0.525 J/g-°C	0.125 BTU/lb-°F	Typical value for titanium alloys.
Thermal Conductivity	8.30 W/m-K @Temperature 23.0 °C	57.6 BTU-in/hr-ft²-°F @Temperature 73.4 °F
	11.8 W/m-K @Temperature 315 °C	81.9 BTU-in/hr-ft²-°F @Temperature 599 °F
Melting Point	<= 1700 °C	<= 3090 °F
Solidus	1704 °C	3099 °F
Liquidus	1700 °C	3090 °F
Beta Transus	935 °C	1720 °F

Component Elements Properties	Metric	English	Comments
Aluminum, Al	2.5 - 3.5 %	2.5 - 3.5 %
Carbon, C	<= 0.050 %	<= 0.050 %
Hydrogen, H	<= 0.015 %	<= 0.015 %
Iron, Fe	<= 0.20 %	<= 0.20 %
Nitrogen, N	<= 0.030 %	<= 0.030 %
Other, each	<= 0.050 %	<= 0.050 %
Other, total	<= 0.30 %	<= 0.30 %
Oxygen, O	<= 0.15 %	<= 0.15 %
Titanium, Ti	92.755 - 95.5 %	92.755 - 95.5 %	As Balance; Elemental Composition per ASTM B265
Vanadium, V	2.0 - 3.0 %	2.0 - 3.0 %

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 consistent 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 terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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MTA321 / 14123

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