Titanium Ti-5Al-2Sn-2Zr-4Mo-4Cr (Ti-17) Alpha-Beta Processed

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Titanium Ti-5Al-2Sn-2Zr-4Mo-4Cr (Ti-17) Alpha-Beta Processed
Categories:	Metal; Nonferrous Metal; Titanium Alloy; Alpha/Beta Titanium Alloy
Material Notes:	Information provided by Allvac and the references. Beta Transus 890ºC ; Alpha-Beta Alloy; Double Solution Treated 860ºC, 2h; 800ºC, 4h; Aged 620ºC, 8h. Applications: Compressor discs, heavy section forgings for gas turbine engine components. Characteristics: High tensile strength, good crack growth/fatigue resistance and good fracture toughness. Forms typically available: Billet and bar. 1 other heat treatment of this alloy is in MatWeb.
Key Words:	UNS R58650
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Physical Properties	Metric	English	Comments

Density	4.65 g/cc	0.168 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	369	369	Estimated from Rockwell C.
Hardness, Knoop	403	403	Estimated from Rockwell C.
Hardness, Rockwell C	40	40
Hardness, Vickers	386	386	Estimated from Rockwell C.
Tensile Strength	1000 MPa @Temperature 316 °C	145000 psi @Temperature 601 °F
Tensile Strength, Ultimate	1185 MPa	171900 psi
Tensile Strength, Yield	1140 MPa	165000 psi
Elongation at Break	8.0 %	8.0 %
Creep Strength	724 MPa @Temperature 316 °C, Time >=3.60e+6 sec	105000 psi @Temperature 601 °F, Time >=1000 hour	strain 0.2%
Rupture Strength	910 MPa @Temperature 316 °C, Time 3.60e+6 sec	132000 psi @Temperature 601 °F, Time 1000 hour
Modulus of Elasticity	115 GPa	16700 ksi
Notched Tensile Strength	1480 MPa	215000 psi	K_t (stress concentration factor) = 4.0
Poissons Ratio	0.33	0.33	Typical for alpha-beta titanium alloy.
Fatigue Strength	725 MPa @# of Cycles 100000	105000 psi @# of Cycles 100000	disk forging
	745 MPa @# of Cycles 5000	108000 psi @# of Cycles 5000	disk forging
Fracture Toughness	35.0 MPa-m½	31.9 ksi-in½	K(IC)
Shear Modulus	43.2 GPa	6270 ksi	Calculated from typical values.

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.000160 ohm-cm	0.000160 ohm-cm	Estimated from similar alpha-beta titanium alloys.

Thermal Properties	Metric	English	Comments
CTE, linear	8.50 µm/m-°C @Temperature 20.0 - 100 °C	4.72 µin/in-°F @Temperature 68.0 - 212 °F	Typical alpha-beta titanium alloy
	9.70 µm/m-°C @Temperature 20.0 - 400 °C	5.39 µin/in-°F @Temperature 68.0 - 752 °F	average
Specific Heat Capacity	0.525 J/g-°C	0.125 BTU/lb-°F	Typical value for titanium alloys.
Thermal Conductivity	7.80 W/m-K	54.1 BTU-in/hr-ft²-°F
Beta Transus	890 °C	1630 °F

Component Elements Properties	Metric	English	Comments
Aluminum, Al	5.0 %	5.0 %
Chromium, Cr	4.0 %	4.0 %
Hydrogen, H	<= 0.0125 %	<= 0.0125 %
Iron, Fe	<= 0.30 %	<= 0.30 %
Molybdenum, Mo	4.0 %	4.0 %
Nitrogen, N	<= 0.040 %	<= 0.040 %
Oxygen, O	0.080 - 0.13 %	0.080 - 0.13 %
Tin, Sn	2.0 %	2.0 %
Titanium, Ti	83 %	83 %
Zirconium, Zr	2.0 %	2.0 %

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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MTP171 / 14227

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