Titanium Ti-6Al-2Sn-2Zr-2Mo-2Cr-.25Si, STA

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Titanium Ti-6Al-2Sn-2Zr-2Mo-2Cr-.25Si, STA
Categories:	Metal; Nonferrous Metal; Titanium Alloy; Alpha/Beta Titanium Alloy
Material Notes:	Alpha-Beta Alloy. High strength and fracture toughness. Lower density, deep-hardenable. Welding is not recommended. Applications: Aerospace - thick-section components Forms typically available: Billet, bar and plate 3 other heat treatments of this alloy are in MatWeb.
Key Words:	Ti-6-22-22-S
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Physical Properties	Original Value	Comments

Density	4.65 g/cc

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	1280 MPa
Tensile Strength, Yield	1140 MPa
Elongation at Break	11 %
Modulus of Elasticity	122 GPa
Poissons Ratio	0.327
Fatigue Strength	290 MPa @# of Cycles 1.00e+7	K_t (stress concentration factor) = 3.0; R = 0.1
	520 MPa @# of Cycles 1.00e+7	unnotched
	870 MPa @# of Cycles 1000	K_t (stress concentration factor) = 3.0; R = 0.1
	1160 MPa @# of Cycles 1000	unnotched
Shear Modulus	46.0 GPa
Charpy Impact	20.0 J	V-notch

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.000160 ohm-cm	Estimated from similar materials

Thermal Properties	Original Value	Comments
CTE, linear	9.20 µm/m-°C @Temperature 20.0 - 315 °C	average
	9.40 µm/m-°C @Temperature 20.0 - 100 °C	After alpha/beta treatment + age
Specific Heat Capacity	0.500 J/g-°C	Estimated from similar materials
Thermal Conductivity	7.00 W/m-K	Estimated from similar materials
Melting Point	<= 1650 °C	Estimated from similar materials
Liquidus	1650 °C	Estimated from similar materials
Beta Transus	960 °C

Component Elements Properties	Original Value	Comments
Aluminum, Al	6.0 %
Carbon, C	<= 0.040 %
Chromium, Cr	2.0 %
Iron, Fe	<= 0.25 %
Molybdenum, Mo	2.0 %
Nitrogen, N	<= 0.030 %
Oxygen, O	<= 0.14 %
Silicon, Si	0.25 %
Tin, Sn	2.0 %
Titanium, Ti	86 %
Zirconium, Zr	2.0 %

References for this datasheet.

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MTP221 / 14229

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