Titanium Ti-6Al-2Sn-4Zr-2Mo-0.1Si; Duplex Annealed

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Titanium Ti-6Al-2Sn-4Zr-2Mo-0.1Si; Duplex Annealed
Categories:	Metal; Nonferrous Metal; Titanium Alloy; Alpha/Near Alpha Titanium Alloy
Material Notes:	Information provided by Allvac and the references. Excellent creep resistance, good tensile strength, toughness and high temperature stability. Properties highly dependent on heat treatment. Applications: High-temp jet engines. Blades, discs, spacers, seals. High performance automotive valves. Forms Typically available: Billet, bar, plate, sheet, strip and extrusions.
Key Words:	Ti-6242Si; Ti-6242S; UNS R54620
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Physical Properties	Original Value	Comments

Density	4.54 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	318	Estimated from Rockwell C.
Hardness, Knoop	346	Estimated from Rockwell C.
Hardness, Rockwell C	34
Hardness, Vickers	333	Estimated from Rockwell C.
Tensile Strength, Ultimate	1110 MPa
Tensile Strength, Yield	1050 MPa
Elongation at Break	13 %
Reduction of Area	30 %
Modulus of Elasticity	118 GPa
Compressive Modulus	118 GPa
Notched Tensile Strength	1025 MPa	K_t >17; Average of longitudinal and transverse.
Ultimate Bearing Strength	1800 MPa	e/D = 2.0; varies with thickness; this value is at about 2.4 mm.
Bearing Yield Strength	1450 MPa	e/D = 2.0
Poissons Ratio	0.325
Fatigue Strength	225 MPa @# of Cycles 1.00e+7	K_t = 3
	320 MPa @# of Cycles 50000	K_t = 3
	610 MPa @# of Cycles 1.00e+7	A=0.67
	750 MPa @# of Cycles 500000	A = 0.67
Shear Modulus	44.5 GPa	Calculated
Charpy Impact	36.0 J	V-Notch, oxygen content about 0.1%. Value drops with increasing O content.

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.000190 ohm-cm

Thermal Properties	Original Value	Comments
CTE, linear	7.70 µm/m-°C @Temperature 0.000 - 100 °C
	7.70 µm/m-°C @Temperature 205 °C
	8.10 µm/m-°C @Temperature 315 - 540 °C	average
Specific Heat Capacity	0.460 J/g-°C
Thermal Conductivity	7.00 W/m-K
Melting Point	<= 1705 °C
Liquidus	1705 °C
Maximum Service Temperature, Air	425 °C	continuous use
	565 °C	intermittent use
Beta Transus	995 °C

Component Elements Properties	Original Value	Comments
Aluminum, Al	5.5 - 6.5 %
Carbon, C	<= 0.050 %
Hydrogen, H	<= 0.015 %
Iron, Fe	<= 0.25 %
Molybdenum, Mo	1.8 - 2.2 %
Nitrogen, N	<= 0.050 %
Other, each	<= 0.10 %
Other, total	<= 0.30 %
Oxygen, O	<= 0.15 %
Silicon, Si	0.060 - 0.10 %
Tin, Sn	1.8 - 2.2 %
Titanium, Ti	83.785 - 87.24 %	As Balance; Elemental Composition per ASTM B265
Zirconium, Zr	3.6 - 4.4 %

References for this datasheet.

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MTA081 / 14114

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