Titanium Ti-11.5Mo-6Zr-4.5Sn, ST 720°C, Aged 495°C

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Titanium Ti-11.5Mo-6Zr-4.5Sn, ST 720°C, Aged 495°C
Categories:	Metal; Nonferrous Metal; Titanium Alloy; Beta Titanium Alloy
Material Notes:	Microstructure: Beta alloy, can be aged without forming intermetallic compounds. Characteristics: High strength, good hardenability, good resistance to stress corrosion, good cold-formability. Applications: Aircraft fasteners and sheet metal parts, to a lesser extent - plate and forging applications. 5 other heat treatments of this alloy are in MatWeb.
Key Words:	Ti Beta III; UNS R58030
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Physical Properties	Original Value	Comments

Density	5.06 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	369	Estimated from Rockwell C.
Hardness, Knoop	403	Estimated from Rockwell C.
Hardness, Rockwell C	40
Hardness, Vickers	386	Estimated from Rockwell C.
Tensile Strength	>= 1070 MPa @Temperature 371 °C
Tensile Strength, Ultimate	1240 MPa
Tensile Strength, Yield	1200 MPa
Elongation at Break	6.0 %
Reduction of Area	10 %
Creep Strength	689 MPa @Temperature 371 °C, Time >=3.60e+6 sec	strain 0.4%
Rupture Strength	1030 MPa @Temperature 371 °C, Time 3.60e+6 sec
Modulus of Elasticity	108 GPa
Modulus of Rigidity	40.7 GPa
Compressive Yield Strength	1280 MPa
Compressive Modulus	110 GPa
Notched Tensile Strength	1520 MPa	K_t (stress concentration factor) = 6.1
Poissons Ratio	0.31
Fatigue Strength	380 MPa @# of Cycles 1.00e+7	K_t (stress concentration factor) = 3.0
	590 MPa @# of Cycles 1.00e+7
	1000 MPa @# of Cycles 1.00e+6
Fracture Toughness	60.0 MPa-m½	K(IC)
Shear Modulus	41.0 GPa
Shear Strength	720 MPa	Ultimate shear strength
Charpy Impact	8.13 J

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.000156 ohm-cm
Magnetic Permeability	1.0

Thermal Properties	Original Value	Comments
CTE, linear	7.60 µm/m-°C @Temperature 20.0 - 100 °C
	8.10 µm/m-°C @Temperature 20.0 - 315 °C	average
	8.70 µm/m-°C @Temperature 20.0 - 540 °C	average
Specific Heat Capacity	0.525 J/g-°C	Typical value for titanium alloys.
Thermal Conductivity	6.28 W/m-K
Melting Point	1573 - 1690 °C
Solidus	1573 °C
Liquidus	1690 °C
Beta Transus	760 °C	Slow transition kinetics

Component Elements Properties	Original Value	Comments
Carbon, C	<= 0.080 %
	<= 0.10 %
Hydrogen, H	<= 0.020 %
	<= 0.020 %
Iron, Fe	<= 0.35 %
	<= 0.35 %
Nitrogen, N	<= 0.050 %
	<= 0.050 %
Other, each	<= 0.010 %
	<= 0.050 %
Other, total	<= 0.040 %
	<= 0.30 %
Oxygen, O	<= 0.18 %
	<= 0.18 %
Tin, Sn	3.75 - 5.25 %
Titanium, Ti	86.27 - 91.75 %	As Balance; Elemental Composition per ASTM B265
Zirconium, Zr	4.5 - 7.5 %

References for this datasheet.

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MTB031 / 14153

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