Titanium Ti-8Mn, Annealed

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Titanium Ti-8Mn, Annealed
Categories:	Metal; Nonferrous Metal; Titanium Alloy; Alpha/Beta Titanium Alloy
Material Notes:	Annealed 705ºC. Alpha-Beta Alloy. Not weldable. Applications: Aircraft, structural parts
Key Words:	UNS R56080
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Physical Properties	Original Value	Comments

Density	4.73 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	900 MPa
Tensile Strength, Yield	810 MPa
Elongation at Break	14 %
Reduction of Area	32 %
Creep Strength	200 MPa @Temperature 425 °C, Time >=21600 sec	strain 0.5%
	200 MPa @Temperature 425 °C, Time >=2880 sec	strain 0.1%
	400 MPa @Temperature 370 °C, Time >=216000 sec	strain 0.5%
	400 MPa @Temperature 370 °C, Time >=21600 sec	strain 0.1%
Rupture Strength	>= 250 MPa @Temperature 425 °C, Time 360000 sec
	600 MPa @Temperature 370 °C, Time 360000 sec
	>= 800 MPa @Temperature 315 °C, Time 360000 sec
Modulus of Elasticity	115 GPa	Typical value for annealed alpha/beta titanium alloy.
Modulus of Rigidity	48.3 GPa
Compressive Yield Strength	875 MPa
Poissons Ratio	0.33	Typical for alpha-beta titanium alloy.
Fatigue Strength	210 MPa @# of Cycles 1.00e+7	Rotating Beam. K_t (stress concentration factor) = 3.0
	400 MPa @# of Cycles 10000	Rotating Beam. K_t (stress concentration factor) = 3.0
	585 MPa @# of Cycles 1.00e+7	Unnotched Sheet
	800 MPa @# of Cycles 2000	unnotched
Shear Modulus	43.2 GPa	Calculated from typical values.
Bend Radius, Minimum	3.0 t

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000920 ohm-cm
Magnetic Permeability	1.00005	at 1.6 kA/m

Thermal Properties	Original Value	Comments
CTE, linear	8.60 µm/m-°C @Temperature 20.0 - 100 °C
	9.70 µm/m-°C @Temperature 20.0 - 315 °C	average
	11.7 µm/m-°C @Temperature 20.0 - 650 °C	average
Specific Heat Capacity	0.495 J/g-°C
Thermal Conductivity	10.9 W/m-K @Temperature 20.0 °C
	12.8 W/m-K @Temperature 205 °C
	15.2 W/m-K @Temperature 425 °C
	17.8 W/m-K @Temperature 650 °C
Melting Point	1565 °C
Solidus	1300 °C
Liquidus	1635 °C
Beta Transus	785 - 815 °C

Component Elements Properties	Original Value	Comments
Carbon, C	<= 0.20 %
Hydrogen, H	<= 0.015 %
Manganese, Mn	8.0 %
Nitrogen, N	<= 0.070 %
Oxygen, O	<= 0.20 %
Titanium, Ti	92 %

References for this datasheet.

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