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	Metric	English	Comments

Density	4.73 g/cc	0.171 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	318	318	Estimated from Rockwell C.
Hardness, Knoop	346	346	Estimated from Rockwell C.
Hardness, Rockwell C	34	34
Hardness, Vickers	333	333	Estimated from Rockwell C.
Tensile Strength, Ultimate	900 MPa	131000 psi
Tensile Strength, Yield	810 MPa	117000 psi
Elongation at Break	14 %	14 %
Reduction of Area	32 %	32 %
Creep Strength	200 MPa @Temperature 425 °C, Time >=21600 sec	29000 psi @Temperature 797 °F, Time >=6.00 hour	strain 0.5%
	200 MPa @Temperature 425 °C, Time >=2880 sec	29000 psi @Temperature 797 °F, Time >=0.800 hour	strain 0.1%
	400 MPa @Temperature 370 °C, Time >=216000 sec	58000 psi @Temperature 698 °F, Time >=60.0 hour	strain 0.5%
	400 MPa @Temperature 370 °C, Time >=21600 sec	58000 psi @Temperature 698 °F, Time >=6.00 hour	strain 0.1%
Rupture Strength	>= 250 MPa @Temperature 425 °C, Time 360000 sec	>= 36300 psi @Temperature 797 °F, Time 100 hour
	600 MPa @Temperature 370 °C, Time 360000 sec	87000 psi @Temperature 698 °F, Time 100 hour
	>= 800 MPa @Temperature 315 °C, Time 360000 sec	>= 116000 psi @Temperature 599 °F, Time 100 hour
Modulus of Elasticity	115 GPa	16700 ksi	Typical value for annealed alpha/beta titanium alloy.
Modulus of Rigidity	48.3 GPa	7010 ksi
Compressive Yield Strength	875 MPa	127000 psi
Poissons Ratio	0.33	0.33	Typical for alpha-beta titanium alloy.
Fatigue Strength	210 MPa @# of Cycles 1.00e+7	30500 psi @# of Cycles 1.00e+7	Rotating Beam. K_t (stress concentration factor) = 3.0
	400 MPa @# of Cycles 10000	58000 psi @# of Cycles 10000	Rotating Beam. K_t (stress concentration factor) = 3.0
	585 MPa @# of Cycles 1.00e+7	84800 psi @# of Cycles 1.00e+7	Unnotched Sheet
	800 MPa @# of Cycles 2000	116000 psi @# of Cycles 2000	unnotched
Shear Modulus	43.2 GPa	6270 ksi	Calculated from typical values.
Bend Radius, Minimum	3.0 t	3.0 t

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

Thermal Properties	Metric	English	Comments
CTE, linear	8.60 µm/m-°C @Temperature 20.0 - 100 °C	4.78 µin/in-°F @Temperature 68.0 - 212 °F
	9.70 µm/m-°C @Temperature 20.0 - 315 °C	5.39 µin/in-°F @Temperature 68.0 - 599 °F	average
	11.7 µm/m-°C @Temperature 20.0 - 650 °C	6.50 µin/in-°F @Temperature 68.0 - 1200 °F	average
Specific Heat Capacity	0.495 J/g-°C	0.118 BTU/lb-°F
Thermal Conductivity	10.9 W/m-K @Temperature 20.0 °C	75.6 BTU-in/hr-ft²-°F @Temperature 68.0 °F
	12.8 W/m-K @Temperature 205 °C	88.8 BTU-in/hr-ft²-°F @Temperature 401 °F
	15.2 W/m-K @Temperature 425 °C	105 BTU-in/hr-ft²-°F @Temperature 797 °F
	17.8 W/m-K @Temperature 650 °C	124 BTU-in/hr-ft²-°F @Temperature 1200 °F
Melting Point	1565 °C	2849 °F
Solidus	1300 °C	2370 °F
Liquidus	1635 °C	2975 °F
Beta Transus	785 - 815 °C	1450 - 1500 °F

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

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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