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Refractory Metals

Molybdenum, Mo, Annealed
Categories: Metal; Nonferrous Metal; Molybdenum Alloy; Pure Element
Material Notes: Physical Form: Gray-Black Metal; Cubic. Annealed applies only to tensile and hardness values; other property values are typical of the element.
Key Words: Moly
Vendors: Eagle Alloys Corporation is a leading supplier of quality metals and alloys. Our staff prides itself on working fast, efficiently and courteously to get you the information you need. Call (800) 237-9012 or visit www.EagleAlloys.com.

Elmet Technologies is a 100% US owned and operated, fully integrated manufacturer of Molybdenum, Tungsten and related alloys such as TZM, WHA & MoLa. At our 220,000 sqr/ft plant in Lewiston, Maine, Elmet manufactures W & Mo pure powders plus rod, wire, plate, sheet & foil in additional to offering fabrication and machining services. ITAR, ISO and AS9100 registered. www.elmettechnologies.com

PLANSEE SE: Whether it's high temperatures, aggressive chemicals or extreme mechanical loading: PLANSEE supplies a suitable product solution in refractory metals or composite materials. As the world market leader in powder metallurgically produced high performance materials we combine outstanding materials knowledge with profound applications and technology know-how. Visit us at www.plansee.com.

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Physical PropertiesMetricEnglishComments
Density 10.22 g/cc0.3692 lb/in³
a Lattice Constant 3.147 Å
@Temperature 25.0 °C		3.147 Å
@Temperature 77.0 °F		Body Centered Cubic
Vapor Pressure  0.00133 bar
@Temperature 3102 °C		1.00 torr
@Temperature 5616 °F
 0.0133 bar
@Temperature 3555 °C		10.0 torr
@Temperature 6431 °F
 0.133 bar
@Temperature 4109 °C		100 torr
@Temperature 7428 °F
 0.267 bar
@Temperature 4322 °C		200 torr
@Temperature 7812 °F
 0.533 bar
@Temperature 4553 °C		400 torr
@Temperature 8227 °F
 1.01 bar
@Temperature 4804 °C		760 torr
@Temperature 8679 °F
 
Chemical PropertiesMetricEnglishComments
Atomic Mass 95.9495.94
Atomic Number 4242
Atomic Volume 1.53e-0291.53e-029m^3
Thermal Neutron Cross Section 2.5 barns/atom2.5 barns/atom
X-ray Absorption Edge 0.61977 Å0.61977 ÅK
 4.32066 Å4.32066 ÅLI
 4.7133 Å4.7133 ÅLII
 4.9093 Å4.9093 ÅLIII
Electrode Potential -0.200 V-0.200 V
Electronegativity 2.162.16Pauling
Ionic Radius 0.620 Å0.620 ÅCrystal Ionic Radius for Valence +6
 0.700 Å0.700 ÅCrystal Ionic Radius for Valence +4
 0.930 Å0.930 ÅCrystal Ionic Radius for Valence +1
Electrochemical Equivalent 1.79 g/A/h1.79 g/A/h
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 225225Converted from Vickers for 3000 kg load/10 mm ball Brinell test. Annealed
Hardness, Rockwell A 6060Converted from Vickers. Annealed
Hardness, Rockwell B 9898Converted from Vickers. Annealed
Hardness, Rockwell C 1919Converted from Vickers. Annealed
Hardness, Vickers 230230Annealed
Tensile Strength, Ultimate 324 MPa47000 psiAnnealed
 350 MPa50800 psiSingle crystal
Modulus of Elasticity 330 GPa47900 ksi
 160 GPa
@Temperature 2000 °C		23200 ksi
@Temperature 3630 °F
 200 GPa
@Temperature 1800 °C		29000 ksi
@Temperature 3270 °F
 250 GPa
@Temperature 1400 °C		36300 ksi
@Temperature 2550 °F
 275 GPa
@Temperature 1000 °C		39900 ksi
@Temperature 1830 °F
Compressive Yield Strength 400 MPa58000 psi0.01% Yield
Bulk Modulus 272 GPa39500 ksi
Poissons Ratio 0.380.38calculated
Shear Modulus 120 GPa17400 ksi
Shear Strength 500 MPa72500 psitorsional strain rate 0.25/sec
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.00000570 ohm-cm0.00000570 ohm-cm
 0.00000520 ohm-cm
@Temperature 0.000 °C		0.00000520 ohm-cm
@Temperature 32.0 °F
 0.00000570 ohm-cm
@Temperature 27.0 °C		0.00000570 ohm-cm
@Temperature 80.6 °F
 0.0000239 ohm-cm
@Temperature 727 °C		0.0000239 ohm-cm
@Temperature 1340 °F
 0.0000292 ohm-cm
@Temperature 927 °C		0.0000292 ohm-cm
@Temperature 1700 °F
 0.0000352 ohm-cm
@Temperature 1127 °C		0.0000352 ohm-cm
@Temperature 2061 °F
 0.0000412 ohm-cm
@Temperature 1327 °C		0.0000412 ohm-cm
@Temperature 2421 °F
 0.0000472 ohm-cm
@Temperature 1527 °C		0.0000472 ohm-cm
@Temperature 2781 °F
 0.0000535 ohm-cm
@Temperature 1727 °C		0.0000535 ohm-cm
@Temperature 3141 °F
 0.0000595 ohm-cm
@Temperature 1927 °C		0.0000595 ohm-cm
@Temperature 3501 °F
 0.0000660 ohm-cm
@Temperature 2127 °C		0.0000660 ohm-cm
@Temperature 3861 °F
 0.0000692 ohm-cm
@Temperature 2227 °C		0.0000692 ohm-cm
@Temperature 4041 °F
 0.0000718 ohm-cm
@Temperature 2327 °C		0.0000718 ohm-cm
@Temperature 4221 °F
 0.0000782 ohm-cm
@Temperature 2527 °C		0.0000782 ohm-cm
@Temperature 4581 °F
 0.0000814 ohm-cm
@Temperature 2622 °C		0.0000814 ohm-cm
@Temperature 4752 °F
Magnetic Susceptibility 9.3e-79.3e-7cgs/g
Critical Magnetic Field Strength, Oersted 93 - 9993 - 99
Critical Superconducting Temperature 0.910 - 0.920 K0.910 - 0.920 K
 
Thermal PropertiesMetricEnglishComments
Heat of Fusion 293 J/g126 BTU/lb
Heat of Vaporization 5610 J/g2410 BTU/lb
CTE, linear  5.35 µm/m-°C
@Temperature 20.0 °C		2.97 µin/in-°F
@Temperature 68.0 °F
 6.00 µm/m-°C
@Temperature 0.000 - 250 °C		3.33 µin/in-°F
@Temperature 32.0 - 482 °F
 6.00 µm/m-°C
@Temperature 0.000 - 500 °C		3.33 µin/in-°F
@Temperature 32.0 - 932 °F
 6.50 µm/m-°C
@Temperature 0.000 - 1000 °C		3.61 µin/in-°F
@Temperature 32.0 - 1830 °F
Specific Heat Capacity 0.217 J/g-°C0.0519 BTU/lb-°FGas
 0.255 J/g-°C0.0609 BTU/lb-°F
Thermal Conductivity 138 W/m-K958 BTU-in/hr-ft²-°F
 100 W/m-K
@Temperature 1127 °C		694 BTU-in/hr-ft²-°F
@Temperature 2061 °F
 105 W/m-K
@Temperature 927 °C		729 BTU-in/hr-ft²-°F
@Temperature 1700 °F
 112 W/m-K
@Temperature 727 °C		777 BTU-in/hr-ft²-°F
@Temperature 1340 °F
 118 W/m-K
@Temperature 527 °C		819 BTU-in/hr-ft²-°F
@Temperature 981 °F
 126 W/m-K
@Temperature 327 °C		874 BTU-in/hr-ft²-°F
@Temperature 621 °F
 130 W/m-K
@Temperature 227 °C		902 BTU-in/hr-ft²-°F
@Temperature 441 °F
 134 W/m-K
@Temperature 127 °C		930 BTU-in/hr-ft²-°F
@Temperature 261 °F
 138 W/m-K
@Temperature 27.0 °C		958 BTU-in/hr-ft²-°F
@Temperature 80.6 °F
 143 W/m-K
@Temperature -73.0 °C		992 BTU-in/hr-ft²-°F
@Temperature -99.4 °F
 150 W/m-K
@Temperature -263 °C		1040 BTU-in/hr-ft²-°F
@Temperature -441 °F
 179 W/m-K
@Temperature -173 °C		1240 BTU-in/hr-ft²-°F
@Temperature -279 °F
 210 W/m-K
@Temperature -193 °C		1460 BTU-in/hr-ft²-°F
@Temperature -315 °F
 250 W/m-K
@Temperature -213 °C		1740 BTU-in/hr-ft²-°F
@Temperature -351 °F
 280 W/m-K
@Temperature -253 °C		1940 BTU-in/hr-ft²-°F
@Temperature -423 °F
 350 W/m-K
@Temperature -233 °C		2430 BTU-in/hr-ft²-°F
@Temperature -387 °F
Melting Point 2617 °C4743 °F
Boiling Point 4639 °C8382 °F
Heat of Formation 0.000 kJ/mol0.000 kJ/molCrystal
 658.1 kJ/mol658.1 kJ/molGas
 
Optical PropertiesMetricEnglishComments
Emissivity (0-1) 0.17
@Temperature 100 °C		0.17
@Temperature 212 °F		total spectrum
Reflection Coefficient, Visible (0-1) 0.460.46500 nm
 
Component Elements PropertiesMetricEnglishComments
Molybdenum, Mo 100 %100 %
 
Descriptive Properties
CAS Number7439-98-7
SolubilityInsoluble in H2O, diluted Acid and Alkaline

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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