Molybdenum Overview
Like tungsten, molybdenum is one of the refractory metals. It does not have the density of tungsten, but still has a relativelyhigh melting pointand is somewhat easier to machine. Midwest Tungsten Service provides molybdenum in rod, sheet, and bar. We also provide material trays, heat shields, nuts, and threaded rod for the vacuum furnace industry, as well as glass melting electrodes and vacuum evaporation boats.
Molybdenum Properties & Uses
Molybdenum Advantages
Molybdenum Advantages
- High melting point
Molybdenum Applications
Molybdenum Applications
- Vacuum furnace hardware
Molybdenum Properties
Molybdenum Properties
| Atomic Number | 42 |
| Atomic Weight | 95.95 |
| Group Number | 6 |
| Electron Configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d5 5s1 |
| CAS Registry Number | 7439-98-7 |
| Wire Atomic Volume” | 9.41 |
| Lattice Type | Body Centered Cube |
| Lattice Constant at 20C, Angstroms | 3.1468 |
| Natural Isotopes | 92, 94, 95, 96, 97, 98, 100 |
| Density at 20C (gm/cc) | 10.2 |
| Density at 20C (lb./cu. in.) | 0.368 |
| Melting Point C | 2610 |
| Boiling Point C | 4830 |
| Linear Coefficient of Expansion per C | 4.9 x 10E-6 |
| Thermal Conductivity at 20 C (cal/cm/C/sec) | 0.35 |
| Specific Heat @ 20 C (cal/gram/C) | 0.061 |
| Electronegativity (eV) Pauling | 2.16 |
| Electronegativity (eV) Sanderson | 1.15 |
| Electronegativity (eV) Alfred Rochow | 1.30 |
| Electronegativity Conductivity, % IACS | 30 |
| Electrical Resistivity @ 20C (microhm-cm) | 5.7 |
| Temperature Coefficient of Electrical Resistivity Per C (0-100 C) | 0.0046 |
| Tensile Strength @ Room Temperature, psi | 85,000 - 120,000 (stress relieved); 60,000 - 75,000 (recrystallized) |
| ASTM B387 Minimum Tensile Strength, stress-relieved rod, psi | 65,000 - 90,000, depending on diameter |
| Tensile Strength @ 500 C, psi | 35,000 - 65,000 |
| Tensile Strength @ 1000 C, psi | 20,000 - 30,000 |
| Poisson's Ratio | 0.321 |
| Hardness (Mineral) | 5.5 |
| Hardness (Vickers) | 230 |
| Hardness (Brinell) | 225 |
| Total Emissivity @ 1500 C | 0.19 |
| Total Emissivity @ 2000 C | 0.24 |
| Working Temperature, C | <1600 |
| Recrystallization Temperature, C | 900 - 1200 |
Typical values from published producer data and ASTM standards; actual properties depend on product form, size and condition. Material certifications are available on request with purchase.
Custom Molybdenum Solutions
While tungsten’s extreme hardness and high melting point make it notoriously difficult to machine, our experienced team specializes in taming this "unmachinable" metal. Using a combination of multi-axis CNC milling and advanced EDM drilling, we manufacture complex tungsten components to your exact prints with tolerances as tight as ±0.0005". Whether you need custom-sized raw materials or intricate finished parts, we deliver precision-engineered solutions with industry-leading speed.
Molybdenum Resources
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Molybdenum Vacuum Furnace Hardware and Components
Midwest Tungsten Service manufactures high-temperature furnace components of molybdenum (including TZM and Lanthanum-doped moly), tungsten and tantalum.
