Tantalum (Ta) is a refractory metal. Tantalum is quite soft compared to tungsten or even molybdenum. The density and melting point of tantalum lie between those of tungsten and molybdenum.
Tantalum is often used in capacitors or other electronic devices and is also used to alloy other metals. Its high corrosion resistance is useful in chemical reaction pipes and vessels such as vacuum furnaces and nuclear reactors, allowing corrosion-resistant properties at high temperatures while minimizing product contamination. Its high thermal conductivity is useful in equipment such as heat exchangers and distillation equipment.
We offer the following grades, to ASTM B708:
R05200, unalloyed tantalum, electron-beam furnace or vacuum-arc melt, or both,
R05400, unalloyed tantalum, powder-metallurgy consolidation,
R05255, tantalum alloy, 90 % tantalum, 10 % tungsten, electron-beam furnace of vacuum-arc melt, or both,
R05252, tantalum alloy, 97.5 % tantalum, 2.5 % tungsten, electron-beam furnace or vacuum-arc melt, or both, and
R05240, tantalum alloy, 60 % tantalum, 40 % niobium, electron-beam furnace or vacuum-arc melt.
- High density and melting point
- High corrosion resistance
- High thermal conductivity
- Capacitors or electronic devices
- Chemical reaction pipes
- Nuclear reactors
- Heat exchangers
- Distillation equipment
Have Technical Questions?
We’re available to answer any questions regarding our products or services and provide quotes for custom projects. We look forward to hearing from you.
Tip-top Top Tips
Our tops are designed to spin for a long time. There can be a learning curve for some people due to the density of our tungsten tops. Your spinning abilities will improve over time; with practice you will get a fast, balanced, and long-lasting spin.
TIG Welding with Inverters vs Transformers
A question we often get is "I have an inverter (or transformer) unit, which tungsten should I use?"
|Electron Configuration||1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d3 6s2|
|CAS Registry Number||7440-25-7|
|Wire Atomic Volume||10.9|
|Lattice Type||Body Centered Cube|
|Lattice Constant at 20oC, Angstroms||3.3026|
|Density at 20oC (gm/cc)||16.6|
|Density at 20oC (lb./cu. in.)||0.600|
|Melting Point oC||2996|
|Boiling Point oC||5430|
|Linear Coefficient of Expansion per oC||6.5 x 10-6|
|Thermal Conductivity at 20oC (cal/cm/C/sec)||0.130|
|Specific Heat @ 20oC (cal/gram/C)||0.036|
|Electronegativity (eV) Pauling||1.5|
|Electronegativity (eV) Alfred Rochow||1.33|
|Electronegativity Conductivity, % IACS||13|
|Electrical Resistivity @ 20oC (microhm-cm)||13.5|
|Temperature Coefficient of Electrical Resistivity Per oC (0-100oC)||0.0038|
|Tensile Strength @ Room Temperature, psi||35,000 - 70,000|
|Tensile Strength @ 500oC, psi||25,000 - 45,000|
|Tensile Strength @ 1000oC, psi||13,000 - 17,000|
|Total Emissivity @ 1500oC||0.21|
|Total Emissivity @ 2000oC||0.26|
|Working Temperature, oC||Room Temp|
|Recrystallization Temperature, oC||1050 - 1500|
We’re Looking forward to hearing from you
Midwest Tungsten Service can cut or custom make any rod to your specifications. We also offer custom alloys. Please contact email@example.com to inquire about custom or out-of-stock sizes.
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