Tantalum Rod (Tantalum Bar) is well-known mainly for its unmatched corrosion resistance and chemical inertness. Tantalum Rod (Tantalum Bar) is also extremely stable at high temperatures, since tantalum has a melting point around 3000°C. Tantalum is also one of the most bio-compatible metals available and is also radio-opaque due to its high density (16.68 g/cm3).
Tantalum Grades Guide:
R05200, unalloyed tantalum, electron-beam furnace or vacuum-arc melt, or both;
R05400, unalloyed tantalum, powder-metallurgy consolidation;
R05240, tantalum alloy, 60 % tantalum, 40 % niobium, electron-beam furnace or vacuum-arc melt;
R05252, tantalum alloy, 97.5 % tantalum, 2.5 % tungsten, electron-beam furnace or vacuum-arc melt, or both;
R05255, tantalum alloy, 90 % tantalum, 10 % tungsten, electron-beam furnace of vacuum-arc melt, or both.
Physical Properties:
Density 16.6 g/cc
Melting Point 3290 K, 2996°C, 5462°F
Boiling Point 5731 K, 6100°C, 9856°F
Coefficient of Thermal Expansion (20°C) 6.5 x 10(-6) / °C
Electrical Resistivity (20°C) 13.5 microhms-cm
Electrical Conductivity 13% IACS
Specific Heat 0.036 cal/g/°C
Thermal Conductivity .13 cal/cm(2)/cm°C/sec
Technology:
Tantalum Powder → Isocratic Pressing → Bar Billet →Sintering → Semi-finished bar →Forging → Swaging → Polished → End products → Inspection → Packing
Testing:
Corrosion test
Eddy Current test
Mechanical test
Microstructure test
| Standard | ASTM B365, ASTM F560 |
| Material | RO5200, RO5400, RO5252, RO5255 |
| Shape | Round, Square, Hex (A/F), Rectangle, Wire |
| Dimension range | As per custom size |
| Surface | Black, Pickling, Sand-blasting, Polished |
| State | Annealed (M) or Non-Annealed(Y) |
| Third party inspection | Acceptable |
| Name | Ro5200 Pure Tantalum Price bar |
| Purity | 99.95% min |
| Grade | R05200, R05400,R 05252, R05255, R05240 |
| Standard | ASTM B708 GB/T 3629 |
| Size | Item Thickness(mm) Width(mm) Length(mm) Foil 0.01-0.09 30-150 >200 Sheet 0.1-0.5 30-60 9.630-1000 Plate 0.5-10 50-1000 50-2000 |
| Condition | 1. Hot-rolled/Cold-rolled; 2.Alkaline Cleaning 3.Electrolytic polish; 4. Machining, grinding; 5.Stress relif anealing |
| Chemistry% | |||||||||||||
| Designation | Chief Component | Impurities Maximum | |||||||||||
| Ta | Nb | Fe | Si | Ni | W | Mo | Ti | Nb | O | C | H | N | |
| Ta1 | Remainder | 0.004 | 0.003 | 0.002 | 0.004 | 0.006 | 0.002 | 0.03 | 0.01 | 0.004 | 0.0015 | 0.002 | |
| Ta2 | Remainder | 0.01 | 0.01 | 0.005 | 0.02 | 0.02 | 0.005 | 0.08 | 0.015 | 0.01 | 0.0015 | 0.01 | |
| TaNb3 | Remainder | <3.5 | 0.01 | 0.01 | 0.005 | 0.02 | 0.02 | 0.005 | 0.015 | 0.01 | 0.0015 | 0.01 | |
| TaNb20 | Remainder | 17.0-23.0 | 0.01 | 0.01 | 0.005 | 0.02 | 0.02 | 0.005 | 0.015 | 0.01 | 0.0015 | 0.01 | |
| Ta2.5W | Remainder | 0.005 | 0.003 | 0.002 | 3 | 0.006 | 0.002 | 0.04 | 0.015 | 0.005 | 0.0015 | 0.006 | |
| Ta10W | Remainder | 0.005 | 0.003 | 0.002 | 11 | 0.006 | 0.002 | 0.04 | 0.015 | 0.005 | 0.0015 | 0.006 | |
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