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Product Description
Technical details, material information and manufacturing notes for this product.
Tantalum Rods and Bars Overview
Tantalum rods and bars are high-performance refractory metal materials.
They are known for excellent corrosion resistance, high melting point, and superior ductility.
They are widely used in chemical processing, medical, aerospace, and vacuum furnace industries.
Tantalum is one of the most chemically stable metals.
It performs reliably in extremely corrosive and high-temperature environments.
Compared with tungsten and molybdenum, tantalum is much easier to machine and form.
1. Size Classifications (ASTM B365)
Tantalum round stock is classified by diameter under ASTM B365 standard.
Tantalum Wire
Diameter under 3.18 mm.
Usually supplied in spool form for precision applications.
Tantalum Rod
Diameter from 3.18 mm to 63.5 mm.
Supplied in straight cut lengths for machining and industrial use.
Tantalum Bar
Diameter above 63.5 mm.
Used as heavy forging or machining raw material.
2. Key Material Properties
Acid Corrosion Resistance
Tantalum forms a stable oxide layer (Ta2O5).
It is highly resistant to strong acids such as nitric acid and hydrochloric acid.
It performs similarly to glass in chemical stability.
Excellent Ductility
Tantalum can be easily bent, machined, and formed.
It does not crack easily under cold working conditions.
High-Temperature Stability
Tantalum maintains strength at extreme temperatures.
It has low vapor pressure and does not contaminate vacuum systems.
3. Common Material Grades
| UNS Grade | Material Type | Engineering Benefit |
| R05200 | Pure Tantalum | High purity, excellent ductility, chemical resistance |
| R05400 | Sintered Tantalum | Uniform grain structure for electronics applications |
| R05252 | Ta-2.5W Alloy | Higher strength for chemical and pressure systems |
| R05255 | Ta-10W Alloy | Extreme high-temperature structural performance |
4. Industrial Applications
Chemical Industry Components
Tantalum rods are used in valves, shafts, bolts, and reactor parts.
They resist strong acid corrosion in chemical plants.
Medical Implants
Tantalum is biocompatible and non-toxic.
It is used in bone screws, joint implants, and surgical devices.
Vacuum Furnace Systems
Used for supports, hooks, and heating structure components.
It performs well in ultra-high temperature environments.
Semiconductor Applications
Used in sputtering targets and precision electronic components.
Ensures stability in advanced manufacturing processes.
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Related Technical Resources
Material guides, application notes and manufacturing knowledge from ROBUST.
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