Pure Tungsten Rod
CHEMETAL USA’s pure tungsten rods, like all its powder metallurgy products, are pressed and sintered to the highest standards and customer specifications. Our tungsten rods have a minimum 99.95% tungsten purity, 19.3 g/cm3 density, and diameters ranging from 0.029″ to 5.0” or more.
CHEMETAL USA always keeps the customer front of mind. It is not merely a quality product that we strive for, but a quality relationship based on trust and reliability. That’s why our engineers and other specialists work closely with customers at every step to assure our performance meets or exceeds their expectations.
Our advanced fabricating capacities, developed over many years in the business, ensure all our pure tungsten rods consistently meet performance and dimensional specifications. In addition to pure tungsten, we use a variety of tungsten alloys, including tungsten nickel iron, tungsten nickel copper, copper tungsten, and lanthanated tungsten, to make rods with different performance characteristics for specific applications.
Tungsten Rod | |
| Diameter | 0.02″ (0.508mm) – 25″ (635 mm) |
| Length | Maximum 48″ (1020mm) |
| Density | 19.3g/cm3 |
| Surface | Ground, Polished, Machined |
| Purity | W≥99.95% |
Our advanced fabricating capacities ensure all of our pure tungsten rods consistently deliver the expected performance and dimensions. We also provide various types of Tungsten alloy rods including Tungsten Nickel Iron rod, Tungsten Nickel Copper rod, Copper Tungsten rod, and Lanthanated Tungsten rod.
Standard Tungsten Rod Diameters
| Form | Dia. Inch | Dia. Inch | Dia. Inch | Dia. Inch | Dia. Inch |
| Rod | 0.03 | 0.275 | 0.625 | 1.15 | 1.33 |
| Rod | 0.04 | 0.30 | 0.65 | 1.175 | 2.00 |
| Rod | 0.05 | 0.325 | 0.675 | 1.20 | 2.30 |
| Rod | 0.06 | 0.35 | 0.70 | 1.225 | 2.75 |
| Rod | 0.07 | 0.375 | 0.725 | 1.25 | 2.80 |
| Rod | 0.08 | 0.40 | 0.75 | 1.275 | 2.875 |
| Rod | 0.09 | 0.425 | 0.775 | 1.30 | 3.00 |
| Rod | 0.10 | 0.45 | 0.80 | 1.325 | 3.15 |
| Rod | 0.125 | 0.475 | 0.825 | 1.35 | 3.25 |
| Rod | 0.15 | 0.50 | 0.85 | 1.375 | 3.75 |
| Rod | 0.175 | 0.525 | 0.875 | 1.40 | 3.80 |
| Rod | 0.20 | 0.55 | 0.90 | 1.60 | 4.00 |
| Rod | 0.225 | 0.575 | 0.925 | 1.75 | 4.20 |
| Rod | 0.25 | 0.60 | 1.00 | 1.80 | 4.50 |
| Rod | 0.24 | 0.55 | 1.25 | 1.90 | 5 |
The tungsten rod products offered by CHEMETAL USA are subject to close inspection and strict quality control. The microstructure and recrystallization behavior, as well as the mechanical, chemical, and physical properties are all closely monitored. We have also worked hard to optimize the sintering and machining processes in order to cost-effectively achieve a high production yield and homogenous microstructure.
Uses of Pure Tungsten Rods
- Furnace pillars for sapphire crystal furnaces and other vacuum furnaces
- Furnace heater for sapphire crystal furnaces and other vacuum furnaces
- Tungsten headpieces for the industries of quartz
- Stirring bars for glass smelting and rear-earth smelting
- Tungsten heavy hammers
- Connecting rods
- Screws/bolts and other fasteners
- Furnace support pillars
- Electrodes for welding electrodes and rare earth metal industry
Pure Tungsten Rod Properties
- High Density: 19.25 g/cm³
- High Melting Point: 3422°C (6192 °F)
- High Tensile Strength
- Low Coefficient of Thermal Expansion
- Low Electrical Resistivity
- Good Machinability
- High Absorption Capacity
- High Elastic Modulus
Tungsten Alloy Rods
Tungsten Heavy Alloy Rod (WNiFe/WNiCu Rod)
Tungsten heavy (aka “high density”) alloy rod is comprised of 85%-99% pure tungsten by weight, alloyed with small amounts of nickel (Ni), copper (Cu), and iron (Fe) using the liquid-phase sintering method. This product is prized not only for its very high density (16.5g/cc to 19.0g/cc), but also for its excellent strength, low thermal expansion, and better machinability compared to pure tungsten rods. These special properties make CHEMETAL USA’s tungsten heavy alloy rods ideally suited for use in many specialized applications. More about tungsten nickel iron and tungsten nickel copper rod >>>
Tungsten Copper Rod (W Cu Rod)
CHEMETAL USA’s tungsten copper alloy rod exhibits excellent conductivity and resistance in high-temperature and electrical erosion environments. Its tungsten skeleton structure imparts strength at high temperatures, while the infiltrated copper has a superior cooling effect when working temperatures reach as high as 2000°C even for extremely short periods.
Tungsten copper rod is produced at our customer’s requestion in a fractional range from W Cu 50/50 to W Cu 90/10 using the infiltration sintering method. Tungsten and copper are mutually insoluble and have distinct differences in melting point, density, and many other physical properties. The various ratios of the component metals created specific physical and mechanical properties necessary in many of today’s most demanding industrial environments and applications. More about tungsten copper rod >>>
Lanthanated Tungsten Rod (W La Rod)
Lanthanated tungsten rod is made by doping oxide lanthanum into pure tungsten using the dispersion strengthening method. The lanthanum oxides enhanced the alloy’s heat resistance, conductivity, and crystallization temperature compared with pure tungsten rods. Lanthanated tungsten rod is the preferred material for electrodes in both DC and AC welding applications. Among its many qualities are excellent arc stability at low amperages; maintaining its sharp point well; minimal burn rate in high amperage situations; good current carrying capacity; low spark erosion; and zero radioactive hazards. More about lanthanated tungsten rod >>>
Precision Machined Tungsten Rods
As an ISO certified refractory metal manufacturer with advanced machining facilities, CHEMETAL USA is capable of offering various types of tungsten rods that all meet a consistently high standard of diameter tolerance, roundness, and straightness. and machinability. With years of experience in dealing with tungsten materials, our expert technicians provide a full complement of precision machining services for rods made from unalloyed Tungsten, Tungsten Nickle Copper alloy, Tungsten Nickle Iron alloy, Copper Tungsten, Lanthanated Tungsten.
- Turning
- Milling
- Drilling
- Cutting
- Joining
- Forming
- Grinding
- Stamping
- EDM Machining