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HSG METAL is a professional tungsten rod manufacturer and tungsten rod factory in China.
Types of tungsten rod for sale: Black tungsten rod & Black tungsten rod
Diameter Range: 0.8mm ~ 50mm
HSG Metal is an experienced tungsten rod manufacturer in China. We offer premium tungsten rods that meet the highest industry standards, providing exceptional quality and performance for a wide range of applications, including support lines, lead lines, printer needles, all kinds of electrodes quartz furnaces, filament, and more.
If you are looking for a reliable tungsten rod factory, contact us today for the latest tungsten rod price!
Diameter（mm） | Black tungsten rod | Polished tungsten rod | Custom length tolerance(mm) | ||
Diameter tolerance (%) | circular degree | Diameter tolerance (%) | circular degree | ||
0.8≤d≤3.0 | ±2 | 2 | ±0.03 | 0.03 | L≤50±0.5 |
3.0<d≤6.5 | ±2 | 2 | ±0.05 | 0.05 | 50<L≤100±1.0 |
6.5<d≤13.5 | ±2 | 2 | ±0.08 | 0.08 | 100<L≤300±1.5 300<L≤500±2.0 |
13.5<d≤25.0 | ±2 | 2 | ±0.15 | ±0.15 | 500<L≤1000±2.5 |
25.0<d≤50 | ±2 | 2 | ±0.25 | ±0.25 | 1000<L≤2000±5 |
Pure tungsten rods are composed of 99.95% tungsten powder, making them an excellent choice for various industrial applications. Their exceptional physical and mechanical properties ensure reliability and performance.
Density: 19.3 g/cm³
Melting Point: 3422°C (liquid)
Conductivity: 30% IACS minimum
Hardness: 69 HRA minimum
Low Thermal Expansion: Ensures dimensional stability under heat.
Good Thermal Conductivity: Facilitates efficient heat dissipation.
Electrical Resistance: Provides adequate resistance to electrical flow.
High Elastic Modulus: Maintains shape and form under stress.
Pure tungsten rods are typically produced using powder metallurgy, which involves forging and annealing processes. Testing confirms the quality and properties of the finished products.
Tungsten rods possess special properties, such as low thermal expansion with good thermal conductivity, adequate resistance to electrical resistance, and high elastic modulus. Therefore, tungsten rods are widely used in various fields, such as electrical components, printing & imaging, high-temperature applications, tools & manufacturing, automotive industry, aerospace & defense:
Support and Lead Lines: Provide stable connections in circuits.
Electrodes: Essential for welding and machining.
Printer Needles: Offer precision and durability for high-quality printing.
Quartz Furnaces: Used in semiconductor manufacturing.
Filaments: Ideal for incandescent bulbs due to high-temperature resistance.
High-Speed Tools: Enhance productivity in cutting and machining.
Sputter Target Materials: Important for thin film deposition in electronics.
Components: Utilized in sensors and other electronic parts for reliability.
Structural Components: Ensure strength and durability in demanding environments.
As a professional tungsten rod manufacturer in China, HSG Metal specializes in the production of high-quality tungsten rods. We have been providing top-tier tungsten rods to our customers from all over the world. If you are looking for a tungsten rod factory, contact us now!
Produced through advanced powder metallurgy techniques, our tungsten rods and other products made from tungsten undergo rigorous testing to ensure they meet specified tolerances and quality standards.
Whether you require tungsten rods for industrial, technological, or scientific applications, HSG Metal, a leading tungsten rod factory, provides reliable solutions tailored to your specific needs. Explore our range of tungsten rods for sale and experience the quality and performance that set us apart.
Different average forging ratios and forging methods were used to draw the sintered pure tungsten bar, and the annealed tungsten bar was annealed under different annealing systems. The microstructure and physical and mechanical properties of the samples were analyzed by metallographic microscope, hardness tester and density tester. The results showed that:
1. After forging, the density and hardness of tungsten bar are improved significantly, but too large average forging ratio will easily lead to forging cracking and other phenomena of tungsten bar. When forging at 1450℃, the average forging ratio should be less than 32%.
2. Compared with the tungsten bar forged with smaller average forging ratio and one end of one fire, the tungsten bar forged with larger average forging ratio and two ends of one fire has finer structure and higher hardness.
When the total forging ratio is about 80%, the recrystallization of the tungsten rod forged at one end of one fire is basically completed after annealing at 1300℃ for 30 min, while the recrystallization of the tungsten rod forged at both ends of one fire is completed after annealing at 1350℃ for 60 min when the average forging ratio is larger. After annealing, the hardness of tungsten bars with the two forging processes will decrease, and the hardness of tungsten bars with the former process is less than that with the latter process before annealing and at the early stage of annealing, and this difference is no longer obvious with the completion of recovery recrystallization.
The surface of sintered tungsten rod is silver-gray metallic luster;
The surface of the forging tungsten rod has a layer of oxide, the surface is black;
Polished tungsten rod, silver gray metallic luster.
