Hafnium Rod
Overview
Hafnium rod is a high-performance refractory metal product with excellent corrosion resistance and high-temperature stability. FANMETAL supplies high-purity hafnium rods and hafnium wire with customized diameters, lengths, and surface finishes for nuclear, aerospace, chemical processing, and other demanding applications.
Dimension
| Material | Hafnium (Hf) |
| Purity | Hf+Zr ≥99.99%, Zr content available in 0.2%, 0.3%, 0.5%, 1%, 1.5% grades |
| Diameter | 6- 120 mm |
| Length | Up to 6000 mm |
| Density | 13.3 g/cm3 |
| Tensile Strength | 517MPa |
| Surface Finish | Polished, Alkali Cleaning, Grinding, Chemical Cleaning |
| Shape | Round Rod |
| Standard | ASTM B737,GB |
| Certification | ISO9001 |
| Custom Size | Available |
Characteristics
Excellent high-temperature resistance
The melting point of hafnium is as high as 2233℃. It can maintain stable physical form and mechanical properties in a high-temperature environment and is not easy to melt or deform.
Good chemical stability
Hafnium does not react easily with air, water, and many chemical reagents at room temperature and has strong corrosion resistance.
Excellent nuclear performance
Hafnium has a large absorption cross-section for neutrons and can be used as a control rod material for nuclear reactors. It controls the rate of nuclear reactions by absorbing neutrons, ensuring the safe and stable operation of the reactor.
Good mechanical properties
Hafnium has certain mechanical strength and toughness and can be processed into rods and components of various shapes to meet the structural requirements in different scenarios. It has been widely applied, especially in complex working conditions.
Application
1. Aerospace
- Hafnium rods can be used as lining materials for engine nozzle extensions and combustion chamber throats, capable of withstanding the high temperatures and high pressures exceeding 3000°C generated by propellant combustion, such as in the space shuttle main engine.
- When reentering the atmosphere, the surface temperature of returning spacecraft (such as manned spacecraft and satellite recovery capsules) can reach thousands of degrees Celsius. Hafnium round bar can be processed into reinforcements or heat dissipation elements for thermal protection structures to help resist aerodynamic heating and protect the equipment and personnel within the cabin.
2. Nuclear Industry
- Hafnium control rods are inserted and withdrawn from the reactor core to regulate neutron flux, precisely controlling the rate of nuclear fission reactions and ensuring stable reactor operation or emergency shutdown.
- Hafnium rods can also serve as support or guide components for nuclear fuel assemblies, maintaining structural stability in the high-temperature and high-pressure reactor coolant environment and preventing fuel rod failure due to deformation or corrosion.
3. High-End Materials
- Hafnium can be added as an alloying element to nickel- and cobalt-based superalloys, improving the alloy's high-temperature strength and creep resistance by refining grains and strengthening grain boundaries. These alloys are widely used in components such as aircraft engine turbine blades and combustion chambers.
- Hafnium exhibits stable electron emission properties at high temperatures and is resistant to reacting with residual gases in a vacuum environment. It can be used to manufacture electrodes for vacuum arc furnaces and cathode support rods for electron tubes, ensuring long-term reliable operation under high vacuum and high-temperature conditions.
- In scientific research equipment such as nuclear physics experiments and high-temperature material testing, Hafnium round rods can be used as neutron shielding materials (blocking excess neutron radiation) or as structural components in high-temperature reaction vessels, meeting the stringent radiation and high-temperature resistance requirements of these experiments.
Process
① Typically, hafnium sponge or hafnium alloy ingots are used as the initial raw material, which is purified through electron beam melting to remove impurities.
② Forging pressure processing causes plastic deformation of the blank, refines the grain size, improves the microstructure, and initially forms it into a rough bar.
③ Multiple rolling passes improve the bar's dimensional accuracy and surface quality. Annealing is required after cold rolling to eliminate internal stresses.
④ If hafnium alloy bars (such as hafnium-niobium and hafnium-titanium alloys) are being processed, solution treatment and aging treatment are required to improve the alloy's strength and stability.
⑤ Cutting and grinding processes improve surface finish and dimensional accuracy to meet the requirements of high-end applications such as the nuclear industry and aerospace.
⑥ Comprehensive quality inspections are performed, such as mechanical property testing, chemical composition analysis, and dimensional inspection.
Why choose us
On-time delivery and timely after-sales service
Unless there are special circumstances, we will strictly abide by the delivery deadline and deliver the products to customers safely by international express within the deadline. If any after-sales problems arise, we will provide effective solutions. If necessary, we will give discounts or compensation for the next order.
01
Competitive prices
Our prices are very reasonable compared to other overseas suppliers and are worthy of our product quality. Moreover, all our products have obtained ISO9001 certification. FANMETAL can provide overseas customers with the most cost-effective non-ferrous metal products.
02
Advanced production equipment
We have professional CNC machine tools, rolling machines, sintering furnaces, cutting machines, welding equipment, and surface treatment equipment. Moreover, our technicians can design drawings and customize production according to customer requirements. They can also go to overseas customers to carry out on-site installation of equipment.
03
Global Shipping
We have established long-term cooperation with many international logistics companies, such as DHL, UPS, FedEx, and SF Express, and can deliver products to customers on time by land or air transportation. We can effectively ensure the safety and on-time arrival of goods, and significantly reduce operating costs and improve customer satisfaction.
04
Case
Hafnium Rod, Hafnium Round Bar, Hafnium Metal Rod To Vietnam
FANMETAL recently completed the shipment of a batch of high-specification Hafnium Round Bars for a key Vietnamese customer. This collaboration not only demonstrates the company's expertise in hafnium rod production, but also further consolidates its position in the Southeast Asian nonferrous metals market and lays a solid foundation for future in-depth cooperation between the two parties. Before shipment, each bar undergoes multiple rigorous inspection procedures, including chemical composition analysis, mechanical property testing, and dimensional accuracy measurement, to comprehensively guarantee product quality.
Product qualification
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