Product Details
The Hafnium tube, with its extremely high melting point, exceptional corrosion resistance, outstanding thermal neutron absorption capability, and good mechanical strength, has become a critical material in high-end sectors such as nuclear energy, aerospace, semiconductors, and high-temperature vacuum technology.
Key Advantages
|
Advantage |
Description |
|
Extremely High Melting & Boiling Point |
Melting point 2227°C, boiling point 4603°C, enabling long-term service in extreme high-temperature environments. |
|
Excellent Corrosion Resistance |
Forms a dense oxide film at room temperature, preventing further oxidation; essentially inert to water, dilute acids, and strong alkalis; soluble only in hydrofluoric acid. |
|
High Thermal Neutron Absorption |
Thermal neutron absorption cross-section ~105 barns, making it an ideal material for nuclear reactor neutron absorbers. |
|
Good Mechanical Strength |
Tensile strength > 392 MPa, yield strength > 196 MPa, elongation 22% at room temperature; maintains > 275 MPa tensile strength and 35% elongation at 320°C. |
|
Hardness & Workability |
Mohs hardness ~5.5, easily cold-drawn, heat-treated, and precision polished, suitable for thin-walled tubes or precision capillary tubes. |
|
Low Magnetism |
Hafnium is non-magnetic, suitable for electronic and optoelectronic devices sensitive to magnetic fields. |
Chemical Properties
Elemental Characteristics: Hafnium (Hf), element 72, is a silver-gray transition metal with an atomic weight of 178.49 and a density of 13.31 g·cm⁻³.
Chemical Inertness: Insoluble in water, dilute acids, and strong alkalis at room temperature; forms soluble fluorides only in hydrofluoric acid; reacts with oxygen and nitrogen at high temperatures to form corresponding oxides and nitrides.
Oxidation Behavior: A dense HfO₂ oxide layer forms naturally on the surface, preventing further corrosion and providing excellent corrosion resistance and high-temperature oxidation stability.
Common Compounds: Hafnium dioxide (HfO₂) has a high dielectric constant and is widely used in semiconductor gate dielectrics; Hafnium tetrachloride (HfCl₄) is an important chemical raw material.
Mechanical Properties
|
Property |
Value (Typical) |
Remarks |
|
Tensile Strength σb |
> 392 MPa (Room Temp.) |
Referencing hafnium tube/rod production data |
|
Yield Strength σ₀.₂ |
> 196 MPa (Room Temp.) |
As above |
|
Elongation δ |
22% (Room Temp.) |
As above |
|
Hardness |
Mohs 5.5 |
Referencing product introduction |
|
Modulus of Elasticity |
~78 GPa (Common literature value) |
Not directly specified in source data; within typical metal range; confirm during actual selection |
Application Fields
Nuclear Industry: Control rod neutron absorbers, core structural components, shielding assemblies (utilizing high thermal neutron capture and corrosion resistance).
Aerospace: Rocket nozzles, superalloys for engines (Hf-Nb, Hf-Ta alloys), high-temperature bolts, welding materials.
Semiconductors & Microelectronics: High-k gate dielectrics like HfO₂, HfSiO, HfSiOAl, used in DRAM and CMOS gates to enhance performance.
Vacuum Coating & Targets: Vacuum coating, electron beam evaporation, X-ray tube cathodes, discharge tube electrodes, and other high-temperature electrode materials.
High-Temperature Structural Materials: Hafnium carbide (HfC) ceramics for extreme high-temperature anti-ablation components; also enhances heat resistance in composite materials.
Others: Medical imaging (X-ray tubes), optoelectronic devices, functional thin films, decorative electroplating.
Selection & Usage Guidance
Purity Requirements: For high-reliability applications like nuclear or aerospace, select Hafnium tubes with ≥ 99.95% ultra-high purity to minimize risks from impurities related to radiation or corrosion.
Wall Thickness & Size: Select appropriate wall thickness based on working pressure and temperature; thin-walled tubes (≤ 0.5 mm) suit vacuum targets, while thick-walled tubes (≥ 10 mm) suit nuclear core structures.
Surface Treatment: Polished or bright surfaces reduce defects and improve corrosion resistance; for welding, use annealed (soft condition) tubes to enhance weldability.
Heat Treatment: Vacuum annealing before high-temperature use can relieve internal stress and improve ductility.
FAQ:
Do you provide samples?
A: Yes, we offer complimentary samples with shipping arranged by the customer. We recommend testing samples or placing trial orders before larger purchases.
Q: How competitive are your prices?
A: Our pricing reflects exceptional value when considering the premium quality and comprehensive service we provide.
Q: What is your quotation turnaround time?
A: Typically 24 hours after inquiry receipt. Urgent requests receive priority handling upon notification.
Q: How do I request custom products?
A: Please share your drawings, images, or samples. We will confirm specifications and promptly initiate production.
Contact:
About STRX Titanium – Why Choose Us?
Premium Materials：We select premium raw materials to ensure quality control from the source.
Rigorous Quality Inspection：Strict quality inspection standards are implemented to ensure 100% compliance with customer requirements.
Customized Solutions：We understand that each industry has unique needs. Our team works closely with clients to tailor products based on specific requirements. We customize all titanium products (color/size, etc.) according to customer drawings or ideas.
Fast Delivery：Advanced production management ensures efficient and prompt delivery from production to shipment.
Expert Support：Gain insights from our dedicated expert team, who provide professional advice and practical assistance. STRX Titanium helps you identify and select the best solutions tailored to your business needs, ensuring optimal results and satisfaction.
STRX Titanium has earned consistent praise from clients for high-quality products and competitive pricing. With strict quality control and professional technical support, we look forward to cooperating with you!
In Summary,STRX Titanium is a leading manufacturer and supplier of titanium products in China. We maintain strong technical partnerships with major domestic and international equipment manufacturers and uphold rigorous quality standards to meet client demands.
If you are looking for a reliable titanium product supplier, please contact us immediately to learn more about our products and services.
Email: info@strx-titanium.com
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