Product Details
A Hafnium rod is a cylindrical bar processed from high-purity metallic Hafnium (Hf).
Main Specifications & Technical Parameters
|
Item |
Typical Value / Range |
|
Chemical Purity |
≥ 99.9% (Some grades ≥ 99.95%) |
|
Main Impurities |
Total Zr, O, Fe, etc. ≤ 0.1% (≤ 0.001%) |
|
Density |
13.31 g·cm⁻³ |
|
Melting Point |
2220 °C |
|
Boiling Point |
5200 °C |
|
Thermal Conductivity |
22 W·m⁻¹·K⁻¹ |
|
Coefficient of Linear Thermal Expansion |
4.5 × 10⁻⁶ K⁻¹ (Low thermal expansion) |
|
Tensile Strength |
485 MPa (≥ 380 MPa per standard requirement) |
|
Yield Strength |
125 MPa |
|
Elongation |
> 30% (Up to 40% for single-crystal rods) |
|
Dimensional Tolerance |
Diameter ±0.5 mm, Wire Diameter ±0.05 mm (GB/T 38524-2020) |
Application Fields
Nuclear Energy Industry: Serves as a key material for nuclear reactor control rods, utilizing its high thermal neutron capture cross-section (≈ 104 barn) for neutron absorption. Also used in nuclear radiation detectors, shielding materials, and structural components for nuclear fuel assemblies.
Aerospace: Its high melting point, low thermal expansion, and excellent mechanical strength make it an additive for superalloys (e.g., Ni-based superalloys), enhancing material strength and creep resistance above 1200°C. Used in components for high-temperature, corrosive environments like plasma cutting tips, nozzles, and welding electrodes.
Electronics & Optoelectronics: Hafnium rods can be machined into X-ray tube cathodes and vacuum electron device electrodes due to their low evaporation rate and good electrical conductivity. Used as evaporation targets in thin-film deposition (CVD) for manufacturing high-end optical coatings and semiconductor devices.
Chemical Processing & Energy: Offers excellent resistance to acid and alkali corrosion, suitable for corrosion-resistant parts in chemical, petroleum, geological, and energy equipment. Used as a structural material in high-temperature heat exchangers and refractory metals (ARM).
Others: High-purity hafnium rods are also used in scientific research, standard material preparation, and specialized applications like medical radiation sources (e.g., radioisotope carriers).
Product Advantages
|
Advantage |
Description |
|
High Purity, Low Impurities |
Double electron beam melting or vacuum arc melting processes ensure harmful impurities like Zr, O are ≤ 0.001%. |
|
Exceptional High-Temperature Performance |
Melting point of 2220°C, maintains strength and dimensional stability in extreme high-temperature environments. |
|
Excellent Mechanical Properties |
Tensile strength 485 MPa, yield strength 125 MPa, elongation > 30%. |
|
Low Thermal Expansion Coefficient |
4.5 × 10⁻⁶ K⁻¹, suitable for precision instruments and high-temperature structural components. |
|
Strong Neutron Absorption Capability |
Large thermal neutron capture cross-section, ideal for nuclear control rods. |
|
Corrosion & Chemical Resistance |
Excellent resistance to most strong acids, alkalis, hydrochloric acid, sulfuric acid, and other corrosive media. |
|
Processing Flexibility |
Can be processed into rods, wires, sheets, targets, etc., via drawing, turning, polishing, etc. |
Chemical Properties (Overview)
Element Symbol / Atomic Number: Hf / 72
Relative Atomic Mass: 178.49 g·mol⁻¹
Electronic Configuration: [Xe] 4f¹⁴ 5d² 6s²
Chemical Activity: Relatively inert at room temperature, resistant to most acids and alkalis; forms oxides/fluorides at high temperatures with oxygen/fluorine.
Main Alloy Systems: Hf-Nb, Hf-Mo, Hf-Ti, Hf-Ni, etc., used in superalloys and nuclear materials.
Mechanical Properties (Key Indicators)
|
Indicator |
Value (Typical) |
|
Room Temperature Tensile Strength |
≥ 380 MPa (Standard requirement); Actual up to 485 MPa |
|
Yield Strength |
125 MPa (Single-crystal rod) |
|
Elongation |
> 30% |
|
Hardness |
HV ≈ 300–350 (Depends on heat treatment condition) |
|
Modulus of Elasticity |
~78 GPa |
|
Fracture Toughness |
K_IC ≈ 30 MPa·m⁰·⁵ (Single crystal) |
Selection Guidance
Nuclear Energy / High-Radiation Environments → Select Hafnium rods with ≥ 99.95% ultra-high purity and single-crystal structure to meet high neutron capture and low impurity requirements.
Aerospace Superalloys → Use crystalline hafnium rods (available in 0.5 mm–10 mm diameters), balancing mechanical strength and thermal expansion matching.
Chemical Corrosion-Resistant Parts → Choose standard high-purity hafnium rods (≥ 99.9%), offering excellent acid/alkali resistance at a relatively lower cost.
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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