Hafnium Foil/Strip/Ribbon

Hafnium Foil/Strip/Ribbon

Hafnium Foil/Strip/Ribbon

Material: Hf+Zr≥99.95%, Zr≤2.5%

Standard: ASTMB776

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Hafnium Foil/Strip/Ribbon is made from high-purity hafnium metal, with excellent corrosion resistance, high-temperature tolerance, and excellent neutron absorption. It is widely applied in aerospace, nuclear energy, electronics, and high-temperature equipment. As a leading supplier and manufacturer of premium hafnium products, Heeger Materials leverages advanced technology to deliver high-purity hafnium and hafium alloys foils, strips, or ribbons for wide ranges of applications.

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Hafnium Foil/Strip/Ribbon Data Sheet

Reference:HMHF1505
Material:Hf+Zr≥99.95%, Zr≤2.5%
Standard:ASTMB776
Purity:99%-99.95%
Dimension:Thickness: 0.01-0.5 mm
Width: ≤300 mm
Length: TBD (To Be Determined)
Temper:Annealed and Unannealed

Hafnium Foil/Strip/Ribbon

Hafnium (Hf) is a lustrous, silver-gray transition metal with a very high melting point (2230°C) and high density (13.31 g/cm3). Hafnium Foil/Strip/Ribbon is made of high-purity hafnium metal or its alloy, exhibiting excellent resistance to high temperatures, corrosion, and radiation. It is an important material in the nuclear industry. HM can supply high-quality hafnium and hafnium alloy foils, strips, and ribbons with various specifications for multiple applications. Please refer to our hafnium plate and hafnium sheet, if you need the thickness to be more than 0.5 mm.

Hafnium Foil

Hafnium Foil/Strip/Ribbon Material Chemical Composition

Chemical Composition (%)
Hf+ZrZrSiMoAlNiCHON
≥99.95≤1≤0.001≤0.001≤0.0005≤0.005≤0.003≤0.001≤0.015≤0.003
CuSnFeTiMnCrSbPbMgNb
≤0.0005≤0.0005≤0.01≤0.001≤0.0005≤0.001≤0.0005≤0.0005≤0.0005≤0.0005

Hafnium Foil/Strip/Ribbon Production Process

Hafnium foil, strip, and ribbon are made of high-purity zirconium ingots through hot rolling, cold rolling, and annealing to achieve the desired thickness, strength, and ductility. Additional treatments such as polishing and chemical etching may be applied to meet specific application requirements. Here is the typical production process:

  • Raw Material Selection: Hafnium Ingot or powder is selected based on purity and quality requirements.
  • Melting and Casting: Hafnium is melted in a vacuum or inert gas atmosphere and cast into ingots.
  • Hot Rolling: The ingot is heated and passed through rollers to reduce the thickness and achieve the desired shape.
  • Cold Rolling: Further thickness reduction is achieved at room temperature, improving the material’s surface finish and mechanical properties.
  • Annealing: The material is heat-treated to relieve internal stresses and improve ductility.
  • Pickling and Polishing: The surface is cleaned using chemical treatments to remove oxides and improve appearance.
  • Final Cutting: The material is cut into foil, strip, or ribbon forms, depending on the specific application requirements.

Hafnium Foil/Strip/Ribbon Surface Finish

Depending on the intended applications, hafnium foil, strip, and ribbon have three main surface finishes as follows:

  • Black: The surface is “as swaged” or “as drawn”, retaining a coating of processing lubricants and oxides.
  • Cleaned: The surface is chemically cleaned to remove all lubricants and oxides.
  • Ground: The surface is centerless to remove all coating and achieve precise dimensions control.

Hafnium Foil/Strip/Ribbon Applications

Due to their extremely high melting point, excellent corrosion resistance, and good neutron absorption, hafnium foils, strips, and ribbons are widely used for the following applications :

  • Nuclear Industry: They are commonly used in control rods and other components of nuclear reactors.
  • Aerospace: In aerospace, they are used as high-temperature materials and as key components in thermal protection systems.
  • Electronics: They can be used to manufacture high-performance semiconductor devices.
  • Chemical Industry: They can be used to manufacture chemical equipment resistant to acid and alkali environments.

Hafnium Foil/Strip/Ribbon Packaging

The Hafnium Foil/Strip/Ribbon is carefully placed in wooden cases or cartons with additional support from soft materials to prevent any shifting during transportation. This packaging method guarantees the integrity of the products throughout the delivery process.

Metal Packing

Hafnium Properties

ItemValue
Atomic number72
Crystal structureHexagonal close packed
Electronic structureXe 4f¹⁴ 5d² 6s²
Valences shown4
Atomic weight( amu )178.49
Thermal neutron absorption cross-section( Barns )103
Photo-electric work function( eV )3.9
Natural isotope distribution( Mass No./% )179/ 13.8
Natural isotope distribution( Mass No./% )176/ 5.2
Natural isotope distribution( Mass No./% )180/ 35.2
Natural isotope distribution( Mass No./% )174/ 0.2
Natural isotope distribution( Mass No./% )177/ 18.5
Natural isotope distribution( Mass No./% )178/ 27.1
Atomic radius – Goldschmidt( nm )0.159
Ionisation potential( No./eV )3/ 23.3
Ionisation potential( No./eV )1/ 7.0
Ionisation potential( No./eV )2/ 14.9
Ionisation potential( No./eV )4/ 33.3
ItemValue
Material conditionHard
Material conditionSoft
Poisson’s ratio0.26
Poisson’s ratio0.26
Bulk modulus( GPa )109
Bulk modulus( GPa )109
Tensile modulus( GPa )141
Tensile modulus( GPa )141
Hardness – Vickers( kgf mm⁻² )150-180
Tensile strength( MPa )445
Tensile strength( MPa )745
Yield strength( MPa )365
Yield strength( MPa )240
ItemValue
Electrical resistivity( µOhmcm )32.2@20@20°C
Superconductivity critical temperature( K )0.128
Temperature coefficient( K⁻¹ )0.0044@0-100°C
ItemValue
Boiling point( °C )4602
Density( gcm⁻³ )13.1@20°C
ItemValue
Melting point( C )2227
Latent heat of evaporation( J g⁻¹ )3700
Latent heat of fusion( J g⁻¹ )122
Specific heat( J K⁻¹ kg⁻¹ )146@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )23@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )6@0-100°C

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To customize your hafnium foil, hafnium strip, or hafnium ribbon, please provide the following details:

  1. Thickness × Width × Length (for the foil, strip, and ribbon)
  2. Tolerances (allowable variations in thickness, width, and length)
  3. Purity (Specify the purity of material required.)
  4. Surface Finish (polished, rough, oxide-coated, etc.)
  5. Quantity of the products you need
  6. Alternatively, you can provide a drawing with your specifications.

Once we have these details, we can provide you with a quote within 24 hours.

We carry a wide variety of hafnium and hafnium alloy products in stock, and for these, there is generally no minimum order requirement. However, for custom orders, we typically set a minimum order value of $200. The lead time for stock items is usually 1-2 weeks, while custom orders usually take 3-4 weeks, depending on the specifics of the order.

DFARS (Defense Federal Acquisition Regulation Supplement) compliance is primarily concerned with the sourcing of materials for defense-related applications in the United States. According to DFARS, certain materials used in defense must be sourced from the United States or qualifying countries.

If you have specific molybdenum materials that are subject to DFARS, please let us know in advance and we will confirm.

At Heeger Materials Inc., we take this responsibility seriously. We adhere to all applicable laws and regulations, including Section 1502 of the Dodd-Frank Act. Our company operates with a strict code of ethics and is committed to only partnering with suppliers who share our dedication to responsible sourcing. We support the initiatives and programs aimed at promoting “conflict-free” supply chains and work diligently to ensure that our products meet these standards.

Heeger Materials Inc., established in 2016 in Colorado, USA, is a specialized supplier and manufacturer of tantalum and tantalum alloys. With extensive expertise in supply and export, we offer competitive pricing and customized solutions tailored to specific requirements, ensuring outstanding quality and customer satisfaction. As a professional provider of refractory metals, specialty alloys, spherical powders, and various advanced materials, we serve the research, development, and large-scale industrial production needs of the scientific and industrial sectors.

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Other Foil/Strip/Ribbon Products

Heeger Metal provides a wide range of metal foil, metal strip, and metal ribbon products. Our foil and strip materials are precision-engineered for applications requiring high strength, flexibility, and thermal stability, ideal for electronics, aerospace, and industrial sectors. Whether you need custom metal ribbons or thin metal strips, our products deliver superior performance and reliability.

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