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Choose hafnium metal and powder, rod, wire, sheet and foil, tube, targets, alloys or compounds.
Specify the product form, hafnium purity basis, zirconium limit and documentation required for your application.
Choose the form first. Metal, alloy and compound specifications must be confirmed separately.
Confirm chemistry, material condition, dimensions and required inspection documents.
Confirm chemistry, material condition, dimensions and required inspection documents.
Confirm chemistry, material condition, dimensions and required inspection documents.
Confirm chemistry, material condition, dimensions and required inspection documents.
Confirm chemistry, material condition, dimensions and required inspection documents.
Confirm chemistry, material condition, dimensions and required inspection documents.
Browse every existing product-family page below. Shared destinations cover their published subforms; a new page is not implied for each alloy or powder variant.
| Selection item | Required information | Important boundary |
|---|---|---|
| Hf purity and zirconium | State Hf alone versus Hf+Zr, the separate Zr limit, interstitial limits and analysis method. | A combined Hf+Zr assay is not the same as low-Zr hafnium. |
| Metal / alloy / compound | Specify elemental Hf, exact Hf–Ta composition, or HfC / HfO₂ / HfF₄ and product form. | Compound purity and dense-metal property data are not interchangeable. |
| Nuclear-use requests | Provide application-specific grade, chemistry, dimensions, traceability and acceptance requirements. | Neutron absorption is an elemental property, not evidence of nuclear-grade qualification or a supply commitment. |
| Powder and crystal bar | Use the existing Hafnium Metal page for powder, granules and crystal bars; request the lot-specific analysis. | A single inspection report applies to its identified lot, not all products or future orders. |
ASTM catalog editions checked on 24 October 2026. Specify the contractual edition and grade; listing a scope does not certify supply.
| Standard / edition | Material and form | Scope boundary |
|---|---|---|
| ASTM B737-10(2026) | Hot-/cold-worked hafnium rod and wire; R1 nuclear and R3 commercial-alloying grades. | Confirm the specified dimensional range and condition. Rod mechanical requirements do not automatically apply to wire. |
| ASTM B776-12(2024) | Wrought hafnium / hafnium-alloy strip, sheet and plate; R1 and R3 grades. | Not a blanket rod, wire, tube, powder, target or compound specification. |
The elements occur together and have similar chemistry, but different neutron-absorption behavior. Chemical separation and subsequent analysis are important; isotope separation is not a general description of separating these elements. Explore Zirconium Products.
Hafnium’s neutron absorption explains nuclear-control applications. End-use qualification, origin, lot traceability, zirconium and impurity limits require explicit review. No nuclear certification, medical-implant approval or unrestricted supply is implied.
Provide destination, consignee, end use and required origin/traceability documents. Export classification, licensing and shipment eligibility depend on the item and applicable jurisdiction. For example, U.S. EAR ECCN 1C231 describes specified hafnium materials; it is not a universal shipment authorization.
Choose metal versus oxide, carbide, fluoride or a named alloy. Define process chemistry, temperature, atmosphere, compatibility and purity basis. High-k dielectric or ceramic behavior does not follow from bulk Hf-metal data.
The original elemental reference table is retained. Strength and hardness lack a specified grade/condition and are not purchase acceptance limits. Melting point is not a service-temperature rating; metal density does not describe loose powder or compounds.
| Phase At STP | Solid | Electrical Resistivity | 331 nΩ⋅m (20°C) |
| Melting Point | 2,506 K (2,233°C, 4,051°F) | Magnetic Ordering | Paramagnetic |
| Tensile Strength | 485Mpa/70,300psi | Young'S Modulus | 78 GPa |
| Density (Near R.T.) | 13.31 g/cm3 | Shear Modulus | 30 GPa |
| Appearance | Shiny Silvery Metallic | Bulk Modulus | 110 GPa |
| Heat Of Fusion | 27.2 kJ/mol | Poisson Ratio | 0.37 |
| Heat Of Vaporization | 648 kJ/mol | Mohs Hardness | 5.5 |
| Molar Heat Capacity | 25.73 J/(mol·K) | Vickers Hardness | 1,520–2,060 MPa |
| Thermal Expansion | 5.9 µm/(m⋅K) (at 25°C) | Brinell Hardness | 1,450–2,100 MPa |
| Thermal Conductivity | 23.0 W/(m⋅K) | Cas Number | 7440-58-6 |
Elemental context: Royal Society of Chemistry — Hafnium.
Use the verified product directory for published routes. Additional named forms or chemistries require review against the drawing and specification; this overview is not a stock, qualification or delivery commitment.
Hafnium Metal
Shapes: foil, wire, and customized
Hafnium Crystal Bar
Hafnium crystal bar: specify the required assay, zirconium limit and analysis.
Technical background for selection. Confirm the actual material, product standard and purchase requirements for your order.
Technical background for selection. Confirm the actual material, product standard and purchase requirements for your order.
Technical background for selection. Confirm the actual material, product standard and purchase requirements for your order.
Technical background for selection. Confirm the actual material, product standard and purchase requirements for your order.
For your quotation: provide material and grade or composition, product form, dimensions or drawing revision, quantity, condition and surface, operating temperature/atmosphere, and required analysis, inspection or traceability documents.
