ASTM B737 Hafnium Rod, Wire, and Particles
- Type: Rod, Wire, Particles
- Rod Dia: 6 – 120 mm, Length: ≤6000mmm
- Wire Dia: 0.5 – 9.5mm (Straight Wire, Coiled Wire, Coiled on Spools)
- Particle Dia: 2 – 30mm x Length 2-30mm
- Hot-Rolled, Cold-Finished
ASTM B737 Hafnium Rod, Wire, and Particles
Golden Sunbird Metals supplies premium ASTM B737 hafnium rod, wire, and particles engineered for exceptional neutron absorption and superior corrosion resistance in the most demanding nuclear, aerospace, and high-temperature environments. Available in two grades—R1 (Nuclear Grade) for critical nuclear-service applications and R3 (Alloying Grade) for commercial alloying—these products are offered in hot-rolled, cold-finished, annealed, descaled, and pickled conditions with clean, smooth surface finishes. Dimensions include rod (diameter 6–120 mm, length up to 6000 mm), wire (diameter 0.5–9.5 mm in straight, coiled, or spool forms), and particles (2–30 mm). Ideal for nuclear reactor control rods and neutron-absorbing components, high-temperature aerospace superalloys, plasma cutting torches, chemical and electronic components requiring thermal stability, our ASTM B737 products deliver proven mechanical strength and long service life. Supplied with EN 10204 Type 3.1 or 3.2 certification and full testing (chemical analysis, tensile, hardness, and NDT), GS Alloy provides reliable, high-performance hafnium rod, wire, and particles solutions tailored to your exact specifications. Contact us today for a competitive quote and fast global delivery.
Chemical Composition (wt.%) of ASTM B737 Hafnium Rod, Wire, and Particles
| Element | Grade R1 (Nuclear Grade) | Grade R3 (Alloying Grade) |
| Aluminum | 0.01% | 0.05% |
| Carbon | 0.02% | 0.03% |
| Chromium | 0.01% | 0.05% |
| Copper | 0.01% | – |
| Hydrogen | 0.00% | 0.01% |
| Iron | 0.05% | 0.08% |
| Molybdenum | 0.00% | – |
| Nickel | 0.01% | – |
| Niobium | 0.01% | – |
| Nitrogen | 0.01% | 0.02% |
| Oxygen | 0.04% | 0.13% |
| Silicon | 0.01% | 0.05% |
| Tantalum | 0.02% | – |
| Tin | 0.01% | – |
| Titanium | 0.01% | 0.05% |
| Tungsten | 0.02% | 0.02% |
| Uranium | 0.00% | – |
| Vanadium | 0.01% | – |
| Zirconium | Reportable | Reportable |
| Hafnium | Balance | Balance |
Mechanical Properties (Grade R1 – Rod) of of ASTM B737 Hafnium Rod, Wire, and Particles
| Condition | Test Temperature | Tensile Strength (min) | Yield Strength (min) | Elongation (min) |
| Annealed | Room Temperature | 58 ksi (400 MPa) | 22 ksi (150 MPa) | 22% |
| Annealed | 600°F (315°C) | 25 ksi (170 MPa) | 11 ksi (75 MPa) | 32% |
Features
- ASTM B737 hafnium rod and wire for nuclear and commercial alloying applications.
- Available in two grades: R1 for nuclear applications and R3 for commercial alloying applications.
- Rod sizes cover 3/8 to 1 in. (9.5 to 25 mm) in diameter.
- Wire sizes are less than 3/8 in. (9.5 mm) in diameter.
- Supplied hot-worked or cold-finished, with annealed, descaled, and pickled options available.
- High hafnium purity with controlled chemistry for demanding nuclear and high-temperature use.
Technical Specifications
| Specification | Value |
| Standard | ASTM B737 Hot-Rolled and/or Cold-Finished Hafnium Rod, Wire and Particles |
| Grade | R1, R3 |
| Type | Rod, Wire and Particles |
| Size | Rod Dia: 6 – 120 mm, Length: ≤6000mmm Wire Dia: 0.5 – 9.5mm (Straight Wire, Coiled Wire, Coiled on Spools) Particle Dia: 2 – 30mm x Length 2-30mm |
| Condition & Finish | Hot-Rolled, Cold-Finished; clean and smooth surface finish |
| Inspection Certificate | EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection) |
| Test | Chemical Analysis, Tensile Test, Hardness Test, Nondestructive Testing (NDT) |
Applications
- Nuclear reactor control rods and neutron-absorbing components. Grade R1 is specifically intended for nuclear service.
- Radiation-shielding and reactor-safety components.
- Alloying addition for high-temperature superalloys used in aerospace and turbine systems. Grade R3 is intended for commercial alloying applications.
- Plasma torch and plasma cutting components where hafnium’s high-temperature performance is valuable.
- Chemical and electronic components that need corrosion resistance and thermal stability.
