ASTM B737 Standard Non Ferrous Alloys Hafnium Wire For Atomic Energy Industry
Hafnium Wire ASTM B737 Purity 99.95% Drawing cleaned bright wrie
- Description
Hafnium wire is drawn by hafnium rod.
Purity: Hf+Zr≥99.95%
Form: wire, straight wire, pellets, 0.5-6*Lmm
Application: Plasma cutting, optical coating
Pure hafnium has plasticity, easy processing, high temperature corrosion resistance, is an important material for atomic energy industry. Large thermal neutron capture cross section of hafnium is an ideal neutron absorber control rods and can be used for protection of the nuclear reactor. Hafnium powder can be used for rocket propulsion. In the electronic industry for producing X-ray tube cathode.
ASTM B737 Standard covers two grades of wrought hafnium and hafnium alloy Rod Wire Hot Rolled or Cold Rolled
Grade R1 for nuclear applications, and Grade R3 for commercial applications.
| Symbol: | Hafnium Rod |
| Atomic Number: | 72 |
| Atomic Weight: | 178.49 |
| Density: | 13.31 gm/cc |
| Melting Point: | 2227 oC |
| Boiling Point: | 4602 oC |
| Thermal Conductivity: | 0.230 W/cm/K @ 298.2 K |
| Electrical Resistivity: | 35.1 microhm-cm @ 25 oC |
| Electronegativity: | 1.3 Paulings |
| Specific Heat: | 0.035 Cal/g/K @ 25 oC |
| Heat of Vaporization: | 155 K-Cal/gm atom at 4602 oC |
| Heat of Fusion: | 6.0 Cal/gm mole |
| Thermal Neutron Cross Section: | 115 Barns |
Hafnium Wire, Bar, Plate , Pellets , Cylinder can be used as evaporation material, sputtering target . Hafnium wire application Application used in Plasma cutting, optical coating . Diameter 1.5mm 3mm etc. A control rod for a nuclear reactor according to the present invention is such that neutron absorbing rods are surrounded with a second neutron absorber which differs in material .
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