Zr 702 Pure Zirconium Wire/Line on sale in stockGrade : UNS R60702 Type : Wire, pipe, bar, discs, target
Zirconium 702, 704, 705
Pure Zirconium Zr702 Zr704 Zr705 Zirconium wire
Zirconium 702 is a commercially pure Zirconium. Zirconium is a
reactive metal that has a high affinity for oxygen resulting inthe
formation of a protective oxide layer in air at room temperature.
This protective oxide gives Zirconium alloys their superior
corrosion resistance. This oxide layer can be enhanced through a
heat treating process. A properly formed enhanced oxide layer
serves as an excellent bearing surface against a variety of
materials, imparts impressive erosion resistance in high velocity
systems and can improve the corrosion restance in certain
aggressive environments.
Zirconium alloys exhibit good ductility even at cryogenic
temperatures and good strength comparable with
other common engineering alloys.
Chemical Composition,%
| Zr 702 | Zr 704 | Zr 705 | Zircaloy-2 | Zircaloy-4 |
Sn | / | 1~2% | 1~2% | 1.2~1.7% | 1.2~1.7% |
Fe | <0.05% | 0.1~0.2% | <0.05% | 0.07~0.2% | 0.07~0.2% |
Cr | <0.05% | 0.1~0.2% | <0.01% | 0.05~0.15% | 0.05~0.15% |
Ni | / | / | / | 0.03~0.08% | <0.007% |
Hf | 1~2.5% | <4.5% | <4.5% | <200ppm for Nuclear industry | <200ppm for Nuclear industry |
Nb | / | / | 2~3% |
|
|
Zr+Hf | ~99.5% | ~97.5% | ~95.5% | ~98% | ~98% |
Physical Constants and Thermal Properties
Density | g/cm3 | 6.51 |
Melting range | °C | 1852 |
Thermal conductivity | W/(m°K) | 22.7 |
Specific heat | J/kg•°C | 275 |
Electrical resistivity | ohm -cm | 397e-005 |
Modulus of elasticity | GPa | 99.2 |
Poisson ratio |
| 0.35 |
Coefficient of expansion |
| 5.89 x 106 |
Typical Mechanical Properties (Annealed)
Material | State | Rm(≥)/MPa | Rp0.2(Pa | A50mm(≥)/% |
Zirconium 702 (UNS R60702) | annealed | 379 | 207 | 16 |
Zirconium 704 (UNS R60704) | annealed | 413 | 241 | 14 |
Zirconium 705 (UNS R60705) | annealed | 552 | 379 | 16 |
Applications
• Used to make high temperature superconductive materials.
• Used to make electrodes components, foils, flanges bolts, tubes
and rods for special applications.
• Used for applications in medical equipment, such as zirconium
implants.
• Used as raw material for reactors and crucibles.
