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- Zirconium
Zirconium (Zr 702)
Zirconium has high affinity to oxygen that facilitates the formation of a protective oxide film which result a high corrosion resistant in the most acids. Zirconium is used in various applications in the nuclear industry. Furthermore in the chemical industry for valves, pumps, tubes and heat exchanger as well in the medical industry for the reason that zirconium is biocompatible and non-toxic.
Product Forms
- Wire
- Bar
- Sheet
- Plate
- Tube
- Pipe
Major Specifications
- ASTM B 523 (Tube)
- B 550 (Bar, Wire)
- B 551 (Plate, Sheet, Strip)
- B 658 (Pipe)
- B 653 (Fitting)
Nuclear Application:
- ASTM B 350 (Ingots)
- B 351 (Bar, Wire)
- B 352 (Plate, Sheet, Strip)
- UNS R60702
- R60704
- R60705
Chemical Composition,%
Limiting values (Zr 702)
Zr + H | min. 99.200 |
Hf | max. 4.500 |
Fe + Cr | max. 0.200 |
O | max. 0.160 |
C | max. 0.050 |
N | max. 0.025 |
H | max. 0.005 |
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)
Tensile Strength | MPa | min. 379 |
0.2 % Yield Strength | MPa | min. 207 |
Elongation | % | min. 16 |

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