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