ZIRCONIUM  
 
 

Zirconium is resistant to corrosion in most organic and mineral acids, alkalis, and some molten salts.

Zirconium performs well in superheated water and is transparent to thermal neutrons, it has been used since the 1950's as cladding for nuclear fuels. It is still used in water-cooled nuclear reactors. Zirconium is also used in the chemical processing industry, flashbulbs and incendiary ordnance, and is a gettering material in sealed vacuum devices.

Zirc 702 is commercially pure grade, which is chosen for most applications because of its corrosion resistance.

Zirc 705 is alloyed with 2 to 3% Columbium, which is stronger and more ductile than Zirc 702 with almost equal corrosion resistance. It is the alloy of choice for fasteners.

Zirc 706, by having a lower oxygen content, that causes lower tensile properties but greater elongation.

   
Material
C
Fe + Cr
H
Hf
N
Nb
O
Zr + Hf
Zirc 702
<=0.05
<=0.20
<=0.005
<=4.5
<=0.025
2 - 3
<=0.16
99.2 - 100
Zirc 705
<=0.05
<=0.20
<=0.005
<=4.5
<=0.025
2 - 3
<=0.16
95 - 100
Zirc 706
<=0.05
<=0.02
<=0.005
<=4.5
<=0.025
2 - 3
<=0.16
95 - 100

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