Advanced Metals
Zirconium 702
Density: 6.5 g/cc
Melting point: 1852°C
Maximum service temperature: 550°C / 1020°F
UNS No: R60702
Zirconium 702 (Zr702) is a commercially pure Zirconium. Zr702 has the best corrosion resistance than Z704 and Zr705 but the lowest tensile strength. It exhibits good ductility even at cryogenic temperatures and good strength comparable with other common engineering alloys. Zirconium is a reactive metal that has a high affinity for oxygen resulting in the formation of a protective passive oxide film in air at room temperature. This passive film gives zirconium alloys their superior corrosion resistance.
Chemical composition (wt%, max.)
|
Grade |
UNS |
Zr+Hf |
Hf |
Fe+Cr |
H |
N |
C |
O |
|
Zr702 |
R60702 |
≥99.2 |
4.5 |
0.2 |
0.005 |
0.025 |
0.05 |
0.16 |
Mechanical properties
Grade
Condition
Tensile strength
Yield strength
Elongation in 50 mm
Zr702
Annealed
380
205
16
(MPa, min.)
(MPa, min.)
(%, min.)
Available forms
● Ingot
● Tube and pipe
● Forged ring, disc
● Rod and bar
● Crystal bar
● Plate and sheet
● Strip and foil
● Wire, welding wire
● Pipe fittings
● Fasteners
● Anode basket
● Custom-made
Specification
▲ ASTM B493/493M - Forging
▲ ASTM B550/550M - Rod, wire
▲ ASTM B551/551M - Plate, sheet
▲ ASTM B658/B658M - Tube, pipe
▲ ASTM B523/B523M - Tube, pipe
▲ ASTM B653 / B653M - Pipe fittings
▲ AWS A5.24/A5.24M - Welding wire
▲ ASTM B898 - Clad metal
Characteristics of Zirconium 702
Excellent corrosion resistance to organic and mineral acids
Good ductility even at cryogenic temperatures
Very good resistance to corrosion in strong alkalis
High strength capability
Low thermal conductivity
Typical application
Chemical Processing Industry
Heat Exchangers
Cooling systems
Automotive parts
Thin Film Deposition
Jewelry
