Zr702 Pure Zirconium Tube UNS R60702 For Industrial Pipeline Systems ASME SB658
Pure Zirconium Tube is a rare metal with amazing corrosion resistance, high melting point, super hardness and strength. Zirconium tube 702 is widely used in aerospace, military, nuclear reaction and atomic energy fields. General industrial zirconium is mainly used in the chemical and electronic industries, mainly for the corrosion resistance and conductivity of zirconium tubes.
CHEMICAL COMPOSITIONS
| Type | Zr+Hf | Hf | Fe+Cr | H | N | C | O | Nb |
| Zr702 | >99.2 | <4.5 | <0.2 | <0.005 | <0.025 | <0.05 | <0.16 | / |
| Zr705 | 95.5 | <4.5 | <0.2 | <0.005 | <0.025 | <0.05 | <0.18 | 2.0-3.0 |
PHYSICAL PROPERTIES (NOMINAL)
Density: 6.51g/cc
Melting point: 1852°C
Thermal conductivity: 22W/(m °C)
Elastic bended modulus: 99.6GPa
Thermal expansions: 5.4x10 /°C
Zirconium Corrosion Resistance & Application
Zirconium is completely resistant to alkali solutions and molten alkalis. The corrosion resistance of zirconium in sodium hydroxide medium is the same as that of nickel. Because zirconium has excellent corrosion resistance, it is much better than tantalum and precious metals in many cases. In addition, zirconium also has good mechanical properties and high temperature resistance.
Therefore, zirconium is mainly used in chemical equipment, especially equipment that requires high corrosion resistance. Zirconium is mainly used in the manufacture of heat exchangers, container linings, valves, pump casings, blades, agitators, pipelines, etc. in chemical equipment. Zirconium is used in many chemical equipment for the production of fertilizers, resins, plastics and acids.
Pure Zirconium Tube Picture:
PARAMETERS (STANDARD)
Zr702 and Zr705 should be ASTM numbers. The only difference in composition is that the oxygen content of zr705 is a little higher, Zr702 is less than 0.16, and zr705 is less than 0.18. However, the mechanical properties of zr705 are better than that of Zr702. There is not much difference in corrosion resistance.
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