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Zirconium Welded Piping is an alloy tube material made of zirconium and other metals. Due to its excellent nuclear and corrosion resistance, zirconium alloy tubes are often used in nuclear fuel assemblies and water-cooled reactor core structures. Pure zirconium tube is mainly used for manufacturing chemical equipment.
| 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 |
Density: 6.51g/cc
Melting point: 1852°C
Thermal conductivity: 22W/(m °C)
Elastic bending modulus: 99.6GPa
Thermal expansions: 5.4x10 /°C
The friction coefficient between zirconium and mould is high, and it is easy to adhere to the surface of the mold; The thermal effect of plastic deformation is remarkable, and good lubrication conditions are required during processing.
The processing specification has a sensitive influence on the performance of the product. In particular, the cold processing and heat treatment process before the finished product should be controlled to meet the requirements of use.
