ASME SB-658 Zirconium Alloy Piping UNS R60705 For Transmission Pipeline Systems

ASME SB-658 Zirconium Alloy Piping UNS R60705 For Transmission Pipeline Systems

Zirconium Alloy Piping is a solid solution of zirconium or other metals, which is a common subclass with the trademark of zirconium alloy. Zirconium has a very low thermal neutron absorption cross section, high hardness, ductility and corrosion resistance. One of the main uses of zirconium alloy is in nuclear technology, as a cladding for fuel rods in nuclear reactors, especially water reactors. The typical composition of nuclear grade zirconium alloy is more than 95% zirconium and less than 2% tin, niobium, iron, chromium, nickel and other metals. These metals are added to improve mechanical properties and corrosion resistance.

CHEMICAL COMPOSITIONS (NOMINALS)

PHYSICAL PROPERTIES (NOMINALS)

Density: 6.51 g/cc
Melting Point: 1852°C
Thermal Conductivity: 22 W/(m °C)
Elastic bend modulus: 99.3 GPa
Thermal Expansions: 5.4x10 /°C

PARAMETERS (NOMINALS)

• Specification: seamless pipe OD(8-152) * t (0.5-15) * L (≤ 9000) mm, welded pipe (outer diameter ≥ 10mm)

• Executive Standards: ASTM B523 / B523M-18, ASME SB-523, ASTM B658 / B658M-11, ASME SB-658 / SB-658M

APPLICATIONS

Zirconium alloy piping is an alloy tube material made of zirconium and other metals. Due to its excellent nuclear corrosion resistance, zirconium alloy tubes have been widely used in nuclear fuel assemblies and water-cooled reactor core structures. Pure zirconium tubes are mainly used to manufacture chemical equipment and transmission pipeline systems.

Zirconium Alloy Piping Picture

FEATURES of ZIRCONIUM

Zirconium is a kind of metal with strong corrosion resistance, which is suitable for chemical corrosion-resistant equipment. Its acid resistance is better than that of titanium and various steels, and close to that of tantalum. Zirconium is also quite stable in alkali solution.

Zirconium is completely resistant to alkali solution and molten alkali. 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.