What is zircaloy made of?

Zircaloy-2 (Grade R60802) is composed of Zr-1.5%Sn- 0.15þ-0.1%Cr-0.05%Ni and has been predominantly used as fuel cladding in Boiling Water Reactors (BWR) and as calandria tubing in CANadian Deuterium Uranium (CANDU) reactor types.

What is Zirlo?

ZIRLO® material is an advanced zirconium-based alloy that has high corrosion resistance to reactor coolant, fuel and fission products. Optimized ZIRLO is being used in new applications including Boiling Water Reactor (BWR) components and demonstrating performance to Zircaloy-2 alloys that have been the BWR standard.

What is zirconium alloy used for?

Zirconium has very low absorption cross-section of thermal neutrons, high hardness, ductility and corrosion resistance. One of the main uses of zirconium alloys is in nuclear technology, as cladding of fuel rods in nuclear reactors, especially water reactors.

Why are fuel rods made of zirconium?

Zirconium is the metal of choice in this application because it absorbs relatively few of the neutrons produced in a fission reaction and because the metal is highly resistant to both heat and chemical corrosion. …

Which is better controlled composition Zircaloy or Standard Grade?

Controlled Composition Zircaloy offers optimized in-reactor corrosion resistance by adjusting the alloy aim point within the ASTM specification ranges. Controlled Composition Zircaloy-4 has lower tin (1.3%) and higher iron (0.22%) than the standard grade.

What is the composition of Zircaloy-4 fuel cladding?

The alloy is typically used as fuel cladding in Pressurized Water Reactors (PWR) and CANDU reactors. The nominal Zircaloy-4 composition is Zr-1.5%Sn-0.2%Fe-0.1%Cr. Refinements in the ingot homogeneity have allowed tighter control of the alloy elements within the ASTM specification.

What are the physical properties of zircaloy 4?

Physical Properties Properties Metric Imperial Density 6.56 g/cm³ 0.237 lb/in³ Melting point 1850°C 3360°F

What are the anisotropic properties of zircaloy strip?

The anisotropic properties of Zircaloy strip results in significantly higher yield strength values in the transverse direction. The control of crystallographic orientation allows designers to optimize material properties.