Commercial non-nuclear grade zirconium typically contains 1–5% of Hafnium whose neutron absorption cross-section is 600x that of zirconium. Zirconium for Nuclear uses must contain 0% Hafnium. Known as Zr702 or Zircalloy - Zr 98,5%: Nb 1%, Fe 0,5%.
Zircalloy was developed as a replacement for existing tube bundles in submarine reactors in the 1950s, owing to a combination of strength, low neutron cross section and corrosion resistance.
THESE TUBES ARE NOT RADIOACTIVE
You will receive 1 Rod/tube. An amazing piece for an element collection. Great price.
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