Niobium waya
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Niobium waya
R04200 -Ụdị 1, Reactor ọkwa unalloyed niobium;
R04210 -Type 2, Azụmahịa grade unalloyed niobium;
R04251 -Ụdị 3, Reactor ọkwa niobium alloy nwere 1% zirconium;
R04261 - Ụdị 4, Azụmahịa niobium alloy nwere 1% zirconium;
