R04200 -Ke ʻano 1, ka niobium i hoʻopaʻa ʻole ʻia i ka pae Reactor;
R04210 -Ke ʻano 2, ʻO ka niobium i hoʻokaʻawale ʻole ʻia ka papa kālepa;
R04251 -Type 3, Reactor grade niobium alloy loaʻa ka 1% zirconium;
R04261 -Type 4, Pākuʻi pāʻoihana niobium alloy i loaʻa ka 1% zirconium;