... screw, ring, wire, foil, sheet, rod, strip, plate, tube, alloys Niobium plate R04200 -- 1 TYPE -- Reactor class non-alloyed Niobium.R04210 -- 2 TYPE ... class non-alloyed Niobium.R04251 -- 3 TYPE -- Include 1% Zr reactor Niboium alloys.R04261 -- 4 TYPE -- Include 1% Zr industrial ... including nut, screw ,ring ,wire, foil, sheet, rod, strip, plate, tube, alloys according to Standard ASTM AMS ASME MIL DMS ...