Superconducting Niobium Disc

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Superconducting Niobium Disc

Product Name	high quality superconducting niobium disc
Material	Pure niobium
Grade	RO4200.RO4210,R04251,R04261
Standard	ASTM B393
Process	Cold rolled, Hot rolled, Extruded , Polished
Characteristic	Melting point : 2468? / Boiling point : 4744?
Density	8.6 g/cm3
Product Features	Excellent Corrosion Resistance , Good resistance to effect of heat

TABLE 1. Chemical Requirements

Content, Max, Weight %
Element	Grand: R04200	Grand:R04210	Grand:R04251	Grand:R04261
Element	Unalloyed Niobium	Unalloyed Niobium	(Reactor grade niobium-1% Zirconium)	(Commercial grade niobium-1% Zirconium)
C	0.01	0.01	0.01	0.01
O	0.015	0.025	0.015	0.025
N	0.01	0.01	0.01	0.01
H	0.0015	0.0015	0.0015	0.0015
Fe	0.005	0.01	0.005	0.01
Mo	0.01	0.02	0.01	0.05
Ta	0.1	0.3	0.1	0.5
Ni	0.005	0.005	0.005	0.005
Si	0.005	0.005	0.005	0.005
Ti	0.02	0.03	0.02	0.03
W	0.03	0.05	0.03	0.05
Zr	0.02	0.02	0.8~1.2	0.8~1.2
Nb	Remainder	Remainder	Remainder	Remainder

TABLE 2.Mechanical Requirements

Grade(UNS)	Annealed
Grade(UNS)	Tensile strength min, psi (MPa)	Yield strength min,psi (MPa)(2%)	Elongation min, % (1 inch gage length)
R04200, R04210	18000 (125)	10500 (73)	15~20
R04251, R04261	28000 (195)	18000 (125)	15~20
R04220(RRR grade)	14000 (95)	7200 (50)	30

Titanium series

Tungsten series
Ammonium Tungstates, Powder, Bar, Slab, Wire, Sheet, Rod, Plate, electrode, Fabricated Parts (Ball, Tube, Cube, Target, Crucible etc.);

Molybdenum series

Ammonium Molybdate, Powder, Bar, Slab, Wire, Plate, electrode, Fabricated Parts (Pipe, Cube, Target, Crucible etc)

Tantalum series

Zirconium series

Niobium series

Cobalt series

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