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Niobium rod purity >99.9% clean surface
Niobium rods Niobium alloy rods:
Standard: ASTM B392 R04200, R04210, R04261
Size: DIA 2~150mm
Purity: >=99.9% or 99.95%
Specifiation could be negotiated
Mechnical properties
Grade(UNS) | Annealed | ||
Tensile strength min, psi (MPa) | Yield strength min,psi (MPa) | Elongation min, % (1 inch gage length) | |
R04200, R04210 | 18000 (125) | 10500 (73) | 25 |
R04251 | 28000(195) | 18000(125) | 20 |
R04261 | 28000(195) | 18000(125) | 20 |
Chemical Requirements
Content, Max, Weight % | |||||
Element | R04200 Unalloyed Niobium | R04210 Unalloyed Niobium | R04251 (Reactor grade niobium-1% Zirconium) | R04261 (Commercial grade niobium-1% Zirconium) | |
C | 0.010 | 0.010 | 0.010 | 0.010 | |
O | 0.015 | 0.025 | 0.015 | 0.025 | |
N | 0.010 | 0.010 | 0.010 | 0.010 | |
H | 0.0015 | 0.0015 | 0.0015 | 0.0015 | |
Fe | 0.005 | 0.010 | 0.005 | 0.010 | |
Mo | 0.010 | 0.020 | 0.010 | 0.050 | |
Ta | 0.100 | 0.300 | 0.10 | 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 |