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Niobium series

Nb &Nb-alloy Ingots

Physical Properties: The product have high melting point, excellent resistance to corrosion and good workability Applications: The product can be used to process various niobium mill products which are widely applied for pharmacy, semiconductor, aviatio

Size(mm):Ф(70-295)×≤1600.
Packing:Packed in wooden boxes with soft linings to support.
Chemical Composition:
Elements         Concentrations(%,≤)
ASTMB391-96 Q/DFT 011-2008
1TypeRO4200 2TypeRO4210 3TypeRO4251 4TypeRO4261 ND-T ND-1 ND-2
C 0.01 0.01 0.01 0.01 0.002 0.005 0.01
N 0.01 0.01 0.01 0.01 0.002 0.002 0.01
O 0.015 0.025 0.015 0.025 0.008 0.01 0.015
H 0.0015 0.0015 0.0015 0.0015 0.001 0.001 0.0015
Zr 0.02 0.02 0.8~1.2 0.8~1.2 0.001 0.002 0.005
Ta 0.1 0.2 0.1 0.5 0.01 0.15 0.2
Fe 0.005 0.01 0.005 0.01 0.001 0.002 0.005
Si 0.005 0.005 0.005 0.005 0.001 0.001 0.005
W 0.03 0.05 0.03 0.05 0.001 0.003 0.01
Ni 0.005 0.005 0.005 0.005 0.001 0.001 0.005
Mo 0.010 0.010 0.010 0.05 0.001 0.003 0.01
Hf 0.02 0.02 0.02 0.02 - - -
B 0.0002 - 0.0002 - - - -
Al 0.002 0.005 0.002 0.005 0.001 0.001 0.005
Be 0.005 - 0.005 - - - -
Cr 0.002 - 0.002 - 0.001 0.001 0.005
Co 0.002 - 0.002 - - - --
Cu         0.001 0.001 0.005
Mn         0.001 0.003 0.005
Ti         0.001 0.001 0.005
 
Note:1. Chemical composition of High-purity Nb Ingots:
  Grade Level Remarks
High-purityNbIngots 3N5(99.95%)、
4N(99.99%)
Total concentration of all impurities should be no more than 500ppm
Total concentration of all impurities should be no more than 100ppm
High-purityNbfor Superconducting RRR300 C、N、O≤10ppm,H≤2ppm
2. Nb-Zr, Nb-W and Nb-W-Mo alloy ingots are also available upon customers ,  request.

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