Niobium Bar
Item: Niobium Bar
Standards: ASTM B392-98, GB/T14842-2007
Material: R04200-1, R04210-2 (Nb1、Nb2)
Diameter: 4~100 mm
Purity: Nb>99.95% or >99.99%
Shape: Round, Square, Hexagon, Rectangle.
Finish: Black, Pickling, Sand-blasting, Polished
Packing: Standard seaworthy packages or as your requests
Third-party inspection: Acceptable
Product Introduction
Description
Niobium Rod (Niobium Bar) is worked from ingot to final diameter, forging, rolling, swaging, and drawing are used singularly or in combination to reach the desired size. We emphasize absolute precision during the production of our niobium rod, TNTI insists on particularly low tolerances in terms of both diameter and roundness and guarantees the rod of exceptional straightness.
Niobium round bar is manufactured as random length pieces or cut to customers' desired lengths in diameters ranging from 4mm to 100mm. Please view Niobium Rod to see our standard sizes of niobium round bars. Below are most of the standard sizes of our niobium rectangular bars. If you do not see the required niobium bar size, please feel free to contact us.
|
Width |
Thickness |
Length |
Length Tolerance |
|
15mm |
15mm |
600mm |
+1mm, -0 |
|
20mm |
20mm |
1000mm |
+1mm, -0 |
|
45mm |
45mm |
1200mm |
+2mm, -0 |
|
60mm |
60mm |
1500mm |
+3mm, -0 |
Chemical Composition
|
Grade |
TNb1 |
TNb2 |
|
|
Impurity content%, max |
Ta |
0.1 |
0.15 |
|
O |
0.05 |
0.15 |
|
|
N |
0.03 |
0.05 |
|
|
C |
0.02 |
0.03 |
|
|
Si |
0.003 |
0.005 |
|
|
Fe |
0.005 |
0.02 |
|
|
W |
0.005 |
0.01 |
|
|
Mo |
0.005 |
0.005 |
|
|
Ti |
0.005 |
0.01 |
|
|
Al |
0.003 |
0.005 |
|
|
Cu |
0.002 |
0.003 |
|
|
Cr |
0.005 |
0.005 |
|
|
Ni |
0.005 |
0.01 |
|
|
Zr |
0.02 |
0.02 |
|
|
Size |
≥14×14×300 |
≥14×14×300 |
|
|
The flexural tolerance along the length of bars shall not be over 1% of the length |
|||
Special requirements to be agreed upon by the supplier and buyer
Applications
With a high melting point, excellent anti-corrosion properties, and workability in a cold environment, Nb, Nb alloy tubes, rods, and wire are widely used in chemistry, electronics, aviation, and aerospace industries. They can be applied as nozzles, structural parts for airplane engines, inside elements, protection material for the nuclear reactor, anti-corrosion parts under strong acid, or environment. Your special requests are welcomed.
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 |
Mechanical requirements
|
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 |
Inspection
Corrosion test
Eddy Current test
Mechanical test
Microstructure test
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