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Niobium rod

CATEGORY AND TAGS:
Niobium

Product name: Niobium rod
Grade: Nb1.Nb2
Implementation standard: GB/T14842-2007
Purity:≥99.95%
Specification:Φ3.0~Φ100mm
Condition: annealed (M) or hard (Y).

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  • Product Description

1、Composition requirements.

Brand Nb1 Nb2 NbZr1 C-103 Cb752
Element

Content

(Quality

Score

%)

Zr 0.02 0.02 0.8~1.2 0.7 2.0~3.0
Ti 0.002 0.005 0.02 0.7~1.3 0.2
C 0.01 0.02 0.01 0.015 0.015
N 0.015 0.05 0.01 0.015 0.01
O 0.015 0.025 0.015 0.023 0.02
H 0.001 0.005 0.0015 0.002 0.0015
Ta 0.10 0.25 0.10 0.5 0.5
Fe 0.005 0.03 0.005
Si 0.005 0.02 0.005
W 0.03 0.05 0.03 0.5 9.0~11.0
Ni 0.005 0.01 0.005
Mo 0.010 0.05 0.01
Cr 0.002 0.01 0.002
Hf 9.0~11.0 0.2
Nb Residuals Residuals Residuals Residuals Residuals

2、Tolerance range.

Diameter or side length Allowable deviation of diameter or side length Length Cut-to-length

Allowable Deviation

Forging Rods extrusion stick Rolling bar Grinding rod 200~1500 +5
3.0~4.5 ±0.05 ±0.05 200~1500
>4.5~6.5 ±0.10 ±0.10 200~1500
>6.5~10.0 ±0.15 ±0.15 200~1500
>10.0~16.0 ±0.20 ±0.20 200~2000 +20
>16.0~18.0 ±1.0 ±0.30 200~2000
>18.0~25.0 ±1.50 ±1.0 ±0.40 200~2000
>25.0~40.0 ±2.0 ±1.5 ±0.50 200~2000
>40.0~50.0 ±2.50 ±2.0 ±0.60 200~2000
>50.0~65.0 ±3.00 ±2.0 ±0.80 200~2000
>65.0~150 ±4.00 ±3.0 ±1.00 200~1000

3、Mechanical properties.

Brand Diameter or side length/mm Tensile strength

σb /MPa

Yield strength

σs /MPa

Elongation

A / %

Nb1/NB2 3~18 ≥125 ≥85 ≥25

Uses: Niobium and niobium alloy rods and wires are widely used in chemical, electronic, aviation and aerospace fields due to their high melting point, corrosion resistance and good cold working properties.

Niobium and niobium alloy rods are used as structural materials for aero-engines and rocket nozzles, as internal components and cladding materials for reactors, and for making materials resistant to corrosive conditions of nitric, hydrochloric or sulfuric acid.

A variety of corrosion-resistant parts under the. The addition of zirconium to niobium significantly improves the oxidation resistance and strength of the material, and niobium and niobium-zirconium alloy wires are used in large quantities in the manufacture of high-pressure sodium lamps and

Electrolytic capacitor anode lead.
Appearance quality: The surface of cold worked and annealed bars shall be free of cracks, folds, porosity, metallic and non-metallic inclusions, heavy skin, residual lubricants, oxides and other dirt.
The surface of the bar in the hot worked state shall be free of cracks, folds, heavy skin and other defects affecting subsequent processing. The surface of the bar is allowed to have grooves with a depth of not more than half of the diameter tolerance. ConcavePits, scuffs, scratches, spiral stripes formed during straightening and slight wrought marks are allowed.

 

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