星鸿娱乐下载

Niobium

Niobium

Niobium (Nb)

Symbol: Nb
Atomic number: 41
Atomic weight: 92.90637
Element category: transition metal
Niobium, formerly columbium, is a shiny, white, soft, and ductile metal, and takes on a bluish tinge when exposed to air at room temperatures for a long time. It resembles the element tantalum physically and chemically.
Niobium is used mostly as an alloying agent to produce high-temperature-resistant alloys or special steel. Super alloys containing niobium are widely used in various superconducting materials.
Niobium reacts with most nonmetals at high temperatures and forms different niobium compounds such as oxides, sulfides, halides, nitrides and carbides.

Niobium Metal:
Shapes: foil, sheet, strip, plate, board, rod, bar, wire, tube, pipe, ring, ingot, capillary tube, etc.;
Materials: R04200, R04210

Niobium Alloys:
Niobium Zirconium Alloy: ingot, foil, sheet, board, tube, pipe, rod, bar, wire, crucible, lump, etc.
Niobium Hafnium Alloy: ingot, foil, sheet, board, tube, pipe, rod, bar, wire, crucible, lump, etc.
Niobium Nickel Alloy: lump, foil, sheet, board, etc.

Niobium Compounds:
Niobium Oxide powder, Niobium Carbide powder, Niobium Oxalate, Niobium Chloride, Niobium Boride powder, Niobium Nitride powder, Niobium Silicide powder, etc.

Other Niobium Products:
Platinized Niobium Mesh Anode

Material:  RO4200, RO4210 

Purity: 99.7% 99.9%, 99.95%


Table 1. Chemical composition:

Chemical Composition (%)

Material

Main elements(%)

Impurities (Maximum %)

Nb

Fe

Si

Ni

W

Mo

Ti

Ta

O

C

H

N

RO4200

Remainder

0.004

0.004

0.002

0.005

0.005

0.002

0.07

0.015

0.0040

0.0015

0.003

RO4210

Remainder

0.01

0.01

0.005

0.02

0.01

0.004

0.10

0.02

0.01

0.0015

0.01

 

Table 2. Mechanical requirements (annealed condition)

Grade

Tensile strength  δbpsi (MPa), ≥

Yield strength  δ0.2, psi (MPa),≥

Elongation in 1"/2" gage length, %, ≥

>=0.010

<0.010

RO4200, RO4210

18000 (125)

12000 (85)

25

20

  • Related Products

      ,