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分类清单

Melting niobium

Melting niobium
Uses:

Mainly used as the additive in producing niobium powder, niobium-based alloys, superconducting materials and high-temperature alloy steel; the permanent magnetic material and magnetic head in magnet materials as well as the electronic bombardment niobium ingot and niobium alloy ingot, etc.
  The product quality standard implements corporate standard Q/DFT 001-2000
Packing
 The product is packed in iron barrel and the net weight is50kg each barrel.
Physical state
It is delivered or supplied in blocks or power. The weight of the largest ferroniobiun block should not exceed 8kg; the amount of fragment with the size less than 20mm*20mm should not exceed 5% of the total amount .
Grade and chemical composition

Grade

Impurity content, %, not more than

Ta

C

N

O

H

Fe

Si

NT-1

0.1

0.01

0.03

0.04

0.002

0.01

0.03

NT-2

0.2

0.02

0.04

0.06

0.002

0.02

0.05

-

W

Mo

Zr

Ti

Cr

Ni

Cu

NT-1

0.003

0.005

0.005

0.005

0.005

0.005

0.003

NT-2

0.01

0.01

0.005

0.005

0.005

0.005

0.003

    Note: ① Surface oxidation and contamination are prohibited.
    Note: ② No inclusions and raw material in the cross section.
    Note: ③ The cross section size should not exceed 20mm×200mm and the length should not exceed 1,800mm.


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