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Niobium Rod
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Niobium Rod

Standard: ASTM B392-98

Dimensions:  4-100mm

Niobium rod , Niobium bar

Material:  RO4200-1, RO4210-2

Size:      4~100mm

Standard:  As per ASTM B392-98

Purity:        >=99.9%  or  99.95%

Table.1 :Chemical composition: 

Chemistry                                                                PPM

Designation

Chief component

Impurities    maxmium

Nb

Ta

Si

Ni

W

Mo

Ti

Fe

O

C

H

N

Nb1

Remainder

700

50

50

50

30

20

50

150

40

15

30

Nb2

Remainder

1000

80

40

100

100

40

80

180

60

15

50

Table 2. Mechanical requirements (annealed condition)

 Grade

Tensile strength  bpsi (MPa),   

Yield strength  0.2, psi (MPa),

 Elongation in 1"/2" gage length, %,

RO4200-1

RO4210-2

 18000 (125)

12000 (85) 

25 

 

Special requirements to be agreed on by the supplier and buyer of negotiations

 

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