Commodity: tantalum tube
Standard: ASTM B521-98
Dimension: Dia φ1.0-120mm
Material: RO5200, RO5400, RO5252(Ta-2.5W), RO5255(Ta-10W)
size: Diameter: φ1.0-120mm
Thickness: 0.2-5.0mm
Length: 200mm-6000mm
Standard: As per ASTM B521-98
Purity: >=99.95% or 99.99%
Standard: ASTM B521-98
Dimension: Dia φ1.0-120mm
Material: RO5200, RO5400, RO5252(Ta-2.5W), RO5255(Ta-10W)
size: Diameter: φ1.0-120mm
Thickness: 0.2-5.0mm
Length: 200mm-6000mm
Standard: As per ASTM B521-98
Purity: >=99.95% or 99.99%
Table Ⅰ. Chemical composition:
|
Chemistry ppm
|
||||||||||||
|
Designation
|
Chief component
|
Impurities maxmium
|
||||||||||
|
Ta
|
Nb
|
Fe
|
Si
|
Ni
|
W
|
Mo
|
Ti
|
O
|
C
|
H
|
N
|
|
|
Ta1
|
Remainder
|
300
|
40
|
30
|
20
|
40
|
40
|
20
|
150
|
40
|
15
|
20
|
|
Ta2
|
Remainder
|
800
|
100
|
100
|
50
|
200
|
200
|
50
|
200
|
100
|
15
|
100
|
|
TaNb3
|
Remainder
|
＜35000
|
100
|
100
|
50
|
200
|
200
|
50
|
200
|
100
|
15
|
100
|
|
TaNb20
|
Remainder
|
170000-
230000
|
100
|
100
|
50
|
200
|
200
|
50
|
200
|
100
|
15
|
100
|
|
Ta2.5W
|
Remainder
|
400
|
50
|
30
|
20
|
30000
|
60
|
20
|
150
|
50
|
15
|
60
|
|
Ta10W
|
Remainder
|
400
|
50
|
30
|
20
|
110000
|
60
|
20
|
150
|
50
|
15
|
60
|
TableⅡ. Permissible variations in diameter & wall thickness
|
Outside diameter, inch (mm)
|
Diameter tolerance, inch(mm), +/-
|
Permissible variation in wall thickness, %, +/-
|
|
<1 (25.4)
|
0.004 (0.102)
|
10
|
|
1~1.5 (25.4~38.1)
|
0.005 (0.127)
|
10
|
|
1.5~2 (38.1~50.8)
|
0.006 (0.152)
|
10
|
|
2~2.5 (50.8~63.5)
|
0.007 (0.178)
|
10
|
|
2.5~3.5 (63.5~88.9)
|
0.010 (0.254)
|
10
|
TableⅢ . Mechanical requirements (annealed condition)
|
Grade
|
Tensile strength δbpsi (MPa), ≥
|
Yield strength δ0.2, psi (MPa),≥
|
Elongation in 1"/2" gage length, %, ≥
|
|
RO5200/RO5400
|
30000 (207)
|
20000 (138)
|
25
|
|
RO5252
|
40000 (276)
|
28000 (193)
|
20
|
|
RO5255
|
70000 (481)
|
60000 (414)
|
15
|
|
RO5240
|
40000 (276)
|
28000 (193)
|
20
|
Special requirements to be agreed on by the supplier and buyer of negotiation
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