Tantalum tube Tantalum capillary tube
Tantalum tungsten alloy tube Tantalum tungsten alloy tube
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 1. Chemical composition:
Designation | Chief component | Impurities maxmium | |||||||||||
Ta | Nb | Fe | Si | Ni | W | Mo | Ti | Nb | O | C | H | N | |
Ta1 | Remainder | 0.004 | 0.003 | 0.002 | 0.004 | 0.004 | 0.002 | 0.03 | 0.015 | 0.004 | 0.0015 | 0.002 | |
Ta2 | Remainder | 0.01 | 0.01 | 0.005 | 0.02 | 0.02 | 0.005 | 0.08 | 0.02 | 0.01 | 0.0015 | 0.01 | |
TaNb3 | Remainder | 3.5 | 0.01 | 0.01 | 0.005 | 0.02 | 0.02 | 0.005 | 0.02 | 0.01 | 0.0015 | 0.01 | |
TaNb20 | Remainder | 17.023.0 | 0.01 | 0.01 | 0.005 | 0.02 | 0.02 | 0.005 | 0.02 | 0.01 | 0.0015 | 0.01 | |
Ta2.5W | Remainder | 0.005 | 0.003 | 0.002 | 3.0 | 0.006 | 0.002 | 0.04 | 0.015 | 0.005 | 0.0015 | 0.006 | |
Ta10W | Remainder | 0.005 | 0.003 | 0.002 | 11 | 0.006 | 0.002 | 0.04 | 0.015 | 0.005 | 0.0015 | 0.006 | |
Table2. Permissible variations in diameter & wall thickness
Diameter tolerance, inch(mm), +/- | Permissible variaton in wall thickness, %, +/- | |
<1 (25.4) | 0.004 (0.102) | >5 |
1~1.5 (25.4~38.1) | 0.005 (0.127) | >5 |
1.5~2 (38.1~50.8) | 0.006 (0.152) | >5 |
2~2.5 (50.8~63.5) | 0.007 (0.178) | >5 |
2.5~3.5 (63.5~88.9) | 0.010 (0.254) | >5 |
Table3. Mechanical requirements (annealed condition)
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 |
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