Brief introduction:

Tantalum pipe

is manufactured from tantalum powder by shaping, sintering and polishing. Seamless tantalum pipe is made from tantalum bar and seamed tantalum pipe is manufactured from tantalum sheet through processing.
Material:     RO5200， RO5400， RO5252(Ta-2.5W)， RO5255(Ta-10W)
Size:            Diameter: φ1.0-150mm
Thickness: 0.2-5.0mm
Length:       200mm-6000mm　　　　　　　
Standard:   As per ASTM B521-98

Properties of tantalum pipe:
Tantalum pipe has such properties as good strength and hardness, low density, light weight, high temperature resistance, low temperature resistance, good mechanical properties, excellent corrosion resistance.

Applications of tantalum pipe:
Tantalum pipe is generally used in chemical equipment, especially the main heat transfer equipment. Tantalum pipe also can be used in electric power industry, metallurgical industry, fertilizer industry, seawater desalination industry.

Table 1. Chemical composition:

chemistry%
designation	chief component		impurities maximum
	Ta	Nb	Fe	Si	Ni	W	Mo	Ti	Nb	O	C	H	N
Ta1	Remainder		0.004	0.003	0.002	0.004	0.006	0.002	0.03	0.01	0.004	0.0015	0.002
Ta2	Remainder		0.01	0.01	0.005	0.02	0.02	0.005	0.08	0.015	0.01	0.0015	0.01
TaNb3	Remainder	<3.5	0.01	0.01	0.005	0.02	0.02	0.005		0.015	0.01	0.0015	0.01
TaNb20	Remainder	17.0-23.0	0.01	0.01	0.005	0.02	0.02	0.005		0.015	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
special require of tantalum wire to be agreed on by the supplier and buyer of negotiations.

Table2. 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)	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)

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