tantalum tube

Detailed Product Description

Baoji Zhong Bang rare metal materials CO.,LTD holds Tantalum ,Niobium as the dominant products in the scope of rare metal new materials, including many sorts and grades of their metals, sheet, tube, wire ,rod ,crucible , target ,alloy and so on.

Tantalum features high melting point , low vapor pressure , good cold processability ,excellent chemical stability , good resistance to corrosion , high dielectric constant ,in surface oxide film .widely used in many industries such as electronics ,metallurgy, chemical processing , hard alloy cutters , aerospace and aviation.

 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:

Chemistry                                                                %
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

Table2. Permissible variations in diameter & wall thickness

Outside diameter, inch (mm)	Diameter tolerance, inch(mm), +/-	Permissible variaton 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

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