Specs : according to ASTM F560-98 R05200.
Temper : As Drawn, cold-worked or annealed and purity conforms to the recognized standard by The Food and Drug Administration (FDA) for Unalloyed Tantalum Tubing for Surgical Implant Applications.
Size Available :
Tantalum capillary, tantalum fine tube, tantalum micro tube
Outer Diameter 0.020" up to 0.080" x Wall Thickness .001" up to .020" x Length up to 8 ft max. or
Outer Diameter 0.508 mm up to 2.032 mm x Wall Thickness 0.025mm up to 0.5 mm x Length up to 2540 mm max.

Tantalum tube, tantalum tubing
Outer Diameter 0.080" up to 0.75" x Wall  .007874" up to .20" x Length up to 8 ft max. or
Outer Diameter 2.0 up to 19.05 mm x Wall Thickness 0.20 up to 5 mm x Length up to 2540 meters max.

Typical Size :
(OD=Outside Diameter or Outer Diameter, ID=Inside Diameter or Inner Diameter, WT=Wall Thickness, LG=Length)
0.55mm OD x 0.35mm ID x 0.10mm WT x 5.08mm LG 
0.60mm OD x 0.40mm ID x 0.10mm WT x 100mm LG radiopaque marker for stents;
2.46mm OD x 2.41mm ID x 0.025mm WT x 7.87mm LG
3.57mm OD x 3.41mm ID x 0.080mm WT x 50.0mm LG

1.0mm OD x 0.24mm WT X 25mm LG (.040" OD x .021" ID x 1" LG)
1.0mm OD x 0.54mm ID x 0.23mm WT x 0.20" (50.8mm) LG;
1.0mm OD x 0.54mm ID x 0.23mm WT x 38.1mm LG;
1.0mm OD x 0.54mm ID x 0.23mm WT x 304.8mm LG;
1.0mm OD x 0.54mm ID x 0.23mm WT x 762mm LG;
1.016MM OD X 0.24MM WT X 38.1MM LG(.040" OD x .021" ID x 1.5" LG)
1.016MM OD X 0.24MM WT X 304.8MM LG(.040" OD x .021" ID x 1FT)
1.0414mm OD x 0.5588mm ID x 0.2413mm WT x 5.6896mm LG(OD=0.041", ID=0.022", WT=0.0095", LG=0.224");
1.20mm OD x 0.8mm ID x 0.20mm WT x 304.8mm LG;
1.30mm OD x 0.84mm ID x 0.23mm WT x 304.8mm LG;

1.50mm OD x 1.0mm ID x 0.25mm WT x 150mm LG;
1.50mm OD x 0.5mm ID x 0.50mm WT x 150mm LG;
1.5748MM OD x 0.813MM ID x 0.3809MM WT x 609.6MM LG (.062" OD x .032" ID x 24" LG)
1.5748MM OD x 0.813MM ID x 0.3809MM WT x 1200MM LG (.062" OD x .032" ID x 47.25" LG)
1.5748mm OD x 0.813mm ID x 1186mm(0.062"=OD, 0.032"=ID);
1.5875mm OD x 0.813mm ID x 0.3885mm WT x 1186mm LG(1/16"=OD, 13/16"=ID, 0.0153"=WT);
1.59MM OD x 0.813MM ID x 0.3885 WT x 600MM LG
.064" OD x .044" ID x .010" WT x 30-60" Length.
OD1.6 x W0.25 x L800(+3) mm
1.6256mm OD x 1.1456mm IDx0.23mm WT x 762mm LG (0.064"=OD, 0.045"=ID, 0.0094"=WT, 30"=LG);
1.727 mm OD x 1.270mm ID x 0.23mm WT x 762mm(.068" OD x .050" x .0090" x 30" LG)

2mm OD     x  1.0mm ID x 0.5mm WT x 508mm LG;
2mm OD     x  1.4mm ID x 0.3mm WT x 18mm LG;
2.1mm OD  x  1.6mm ID x 0.25mm WT x 500mm LG;
2.4mm OD  x  1.6mm ID x 0.4mm   WT x 508mm LG;

3.0MM OD x 2.5MM ID x 0.25MM x 2000MM LG
3.0MM OD x 1.0MM ID x 1.00MM x 2500MM LG
3mm OD x  2.0mm ID x 0.5mm WT x 1000mm LG;(0.1181"=OD, 0.0787"=ID, 0.02"=WT); 
3mm OD x  1.5mm ID x 0.74mm WT ; 
3mm OD x  1.0mm ID x 1.0mm WT x 1000mm LG; 
3.1mm OD x  2.62mm ID x 0.24mm WT (1/8" OD x .103" ID ); 
3.175mm OD x 0.50mm WTx 304.8mm Length(1/8" OD x .085" ID x .020" x 12");
3.175mm OD x 2.8702mm ID x 0.15mm WT x 508mm Length (1/8" OD x .113" ID x 20");
3.2MM OD x 2.9MM ID x 508MM LG(.125" OD x .1124" ID x 20" LG)
OD3.2(+/-0.03) x W0.4(+/-0.04) x L800(+3) mm

4 MM OD x 3MM ID x 0.5MM WT x 1000 mm LG
OD5.00mm x WT 1.00mm x Length 1000mm (0.209 kg/pc);
6.0 mm OD x 5.2 mm ID x 0.4 mm WT x 1100 mm length
OD6 x W1.0 x L900(+3) mm
OD6.35mm x WT 0.51mm x Length 1000mm (0.156 kg/pc);
OD6.35mm x WT 1.00mm x Length 1200mm (0.336 kg/pc);
OD7.00mm x WT 1.00mm x Length 1000mm (0.314 kg/pc);
7.50mm OD x .50mm Wall x 500mm LG
OD8.00mm x WT 0.25mm x Length 1000mm (0.101 kg/pc);
OD8 x W1.0 x L900(+3) mm
9.0 mm OD x 8.40 mm ID x 0.3 mm WT x 250 mm length.
OD9.00mm x WT 0.30mm x Length 500mm   (0.069 kg/pc);
OD10.0mm x WT 0.80mm x Length 1000mm (0.385 kg/pc);
OD10.0mm x WT 1.00mm x Length 1000mm (0.471 kg/pc);
OD10.0mm x WT 1.00mm x Length 1016mm (0.479 kg/pc);
Typical application:  medical grade of tantaum tube used as radiopaque markers and the surgical implants material or medical device.
Tantalum seamless tubing may be cut into tantalum cut tubing used as radiopaque marker bands and other application, tantalum marker bands are used as medical device components where radiopacity is required. e.g. tantalum capillary or tantalum cut tubing ASTM F560 (medical grade) was cut into the miniature tantalum markers(radiopaque marker), which is the suture radiopaque marker placement, tantalum myocardial markers (inner diameter 0.8 mm, outer diameter 1.3 mm, length 1.5 to 3.0 mm) were inserted beneath the left ventricular (LV) epicardial surface along 4 equally spaced longitudinal meridians for olume determination.

The implantation of tantalum as a radiopaque marker into the submucosal layer of the GI tract in a porcine model is technically feasible and safe. Long-lasting fluoroscopically visible tantalum markings could facilitate subsequent surgical and radiation therapy, in which, Gold and tantalum are mentioned as materials which are more visible under X-ray illumination than the stainless steel metal of the stent.

Tantalum tubing can be processed into tantalum ring electrodes or tantalum marker band, which is applied as a radiopaque marker.

ASTM F 560 medecal grade Tantalum, element #73, is a shiny, flexible, and highly radio-opaque metal. Though more brittle than stainless steel, tantalum exhibits high ductility and resistance to corrosion.

ASTM F 560 medecal grade Tantalum is ideal for viewing and supporting, but more biocompatible options exist.

ASTM F 560 medecal grade Tantalum is a highly radiopaque material, which is easily seen on fluoroscopy.

ASTM F 560 medecal grade tantalum exhibits excellent radiopacity and it is also Magnetic Resonance Imaging (MRI)-compatible.

The bioinertness of tantalum was reconfirmed as was its suitability for use as skeletal and soft tissue radiographic markers. 

Trade name : ta tube, ta tubing, ta tubes, ASTM F560 tantalum tube, ASTM F 560 tantalum, Tantalum tube ASTM F 560, tantalum tubing F560, tantalium tube, tantalium tubing, surgical tantalum, tantalum implant, tantalum implants, tantalum per ISO 13782 -Implants for surgery -- Metallic materials -- Unalloyed tantalum for surgical implant applications, tantalum medical devices in conformity with ISO 13485 quality management system, medical tantalum tubings, ta pipe, ta pipes, ta capillary tube, ta capillaries, ta capillary, medical grade tantalum, medical device tantalum, medical tantalum precision tube, medical tantalum precision tubing, medical tantalum micro tubes, medical tantalum micro tubing, medical grade tantalum capillary tube, etc.,  

Standard Specification for Unalloyed Tantalum for Surgical Implant Applications (ASTM F 560 - 05 UNS R05200, ASTM F 560 - 05 UNS R05400).  This specification is under the jurisdiction of ASTM committee F04 on Medical and Surgical Materials and Devices (orthopaedic medical devices) and is the direct responsibility of Subcommittee F04.12 on Metallurgical Materials.

This Specification covers the chemical requirements, mechanical properties, and metallurgical requirements for unalloyed tantalum wire, unalloyed tantalum rod, unalloyed tantalum tube, unalloyed tantalum ribbon, unalloyed tantalum strip, unalloyed tantalum foil, unalloyed tantalum sheet, unalloyed tantalum plate, etc., used in the manufacture of surgical implants.

Referenced Standards :
ASTM B 364 Specification for Tantalum and Tantalum Alloy Ingots;
ASTM B 365 Specification for Tantalum rod + Tantalum Alloy Rod + Tantalum Wire + Tantalum Alloy Wire; 
ASTM B 708 Specification for Tantalum Ribbon, Tantalum Alloy Ribbon, Tantalum Strip, Tantalum Alloy Strip, Tantalum Foil, Tantalum Alloy Foil, Tantalum Sheet, Tantalum Alloy Sheet, Tantalum Plate, Tantalum Alloy Plate;
ASTM E 8 Test Methods for Tension Testing of Metallic Materials;
ASTM E 29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications;
ASTM F 981 Practice for Assessment of Compatibility of Biomaterials for Surgical Implants with Respect to Effect of Materials on Muscle and Bone;
ASQ C1 Specification of General Requirements for a Quality Program;
ISO 6892 Metallic Materials Tensile Testing at Ambient Temperature;
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Standard Specification ASTM B 521 -98 for Tantalum Tube + Tantalum Alloy Tube Seamless and Welded.

This specification covers tantalum and tantalum alloy seamless and welded tubes of the following grades:
1. ASTM B 521 -98 UNS R05200, unalloyed tantalum, vacuum melt;
2. ASTM B 521 -98 UNS R05200, unalloyed tantalum, powder-metallugry consolidation;
3. ASTM B 521 -98 UNS R05255, tantalum alloy, 90% tantalum 10% tungsten alloy, vacuum melted;
4. ASTM B 521 -98 UNS R05252, tantalum alloy, 97.5% tantalum 2.5% tungsten alloy, vacuum melted;
5. ASTM B 521 -98 UNS R05240, tantalum alloy, 60% tantalum 40% columbium, electron-beam furnace or vacuum-arc melt, or both.