Purity :  99.98%min
Specs : according to ASTM B708 -98 R05200 and ASTM F560 08 UNS R05200.
Chemical composition : 
            O         0.0150 %max
            C         0.0100 %max
            N         0.0100 %max
            H         0.0015 %max
            Fe       0.0100 %max
            Ni        0.0100 %max
            Si        0.0050 %max
            Mo       0.0200 %max
            W        0.0500 %max
            Nb       0.1000 %max
            Ta balance (typically 99.92%)
Physical & Mechanical property :
            Tensile strength     207 MPa min.
            Yield strength        138 MPa min. 
            Elongation             20%min
Size:     0.028mm up to 0.05mm Thickness x 0.8mm up to 2mm Width x Random Length in spool.
            0.050mm up to 0.30mm Thickness x 0.8mm up to 5mm Width x Random Length in spool.
Typical size:   0.023mm x 0.40mm x R/L in spool;
                     0.025mm x 0.76mm x R/L in spool;
                     0.03 mm x 0.76 mm x 300 meters in one spool; 
                     (theoretical weight: 112gram/300meter);
                     0.049mm x 1.0mm x R/L in spool;
                     0.001" x .030" x R/L in spool; 
                     0.10mm x 1.0mm x 50000mm in one spool;
                     0.10mm x 1.0mm x 65000mm in one spool;     
                     0.10mm x 2.0mm x 75000mm in one spool;
                     0.20mm x 1.0mm x 50,000mm in one spool;
                     0.25mm x 1.8mm x 21,000mm in one spool;
                     0.25mm x 1.8mm x 25,000mm in one spool;
                     0.25mm x 1.8mm x 29,000mm in one spool;
Packing:   tantalum ribbon in spool with plastic bag outside carton.
Application : Tantalum ribbon or tantalum bands can be cut into tantalum marker bands (tantalum cut bands), which are used as medical device components where radiopacity is required, it is the excellent radiopaque marking. Known marker bands are typically constructed of a solid band of radiopaque material, such as platinum, iridium, tungsten, tantalum, gold, etc. and alloys thereof. Typically, the marker band is slipped around and onto a shaft of the catheter and then affixed to the shaft with an adhesive, crimping, or by heating the shaft.

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. tantalum marker bands, radiopaque markers (tantalum bands), tantalum thin film, tantalum marker, tantalum markers, 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, etc.,

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: tantalum foil, tantalum film, tantalum strip, tantalum sheet, tantalum band, tantalum solid band, tantalum radiopaque material, tantalum tape, tantalum fillet, tantalum foil in strip, tantalum bands, etc.,

Standard Specification ASTM B 708 -05 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.

This specification covers unalloyed and alloyed 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 as follows:
1. ASTM B 708 -05 UNS R05200, unalloyed tantalum, electron-beam furnace or vacuum-arc melt, or both.
2. ASTM B 708 -05 UNS R05400, unalloyed tantalum, powder-metallurgy consolidation.
3. ASTM B 708 -05 UNS R05255, tantalum alloy, 90% tantalum 10% tungsten, electron-beam furnace or vacuum-arc melt, or both.
4. ASTM B 708 -05 UNS R05252, tantalum alloy, 97.5% tantalum 2.5% tungsten, electron-beam furnace or vacuum-arc melt, or both.
5. ASTM B 708 -05 UNS R05240, tantalum alloy, 60% tantalum 40% columbium, electron-beam furnace or vacuum-arc melt.
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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;