Material :Tantalum foil, tantalum diaphragm seal, tantalum gasket, tantalum disc
Specs : according to ASTM B708 - 98 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
            Ti         0.0100 %max
            Mo       0.0200 %max
            W        0.0500 %max
            Nb       0.1000 %max
Physical & Mechanical property :
            Tensile strength 207 MPa min.
            Yield strength 138 MPa min.
            Elongation 25%min
Size available :
Thick 0.025mm up to 0.09mm x Width up to 150mm max. x Random Length
Also we can tailor to customer according to ASTM F 560 surgical implant grade of tantalum foil.
Typical size :
.002" (0.0508mm) thick  with 3N5
.003" (0.0762mm) thick  with 3N5
.004" (0.1016mm) thick  with 3N5
.005"  (0.127mm) thick with 3N5
.006" (0.1524mm) thick with 3N5
.007" (0.1778mm) thick with 3N5
.008" (0.2032mm) thick with 3N5
.009" (0.2286mm) thick with 3N5 
0.05mm thickness X 50mm width X 500mm length;
0.05mm thickness x  120mm width x 600mm length;
0.07mm thickness x 175mm width x 400mm length;
0.1mm thick x 60mm wide x 330mm long;
0.1 mm thick(+/-0.02) x 75mm(+/-0.5) width x 300mm(+/-0.5) width Length;

Typical application :tantalum foil(tantalum film, tantalum diaphragm, tantalum gasket) have the perfect resistance to the corrosive effects of the medium such as hydrogen fluoride, hydrochloric acid, chlorine, hydrogen chloride, other inorganic chlorine-based acids and majority of their salts, sulfuric acid, sulfurous acid, nitric acid and phosphoric acid as well as some of their salts, calcium hydroxide, phenol, ethylene glycol, acetic acid, benzoic acid, lactic acid, butyric acid, citric acid, oxalic acid, levulinic acid and many other chemicals, etc.,
0.1mm x 100mm x 100mm;
0.1mm thickness x 175mm width x 400mm length;
0.1mm thickness x 300mm width x 1000mm length;
0.1 mm thick x 350 mm width x 1200 mm(L);
0.125mm x 150mm x 150mm;

0.15mm thick x 120mm wide x 1000mm long;
0.15mm thick x 150mm wide x 500mm long;
0.18mm thick x 63mm width x 1100mm long;
0.2mm thick x 7.50mm wide x 36mm long;
0.2mm x 55mm x 200mm;
0.2mm thick x 60mm wide x 330mm long;
0.2 mm thick(+/-0.02) x 75mm(+/-0.5) width x 300mm(+/-0.5) width Length;
0.20mm thick x 300mm wide x 1000mm long;
0.20mm thick x 100mm wide x 200mm long;
0.25mm thickness x 300mm width x 1000mm length;

0.4mm x 30mm x 300mm;
0.5mm thick x 100 mm width x 100 mm length;
0.5mm thickness x 300mm width x 1000mm length;
0.8mm x 30mm x 400mm;
0.9 mm thick x 100 mm width x 100 mm length;

Trade name : tantalum plate,tantalum sheet, tantalum foil,  tantalum strip, tantalum band, tantalum ribbon, tantalum plates, tantalum sheets, tantalum foils, tantalum strips, tantalum bands, tantalum ribbons, tantalum alloy plate, tantalum alloy sheet, tantalum alloy foil, tantalum alloy strip, tantalum alloy band, tantalum alloy ribbon, tantalum alloy plates, tantalum alloy sheets, tantalum alloy foils, tantalum alloy strips, tantalum alloy bands, tantalum alloy ribbons, tantalum film, tantalum thin film, tantalum gasket, tantalum gaskets, tantalum clad, tantalum cladding, tantalum liner, tantalum shield, tantalum diaphragm seal, tantalum round disc, tantalum disc, tantalum layer, tantalum layers, tantalum shield screen, tantalum heat shield,  tantalum heating elements, tantalum heating element, tantalum heat shields, Ta-heat shields, tantalum chip, tantalum chips, tantalum membrane, tantalum membranes, 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.