Purity :  99.98%min
Specs : according to ASTM B708 -98 R05200 and ASTM F560 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
Dimensions: 0.025 mm x up to 5 mm x R/L
Typical size:   0.023mm x 0.40mm x R/L on spool;
                     0.025mm x 0.76mm x R/L on spool;
                     0.03 mm x 0.76 mm x 300 meters
                     (theoretical weight: 112gram/300meter);
                     0.049mm x 1.0mm x R/L on spool;
                     0.001" x .03" x R/L on spool;
Packing : wire roll in spool with vacuum container.

Trade names : tantalum foil, tantalum film, tantalum strip, tantalum sheet, tantalum band, tantalum tape, tantalum fillet, tantalum foil in strip.