Specs : according to ASTM B365 -98 R05400, R05200.
Chemical composition :
            O                 0.0300 %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 172 MPa min.
            Yield strength    103 MPa min.
            Elongation         25%min
Size available :
Diameter 1.50 up to 150mm x Length 1500mm max.

Typical Size :
1.5mm diameter x 1000mm long (0.0591" x 39.37"), theoretical weight=0.029 kg/pc;
2.0mm diameter x 1000mm long (0.0787" x 39.37"), theoretical weight=0.052 kg/pc;
3.0mm diameter x 1000mm long (0.1181" x 39.37"), theoretical weight=0.118 kg/pc;
4.0mm Diameter x 508mm Length(0.1575" x 20"),     average weight=0.1122 kg/pc; 
5.0mm Diameter x 60mm Length(0.1969" x 2.3622"), theoretical weight=0.0196 kg/pc;
5.0mm Diameter x 250mm Length (0.1969" x 9.8425"), theoretical weight=0.082 kg/pc;
5.0mm Diameter x 1000mm Length (0.1969" x 39.37"), theoretical weight=0.327 kg/pc;

6.0mm Diameter x 101mm Length (0.2362" x 4"),      theoretical weight=0.0476 kg/pc;
6.0mm Diameter x 300mm Length (0.2362" x 11.811"), theoretical weight=0.1413 kg/pc;
6.0mm Diameter x 1000mm Length (0.2362" x 39.37"), theoretical weight=0.471 kg/pc;
6.35mm Diameter x 300mm Length  (1/4" x 11.811"),  theoretical weight=0.1581 kg/pc; 
6.35mm Diameter x 508mm Length  (1/4" x 20"),        theoretical weight=0.2677 kg/pc; 
6.35mm Diameter x 635mm Length  (1/4" x 25"),        theoretical weight=0.3346 kg/pc;   
6.35mm Diameter x 914.4mm Length  (1/4" x 36"),     theoretical weight=0.4819 kg/pc;   
6.35mm Diameter x 1016mm Length  (1/4" x 40"),      theoretical weight=0.5354 kg/pc;

8.0mm Diameter x 60mm Length (0.315" x 2.3622"),   theoretical weight=0.0502 kg/pc;
8.0mm Diameter x 1000mm Length (0.315" x 39.37"), theoretical weight=0.837 kg/pc;
9.0mm Diameter x 1000mm Length (0.3543" x 39.37"),theoretical weight=1.059 kg/pc;
9.525mm Diameter x 200mm Length (3/8" x 7.874"),   theoretical weight=0.2372 kg/pc;
9.525mm diameter x 304.8mm long (5/8" x 1 ft),        theoretical weight=0.3615 kg/pc;
9.525mm Diameter x 558.80mm Length (3/8" x 22"),   theoretical weight=0.6627 kg/pc;
9.525mm Diameter x 609.60mm Length (3/8" x 24"),   theoretical weight=0.7230 kg/pc;
9.525mm Diameter x 711.20mm Length (3/8" x 28"),   theoretical weight=0.8435 kg/pc;
9.525mm Diameter x 1016mm Length (3/8" x 60"),      theoretical weight=1.205 kg/pc;
9.525mm Diameter x 1828.8mm Length (3/8" x 6feet), theoretical weight=2.169 kg/pc;
9.53mm Diameter x 1500mm long,                             theoretical weight=1.782 kg/pc;

10mm diameter x 30 mm long (0.3937" x 1.1811"),     theoretical weight=0.0392 kg/pc;
10mm diameter x 100mm length(0.3937" x 3.937"),    theoretical weight=0.1308 kg/pc;
10mm diameter x 150mm length(0.3937" x 5.9055"),  theoretical weight=0.1962 kg/pc;
10mm diameter x 300mm length(0.3937" x 11.811"),  theoretical weight=0.3924 kg/pc; 
10mm Diameter x 1000mm Length (0.3937" x 39.37"),theoretical weight=1.308 kg/pc;
11mm diameter x 1000mm long (0.4331" x 39.37"),    theoretical weight=1.582 kg/pc;
11.3mm diameter x 50mm long,                                theoretical weight=0.0835 kg/pc;
0.5-1 inches diameter by 1-2 feet long

12mm diameter x 150mm length(0.4724" x 5.9055"),  theoretical weight=0.2825 kg/pc;
12mm diameter x 1000mm length,                            theoretical weight=1.883 kg/pc;
12.7mm diameter x 100mm long(1/2" x 3.937"),        theoretical weight=0.2109 kg/pc;
12.7mm diameter x 1000mm long(1/2" x 39.37"),      theoretical weight=2.109 kg/pc;
13mm diameter x 1000mm long (0.5118" x 39.37"),   theoretical weight=2.21 kg/pc;
14 mm diameter x 500 mm length,                           theoretical weight=1.2815 kg/pc;
15 mm diameter x 100 mm length,                           theoretical weight=0.2942 kg/pc;
15 mm diameter x 500 mm length,                           theoretical weight=1.471 kg/pc;
15 mm diameter x 1000 mm length,                         theoretical weight=2.942 kg/pc;

16mm diameter x 200mm Long,                               theoretical weight=0.6696 kg/pc;
16mm diameter x 300mm Long (0.6299" x 11.811"),  theoretical weight= 1.0044 kg/pc;
16mm diameter x 1000mm Long (0.6299" x 11.811"),theoretical weight=3.348 kg/pc;
18mm diameter X 1800mm long,                             theoretical weight=7.6266 kg/pc; 
20mm diameter x 300mm long,                               theoretical weight=1.5693 kg/pc;
20mm diameter x 625mm long,                               theoretical weight=3.2693 kg/pc;
20mm diameter x 1000mm long,                             theoretical weight=5.231 kg/pc;

22.5mm diameter x 100mm long,                            theoretical weight=0.662 kg/pc;
23 mm diameter x 1000 mm Long,                          theoretical weight=6.918 kg/pc;
25mm diameter x 50mm length,                              theoretical weight=0.4087 kg/pc;
25mm diameter x 300mm length,                            theoretical weight=2.4519 kg/pc;
25mm diameter x 600mm length,                            theoretical weight=4.9038 kg/pc;
25mm diameter x 1000mm length,                          theoretical weight=8.173 kg/pc;
25.4mm diameter x 1000mm long(1" x 39.37"),        theoretical weight=8.437 kg/pc;
 
30mm Diameter x 150mmmm length,                      theoretical weight=1.7654 kg/pc;
32mm diameter x 625mm long,                              theoretical weight=7.3556 kg/pc;
32mm diameter x 1000mm long,                            theoretical weight=13.391 kg/pc;
35mm diameter x 80mm length (1-3/8" x 3-1/8"),    theoretical weight=1.282 kg/pc;
35 mm Diameter x 15 mm length (1.378" x 0.5906"),theoretical weight=0.2403 kg/pc;
35mm Diameter x 300mm Long,                             theoretical weight=4.81 kg/pc;
35 mm Diameter x 400mm length (1.378" x 15.748"), theoretical weight=6.41 kg/pc;

40mm Diameter x 500mm long,                              theoretical weight=10.46 kg/pc;
45mm Diameter x 50mm long (1.7717" x 1.9685"),   theoretical weight=1.324 kg/pc;
50mm diameter x 55mm length,                             theoretical weight=1.798 kg/pc;
50mm diameter x 75mm length,                             theoretical weight=2.4519 kg/pc;
50mm diameter x 100mm  length,                          theoretical weight=3.2692 kg/pc;
50mm diameter x 150mm   length,                         theoretical weight=4.91 kg/pc;
50mm diameter x 1000mm length,                         theoretical weight=32.692 kg/pc;

50.8mm diameter x 254mm (2" x 20"),                   theoretical weight=8.58 kg/pc;
50.8mm diameter x 304.8mm (2" x 12"),                theoretical weight=10.286 kg/pc;
52mm diameter x 50 mm long,                              theoretical weight=1.768 kg/pc;
52mm diameter x 67 mm long,                              theoretical weight=2.369 kg/pc;
52 mm dia x 12 mm thick,                                     theoretical weight=0.4243 kg/pc;
55mm diameter X 100mm length,                          theoretical weight=3.956 kg/pc;

60mm Diameter x 205mm Long(2.36"x8.07"),         theoretical weight=9.65 kg/pc;
60mm Diameter x 250mm Long,                            theoretical weight=11.77 kg/pc;
62mm diameter x 1000mm length,                         theoretical weight=50.268 kg/pc;
65mm diameter x 100mm length (2.5591" x 3.937"),theoretical weight=5.525 kg/pc;
65mm diameter x 1000mm length (2.5591" x 39.37"), theoretical weight=55.25 kg/pc;
70mm Diameter x 70mm Long,                              theoretical weight=4.485 kg/pc;
70mm Diameter x 110mm Long (2.75" x 4.33"),       theoretical weight=7.048 kg/pc;

75mm diameter x 6mm thickness,                          theoretical weight=0.4413 kg/pc;
75mm diameter x 11mm length,                             theoretical weight=0.809 kg/pc;
75mm diameter x 55mm length,                             theoretical weight=4.046 kg/pc;
80mm diameter x 100mm length,                           theoretical weight=8.3692 kg/pc;
80mm diameter x 110mm length,                           theoretical weight=9.206 kg/pc;
85mm diameter x 120mm long,                              theoretical weight=11.34 kg/pc;
90mm diameter x 5mm thick,                                 theoretical weight=0.5296 kg/pc;
90mm diameter x 500mm long,                              theoretical weight=52.96 kg/pc;

100mm diameter x 100mm length,                         theoretical weight=13.077 kg/pc;
135mm diameter x 95mm long,                             theoretical weight=22.64 kg/pc;