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Material: Tantalum tubing, Tantalum tube (seamless), Tantalum pipe, Ta tube, Ta tubing
Specs : according to ASTM B521-98 R05200.
Temper : As Drawn, Annealed.
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
            Ta balance (typically 99.92%)
Physical & Mechanical property :
            Tensile strength 207 MPa min.
            Yield strength    138 MPa min. 
            Elongation         25%min.
Size available : 
0.07875" to 3 1/2" Outer Diameter  x 0.01" to 0.20" Wall thickness x length up to 19.685 ft
2.0mm up to 88.9 mm Outer Diameter x 0.25mm up to 5mm  Wall Thickness x Length up to 6 meters max. 

3 1/2" to 5.90" Outer Diameter  x 0.04" to 0.20" Wall thickness x length up to 19.685 ft
88.9mm up to 150 mm Outer Diameter x  1 mm up to 5mm  Wall Thickness x Length up to 6 meters max. 
Typical Size :
(OD=Outside Diameter or Outer Diameter, ID=Inside Diameter or Inner Diameter, WT=Wall Thickness, LG=Length) 
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 (0.0024 kg/pc);
1.50mm OD x 0.5mm ID x 0.50mm WT x 150mm LG (0.003 kg/pc);
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) (0.0285 kg/pc);
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.
1.6mm OD x 1.1mm ID x 0.25mm Wall x 800(+3/-0) mm Length
1.6256mm OD x 1.1456mm IDx0.23mm WT x 762mm LG (0.064"=OD, 0.045"=ID, 0.0094"=WT, 30"=LG) (0.0129 kg/pc)
1.727  mm OD x 1.267mm ID x 0.23mm WT x 762mm LG ( 0.0137 kg/pc) ;

2mm OD     x  1.0mm ID x 0.5mm WT x 508mm LG (0.0198 kg/pc);
2mm OD     x  1.4mm ID x 0.3mm WT x 18mm LG (0.0004 kg/pc);
2.1mm OD  x  1.6mm ID x 0.25mm WT x 500mm LG (0.012 kg/pc);
2.4mm OD  x  1.6mm ID x 0.4mm   WT x 508mm LG (0.021 kg/pc);
3mm OD x  2.0mm ID x 0.5mm WT x 1000mm LG;(0.1181"=OD, 0.0787"=ID, 0.02"=WT) (0.065 kg/pc);
3mm OD x  1.5mm ID x 0.74mm WT (0.087 kg/Meter);
3mm OD x  1.0mm ID x 1.0mm WT x 1000mm LG ( 0.105 kg/pc) ;
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

3.1mm OD x  2.62mm ID x 0.24mm WT (1/8" OD x .103" ID 0.036 kg/pc);
3.175mm ODx 0.50mm WTx 304.8mm Length( 0.0213 kg/pc);
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)
3.2mm OD x 2.4mm ID x 0.4(+/-0.04)mm Wall x 800(+3)mm LG
4mm OD x  3.0mm ID x 0.5mm WT x 1000mm LG( 0.092 kg/pc);
4mm OD x  2.0mm ID x 1.0mm WT x 1000mm LG( 0.157 kg/pc);
4.749mm OD x 0.50mm WTx 304.8mm Length(0.1869"=OD, 0.02"=WT, LG=12") ( 0.111 kg/pc);
5mm OD x  4.4mm ID x 0.3mm WT (0.1969"=OD, 0.0118"=WT) ( 0.074 kg/meter);
5mm OD x  4.0mm ID x 0.5mm WT ( 0.118 kg/meter);
5mm OD x  3.6mm ID x 0.7mm WT (0.157 kg/meter);
5mm OD x  3.0mm ID x 1.0mm WT x 1000mm LG ( 0.209 kg/pc);
6mm OD x  5.2mm ID x 0.4mm WT x 1100mm LG( 0.129 kg/pc);
6mm OD x  4.0mm ID x 1.0mm WT x 1000mm LG( 0.262 kg/pc);
6.35mm OD x 5.588mm ID x 0.381mm WT (1/4"=OD, 0.22"=ID, 0.015"=WT) ( 0.119 kg/meter);
6.35mm OD x 5.55mm ID x 0.4mm WT x 1000mm LG; (1/4"=OD, 0.2185"=ID) ( 0.124 kg/pc);
6.35mm OD x 5.33mm ID x 0.51mm WT x 1000mm LG;(1/4"=OD, 0.02"=WT) ( 0.156 kg/pc);
6.35mm OD x 4.4mm ID x 1.0mm WT x 1200mm LG;(1/4"=OD) ( 0.329 kg/pc);
6.35mm OD x 4.35mm ID x 1.0mm WT x 1200mm LG;(1/4"=OD) ( 0.336 kg/pc);

7mm OD x 6.5mm ID x 0.25mm WT ( 0.088 kg/meter) ;
7.50mm OD x .50mm Wall x 500mm LG
7mm OD x 5.0mm ID x 1.0mm WT x 1000mm LG ( 0.314 kg/pc);
7.5mm OD x 4.875mm ID x 1.0625mm WT x 1000mm LG ( 0.358 kg/pc);
7.62mm OD x 0.51mm WT x 431.80mm LG;(0.3"=OD, 0.02"=WT, 17"=LG) ( 0.082 kg/pc);
8.00mm OD x WT 0.25mm x Length 1000mm (0.101 kg/pc);
8mm OD x 5.0mm ID x 1.5mm WT x 600mm LG(0.315"=OD, 0.1969"=ID) ( 0.306 kg/pc);
8mm OD x 6.0mm ID x 1.0mm WT x 1000mm LG(0.315"=OD, 0.2362"=WT) ( 0.366 kg/pc);
8mm OD x 0.3-0.4mm WTx 1000mm Length(0.315"=OD) ( 0.121 - 0.159 kg/pc);
8mm OD x 0.25mm WTx 1000mm Length ( 0.101 kg/pc) ;

8.70mm OD x 8.20mm ID x 0.25mm WT (11/32"=OD) ( 0.110 kg/meter);
8.80mm OD x 8.00mm ID x 0.4mm WT x 3000mm LG ( 0.581 kg/pc)
9mm OD x 8.40mm ID x 0.3mm WT x 250mm LG(.3543"=OD) ( 0.034 kg/pc);
9mm OD x 6.375mm ID x 1.3125mm WT x 1000mm LG(.3543"=OD) ( 0.528 kg/pc);
9.5mm OD x 8.5mm ID x 0.5mm WT (3/8"=OD) ( 0.235 kg/meter);
9.53mm OD x 0.9mm WT x 200mm LG (3/8"=OD) ( 0.0812 kg/pc);

10mm OD x 9mm ID x 0.50mm WTx 1100mm Length(.3937"=OD) ( 0.273 kg/pc);
10mm OD x 8.4mm ID x0.80mm WTx 1000mm Length(.3937"=OD) ( 0.385 kg/pc);
10mm OD x 8.0mm ID x1.00mm WTx 800mm Length(.3937"=OD) ( 0.3768 kg/pc);
10mm OD x 1.00mm WTx 1016mm Length(.3937"=OD) ( 0.4785 kg/pc);
10mm OD x 6.0mm ID x 2.00mm WTx 600mm Length(.3937"=OD) ( 0.502 kg/pc);

12mm OD x 11.24mm ID x 0.38mm WTx 1100mm Length(.4724"=OD) ( 0.254 kg/pc);
12mm OD x 10mm ID x 0.5mm WTx 150mm Length ( 0.045 kg/pc);
12mm OD x 10.5mm ID x 0.75mm WTx 150mm Length ( 0.066 kg/pc);
12mm OD x 10mm ID x 1.0mm WTx 1000mm Length ( 0.575 kg/pc);
12mm OD x 2.0mm WTx 1000mm Length ( 1.046 kg/pc);

12.7mm OD x 11.7mm ID x 0.5mm WT(1/2"=OD, 0.02"=WT) ( 0.319 kg/meter);
12.7mm OD x 11.68mm ID x 0.51mm WTx 1828mm LG(1/2"=OD, 0.46"=ID, 0.02"=WT, 6ft=LG)  ( 0.594 kg/pc) ;
12.7mm OD x 0.7938mm WTx 3048mm LG(1/2"=OD, 1/32"=WT, 10ft=LG) ( 1.506 kg/pc);
12.7mm OD x 10.7mm ID x1.00mm WTx 1016mm Length(1/2"=OD, 40"=LG) ( 0.622 kg/pc);
12.7mm OD x 10.3mm ID x1.20mm WTx 1000mm Length(1/2"=OD, 39.37"=LG) ( 0.722 kg/pc);

13mm OD x 0.40mm WTx 1000mm Length( 0.264 kg/pc);
14mm OD x 0.40mm WTx 600mm Length( 0.171 kg/pc);
14mm OD x 13mm ID x 0.50mm WTx 2000mm Length( 0.706 kg/pc);
14mm OD x 0.50mm WTx 2500mm Length( 0.883 kg/pc);
14mm OD x 13mm ID x 0.50mm WTx 6000mm Length (2.118 kg/pc);
14mm OD x 10mm ID x 2.00mm WTx 2300mm Length (2.887 kg/pc);
14mm OD x 10mm ID x 2.00mm WTx 3000mm Length (3.765 kg/pc);
14mm OD x 2.5mm WT (1.504 kg/meter);

15mm OD x 14.20mm ID x 0.4mm WTx 1000mm Length (0.305 kg/pc);
15mm OD x 0.50mm WTx 200mm Length (0.076 kg/pc);
15.9mm OD x 0.50mm WTx 145mm Length(0.058 kg/pc);
16mm OD x 0.40mm WTx 1600mm Length(0.522 kg/pc);
16mm OD x 0.50mm WTx 3000mm Length(1.215 kg/pc);
17mm OD x 1.00mm WTx 400mm Length(0.335 kg/pc);
18mm OD x 16mm ID x1.00mm WTx 1100mm Length(0.978 kg/pc);
18mm OD x 15mm ID x1.50mm WTx 105mm Length(0.136 kg/pc);
18mm OD x 13mm ID x2.50mm WTx 105mm Length(0.213 kg/pc);

19.0mm OD x 17mm ID x 1.00mm WTx 1100mm Length (1.036 kg/pc);
19.05mm OD x 0.381mm WT (3/4"=OD, 0.015"=WT) (0.372 kg/meter);
19.05mm OD x 0.50mm WT x 3000mm LG (3/4"=OD, 0.02"=WT)  (1.455 kg/pc) ;
19.05mm OD x 0.60mm WT x 3010mm LG (3/4"=OD) (1.743 kg/pc);
19.05mm OD x 16.56mm ID x 1.24mm WT(3/4"=OD, 0.049"=WT) (1.155 kg/meter);
19.05mm OD x 1.65mm WT x 900mm LG (3/4"=OD) (1.352 kg/pc);
19.5mm OD x 18.7mm ID x 0.4mm WT x 1879mm LG (0.752 kg/pc);
OD 3/4" x WT 0.015" x total 1 m long
OD 3/4" x WT 0.02" x total 1 m long
19.05 mm OD x 0.5 mm Wall x 3000 mm long
19.05MM (±0.102) OD X 0.406MM(±0.0406) WT X 4300MM (+3.2/-0) LG  
19.05MM(±0.102) OD X 0.406MM(±0.0406) WT X 7315MM (+3.2/-0) LG for tantalum heat exchanger
OD 19.05 X 0.9 Thk X 3000 Long
19.05mm OD x 16.55mm ID x 1.25 mm Thick x 2000mm

20mm OD x 0.9mm WTx 1000mm Length(0.899 kg/pc);
21.3mm OD x 17.3mm ID x 2mm WT x 2000mm LG (4.038 kg/pc);
24mm OD x 1mm WTx 1100mm Length (1.323 kg/pc);
25mm OD x 2mm WTx 1000mm Length (2.406 kg/pc);
25mm OD x 2mm WTx 6000mm Length (14.436 kg/pc);
25.4mm OD x 24.6mm ID x 0.4mm WTx 3260mm Length(1"=OD) (1.705 kg/pc);
25.4mm OD x 24.3mm ID x 0.55mm WT(1"=OD) (0.715 kg/meter);
25.5mm OD x 24.7mm ID x 0.4mm WT x 1000mm LG (1"=OD) (0.523 kg/pc);
25.4mm OD 24.4mm ID x 0.5 mm Wall X 3500 mm
OD 1" x WT 0.55 mm x 1000mm long
26.4mm OD x 0.5mm WTx 1000mm Length (0.677 kg/pc);

30mm OD x 20mm ID x 5mm WT x 2600mm LG (16.998 kg/pc);
31.75mm OD x 0.381mm WT x 6000mm LG (1-1/4"=OD, 0.015"=WT) (3.75 kg/pc);
32mm OD x 0.4mm WT x 5120mm LG (3.384 kg/pc);
32mm OD x 0.7mm WT x 6000mm LG (6.876 kg/pc);
OD33.7(+/-0.13) x WT2.0(+/-10%) x L2700(+3) mm
33.7mm OD x 2mm WT x 6000mm LG (20.74 kg/pc);
35.0mm OD x 2mm WT x 6000mm LG (19.896 kg/pc);

38mm OD x 2.5mm WT x 200mm LG (0.928 kg/pc) ;
38mm OD x 1.30mm WTx 2500mm Length (6.24 kg/pc);
38.10mm OD x 0.6096mm WT x 2438.4mm LG(1-1/2"=OD, 0.024"=WT, 96"=LG) (2.914 kg/pc);

OD42.2(+/-0.15) x WT2,0(+/-10%) x L3200(+3) mm
60.3MM OD x 56.30MM ID x 2MM WTX 914.40MM LG
60MM OD x 54MM ID x 3MM WTX 6000MM LG =53.73 kg/pc
120 mm OD x 1.6mm Wall x 1016mm Length ( 10.10 kg/pc)

Typical application: Tantalum tubing is mainly used to make tantalum reaction vessel, tantalum heat exchangers(shell & tube heat exchanger), tantalum pipe line(piping or channel), tantalum condenser, tantalum agitator, tantalum cooler, tantalum boiler, tantalum bayonet heater, tantalum spiral (helical) coil, U-tube heat exchanger or "U" tube bundle heat exchanger in the chemical industry for condensing, re-boiling, preheating and cooling of nitric acid, sulfuric acid, hydrochloric acid, bromic acid and combinations of these acids with many other chemicals.  

Tantalum tube is also used in  liquid metal tanks and other glass-lined containers, tantalum thermocouple and tantalum thermocouple protection sheath, tantalum thermowell, tantalum emitter, tantalum sleeve, tantalum plasma spray target and tantalum tubular sputtering target, tantalum tubes are often used as tantalum cathode with Hollow Cathode Discharge (HCD). For example, the hollow cathode is the base of the plasma contactor research, tantalum tube is used as the hollow cathode, for example, the device consists of a tantalum tube electron beam welded to a thoriated tungsten orifice plate; Located within the hollow cathode is a thin rolled tantalum foil insert which is electrically connected to the cathode tube(for a flight design tantalum foil insert should be replaced by a hollow porous tungsten plug); Wrapped around the cathode tube is heater wire, the heater is composed of a resistive wire filament insulated from the tantalum casing; A radiation shield of tantalum foil is wrapped around the heater wire; Several millmeters downstream of the cathode is a disc anode (called a "keeper" by those familliar with hollow cathode technology) used to initiate and sustain hollow cathode operation...... 

Trade name: tantalum tube, tantalum tubes, tantalum tubing, tantalum tubings, tantalium tube, tantalium tubes, tantal tube, tantal tubes, tantal pipe, tantal pipes, tantal tubing, tantal tubings, tantalum ampoule, tantalum ampule, tantalum sheath, tantalum sleeve, tantalum shell, tantalum protect tubing, ta tube, ta tubing, tantalum heat exchanger system tube, tantalum hollow bar, tantalum hollow bars, tantalum hollow cylinder, tantalum hollow cylinders, etc.,

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.