Standard: 
As per ASTM B521-98

Purity: 
>=99.95% or 99.99 

Tantalum tube is largely applied to produce tantalum response 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 during the substance sector for condensing, re-boiling, preheating and cooling of nitric acid, sulfuric acid, hydrochloric acid, formic acid and combinations of those acids with a great deal of other chemicals.

Tantalum-10% Tungsten and Tantalum-2.5% tungsten have a higher  strength at elevated temperatures, and better corrosion resistance than pure tantalum. 

Standard: ASTM B365

Grade: RO5200, RO5400, RO5252 (Ta-2.5W), RO5255 (Ta-10W) 

Specifications: ¢ 0.25 ¢ 100mm 
Executive Standard: ASTM B365-98 
Ingredients Description: 

Manhar Metal supplies sheets and plate products in a wide range of  thicknesses and widths. We can offer flat rolled material cut to specific lengths or we can supply coiled sheet or strip shipped 0n cores. Although our products are typically produced to meet ASTM specifications, other specifications are available upon request. 
Manhar Metal offers both powder metallurgy and typical electron beam processed tantalum sheet. The powder metallurgy grade tantalum is perfect for deep drawing and stamping applications.Its provides a fine grain structure and is isotropic. Therefore parts are less likely to be pitted or have rough surfaces. 
For high temperature applications such as furnace parts . This product is engineered to significantly increase the product life by slowing grain growth at high temperature.

Tantalum Bolt & Fastener can provide custom tantalum fastener solutions for your unique  tantalum bolt, tantalum nut & tantalum screw applications. Just let us know the requirements of your tantalum fasteners and our engineering staff will help guide you to the best solution for your tantalum fastener application. 
Manhar Metal tantalum fasteners are optimized concerning chemical and mechical performance. Manhar Metal's fasteners offer the full corrosion resitance of Tantalum, but are mechanically improved due to their steel core and Tantaline's patented alloy bonding technology.Manhar Metal's tantalum fasteners offer a corrosion performance that is well beyond that of titanium or other Speciality metals like zirconium or Hastalloy.

Tantalum fasteners are also extremely stable at high temperatures, since its melting point around 3000C. Furthermore, tantalum fasteners are also one of the most bio-compatible metals around and because of is high density (16.68 g/cm3) its radio-opaque.
All tantalum fasteners are available in commercially pure tantalum, tantalum 2.5% tungsten (Ta-2.5%W) and tantalum 10% tungsten (Ta-10%W).

Physical Properties

Density 16.6 g/cc
Melting Point 3290 K, 2996°C, 5462°F
Boiling Point 5731 K, 6100°C, 9856°F
Coefficient of Thermal Expansion (20°C) 6.5 x 10(-6) / °C
Electrical Resistivity (20°C) 13.5 microhms-cm
Electrical Conductivity 13% IACS
Specific Heat .036 cal/g/°C