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Welcome To Natural Steels

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  • 29, Radha Krishna Temple Bldg., 1st Floor, Office No. 10, 4th Kumbharwada Lane, Mumbai - 400 004.
  • +91 22 6651 8616 / 6659 5953
  • sales@naturalsteels.com
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We at Citizen Metals put in a lot of efforts to devise sustainable high-quality products that are usable in different environments. We manufacture these products using top-notch raw materials and hence ensure their reliability and durability. Our Tantalum Sheets are hard, ductile and highly corrosion resistant products. These Tantalum Sheets are resistant to a lot many chemicals. Our Sheets made from Tantalum have a high melting point and can be formed into extremely thin protective oxide layers on high-quality capacitors. Our Tantalum Sheets are used in many industries such as laboratory equipments, super-alloy additives in nickel-alloys, substitutes for platinum and more. These Tantalum Sheets are used in applications where anti-corrosive properties are needed. Also, these sheets find usage in chemical processing and military applications.

Tantalum is often supplied in flat sheets. We suggest that you order to specific widths and lengths that limit the amount of waste in your application. Natural Steels can cut to precise dimensions with very tight tolerances. Rather than ordering big sheets and cutting the material yourself, let Natural Steels do the cutting for you and reduce your risk and scrap.

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All tantalum sheet is not the same. Even material ordered to typical ASTM specifications could perform differently depending on how you use it. That’s why it is important to let Natural Steels know how the tantalum sheet will be used. Through the years, Natural Steels has developed unique manufacturing processes for each application. By adjusting our production processes, we can control mechanical properties, grain size, texture and chemistry of the final products.There are many diverse applications for tantalum. Some utilize the corrosion resistance, some the density, and others the high melting point.In heat exchangers, tanks, and vessels that are used with corrosive chemicals and acids, our tantalum resists attacks and allows customer to keep their plants running without unnecessary maintenance and shut downs.

SWe recommend our Tantalum 2.5% Tungsten alloy for such applications.Our sheets are used in numerous applications as magnetic or radiation shielding. Such applications range from military satellites to cutting edge medical technologies. Depending on the shielding’s environment the tantalum will likely be pure or either alloyed with 2.5 or 10 percent tungsten.

Some applications require the stamping of shapes or cups from tantalum sheets. Natural Steels can engineer the material to perform ideally in such applications. By managing the rolling directions, reduction rates, and the number and temperature of intermediate annealing steps, we engineer the metal to fit the job.

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Tantalum is commonly used in high temperature vacuum furnaces. In many instances, it not only is used as shielding or to support structures, but it is often the heating element itself. Depending on the size and shape of the material, Natural Steels can provide various types of grain stabilized tantalum to improve the materials life in the furnaces.

Tantalum Sheet Specification :

  Thickness (mm) Width (mm) Length (mm)
Foil 0.03-0.07 30-200 >50
Sheet 0.07-0.5 30- 700 30-2000
Board 0.5-10 50-1000 50-3000
Purity >=99.95% or 99.99%

Chemical Composition :

Element R05200 (%,Max) R05400 (%,Max)
C 0.01 0.01
O 0.015 0.03
N 0.01 0.01
H 0.0015 0.0015
Fe 0.01 0.01
Mo 0.02 0.02
Nb 0.1 0.1
Ni 0.01 0.01
Si 0.005 0.005
Ti 0.01 0.01
W 0.05 0.05

Mechanical requirements (annealed condition)

Grade and size Annealed
Tensile strength min, psi (MPa) Yield strength min,psi (MPa)(2%) Elongation min, % (1 inch gage length)
Sheet, foil. and board (RO5200, RO5400) Thickness<0.060"(1.524mm) Thickness≥0.060"(1.524mm) 30000 (207) 20000 (138) 20
25000 (172) 15000 (103) 30
Ta-10W (RO5255) Sheet, foil. and board 70000 (482) 60000 (414) 15
70000 (482) 55000 (379) 20
Ta-2.5W(RO5252) Thickness<0.125" (3.175mm) Thickness≥0.125" (3.175mm) 40000 (276) 30000 (207) 20
40000 (276) 22000 (152) 25
Ta-40Nb (RO5240) Thickness<0.060"(1.524mm) 40000 (276) 20000 (138) 25
Thickness>0.060"(1.524mm) 35000 (241) 15000 (103) 25

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