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Baoji Towin Rare Metals Co.,Ltd
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Superconducting Material Niobium Rod Worked Cold From Ingot To Final Diameter

China Baoji Towin Rare Metals Co.,Ltd certification
We appreciate your nice services and the perfect sputtering targets Towin supplied. We would like to enter into a long term cooperation with Towin Rare Metals.

—— Simon

Reliable factory providing excellent products and services. The specification and quality exceeds ourexpects. Very good, thanks!

—— Bruno Pascal

Very professional team and advanced equipment. Your price is beautiful and the products are perfect. The performance of niobium sheets and plates performs quite well !

—— James Daniel

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Superconducting Material Niobium Rod Worked Cold From Ingot To Final Diameter

Superconducting Material Niobium Rod Worked Cold From Ingot To Final Diameter
Superconducting Material Niobium Rod Worked Cold From Ingot To Final Diameter

Large Image :  Superconducting Material Niobium Rod Worked Cold From Ingot To Final Diameter

Product Details:
Place of Origin: CHINA
Brand Name: TOWIN
Certification: ISO9001
Model Number: RO4200,RO4210
Payment & Shipping Terms:
Minimum Order Quantity: Negotiable
Price: Negotiable
Packaging Details: Standard for Exporting
Delivery Time: 2-4 weeks
Payment Terms: T/T
Detailed Product Description
Purity: 99.9%(3N) Recrystallization: 95%min
Property: Heat-resistant, Corrosion Resistant, Good Ductility Boiling Point: 4742 ℃
Melting Point: 2468 ℃ Delivery Time: 2-3weeks
Material: Niobium Niobium Wire Specification: Φ1mm;Φ2.0mm;Φ3.0mm
High Light:

niobium bar


nb wire

99.9% (3N) Purity Niobium Rod , Niobium Rods , ASTM B392-99 , Superconducting Material




Niobium is a soft, grey, crystalline, ductile transition metal which is used in various superconducting materials. Its melting point is 2468℃ and boiling point 4742℃. It has the characteristics of high temperature resistance, high corrosion resistance and good ductility. Therefore, niobium and its alloy are widely used in electronics, iron and steel industry, chemical, jewelry, superconducting, engineering, aviation, aerospace industry etc.


Niobium rod is worked cold from ingot to final diameter. Forging, rolling, swaging, and drawing are used singularly or in combination to reach the desired size. We produce niobium bar, rod, wire which are mainly used for producing special steel, high-temperature alloy, magnetic materials and other Nb-bearing alloy. And we also produce Niobium as rod, wire, plate, sheet, tube, disc, sputtering targets, machined parts and other shapes are available by request.


Rod is normally supplied with a forged surface above 1-3/8" diameter, and a swaged or drawn finish in smaller diameters. Rod, preferably un-annealed, may be centerless ground to improve diameter tolerances. The minimum diameter for centerless grinding is .125". Rod to a maximum of 1/4" and wire may be supplied in coils or straightened and cut to length.


We are trying our best to innovate our techniques, enhance the product quality, increase the product utilization rate, lower down the costs, improve our service to supply our customers’ with higher quality products but lower purchase costs. Once you choose us, you will obtain our stable high quality products, more competitive price than other suppliers and our timely, high efficient services.


Application: Superconducting material, niobium mechanical parts, electric materials, high voltage sodiumlamp


Purity: 99.9%(3N)

Manufacturing Standard: ASTM B392-99




Metallic impurities, ppm max by weight, Balance - Niobium

Element Fe Mo Ta Ni Si W Zr Hf Ti
RO4200-1 50 100 1000 50 50 300 200 200 200
RO4210-2 100 200 3000 50 50 500 200 200 300


Non-Metallic impurities, ppm max by weight

Element C H O N
RO4200-1 100 15 150 100
RO4210-2 100 15 250 100


Mechanical properties for annealed rods 0.125in(3.13mm)-2.5in(63.5mm)

Ultimate Tensile Strength (MPa) 125
Yield strength (MPa, 2% offeset) 73
Elongation(%, 1-in gage length) 25


Dimensional Tolerance for Rods and Wires

Diameter in (mm) Tolerance in (±mm)
0.020-0.030(0.51-0.76) 0.00075(0.019)
0.030-0.060(0.76-1.52) 0.001(0.025)
0.060-0.090(1.52-2.29) 0.0015(0.038)
0.090-0.125(2.29-3.18) 0.002(0.051)
0.125-0.187(3.18-4.75) 0.003(0.076)
0.187-0.375(4.75-9.53) 0.004(0.102)
0.375-0.500(9.53-12.7) 0.005(0.127)
0500-0.625(12.7-15.9) 0.007(0.178)
0.625-0.750 (15.9-19.1) 0.008(0.203)
0.750-1.000 (19.1-25.4) 0.010(0.254)
1.000-1.500 (25.4-38.1) 0.015(0.381)
1.500-2.000 (38.1-50.8) 0.020(0.508)
2.000-2.500 (50.8-63.5) 0.030(0.762)



Why choose us?


  1. The founder of Towin Rare Metals and the key technician owns more than 20 years’ experiences in tantalum /niobium and its alloy smelting and deep processing, We are pursuing to provide our customers with the best quality products and most competitive price.
  2. We are doing our best to control a good quality and cut down our costs. For example,we have entered a long-term contract cooperation with the Chinese biggest tantalum/niobium hydrometallurgy smelter to assure our stable and high quality raw material.
  3. We have purchased the new advanced Vacuum EB furnace to product the high purity niobium ingot for further processing and we also equipped with high vacuum Annealing Furnace, plate and strip rolling mill, High precision surface grinding machine etc.
  4. The full and strict quality control system throughout the whole production line from the raw material till the products ready for delivery, we reject the unqualified products timely to make sure only qualified products can be received by our customers.



  • Shipping products by DHL or UPS or any press designated by the buyer
  • Transport by air
  • Delivery within 20-35days

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