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Baoji Towin Rare Metals Co.,Ltd
Home ProductsNiobium Rod

Specification Optional Nb Wire Greaseless Excellent Properties Performance

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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Specification Optional Nb Wire Greaseless Excellent Properties Performance

Specification Optional Nb Wire Greaseless Excellent Properties Performance
Specification Optional Nb Wire Greaseless Excellent Properties Performance

Large Image :  Specification Optional Nb Wire Greaseless Excellent Properties Performance

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: 99.95%(3N5)-99.99%(4N) Boiling Point: 4742 ℃
Melting Point: 2468 ℃ Density: 8.57 G/cm3
Delivery Time: 2-3weeks Surface: Polished
Appearance: Silvery Material: Niobium
Niobium Wire Specification: Φ1mm;Φ2.0mm;Φ3.0mm Other Specification: Upon Request
High Light:

niobium wire


nb wire

99.9% (3N) - 99.95% (3N5) Purity Niobium Rod , ASTM B392-99 , Niobium Wires , Coiled Wire



Application: To manufacture niobium mechanical parts, electric materials, high voltage sodiumlamp and Jewelry; widely applied for pharmacy, semiconductor, aviation and aerospace, nuclear, high temperature assemblies and other fields.


Purity: 99.9%(3N)-99.95%(3N5)

Manufacturing Standard: ASTM B392-99

Surface: should be smooth, clean, greaseless, without fissure or burr, no mess around, no knotting, no crossover, no continuous pitches or scratches,




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 wires 0.020in(0.508mm)-0.124in(3.14mm)

Ultimate Tensile Strength (MPa) 125
Yield strength (MPa, 2% offeset) /
Elongation(%, 1-in gage length) 20


Dimension 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)





Niobium wire is drawing and 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.



We produce R04200, R04210 bars, rods and wires which meet ASTM B 392-99 standard and the sizes can be customized as per your required dimensions. We will do our best to fulfill customers' needs and markets' demands by providing a great variety of customized products. Taking advantages of our high quality niobium oxide raw material, advanced equipment, innovative technology, professional team, we tailored your required products. You may tell us all your requirements and we dedicated in manufacturing upon your needs.


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.



Our Strength


  • More than 20 years’ experience in tantalum /niobium and its alloy smelting and deep processing
  • Stable raw material supply from Chinese biggest tantalum/niobium hydrometallurgy smelter
  • Only buy raw materials from ethically trustworthy source is officially confirmed by EICC certificate
  • Guarantee higher quality with lowest price
  • Passed ISO 9001 (2015)
  • Full and strict quality control system,
  • Precise, sensitive, quick results Inspection instruments
  • Advanced technology, Advanced equipment, Modern management
  • OEM services


  • Within fiberboard wooden case or box
  •  As per request of the client


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

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