Pure Niobium Plates/Niobium Sheets: Specialized Solutions for Industrial & Laboratory Applications

Pure niobium plates/sheets of R04200 grade are sheet products manufactured from high-purity commercially pure niobium (Nb content ≥ 99.95%, compliant with ASTM R04200 and high-purity Nb1 grade) through multiple processes including vacuum melting, hot rolling, cold rolling, and annealing. Generally, products with a thickness of 1.5mm-50mm are classified as plates, while those with 0.1mm-1.5mm are sheets. They are mainly used in scenarios such as high-temperature equipment structural components, aerospace parts, chemical corrosion-resistant vessels, laboratory precision devices, and superconducting material carriers. As a core category of high-purity niobium-based materials, they possess outstanding high-temperature stability (capable of long-term stable operation below 1200℃ and short-term resistance to 1600℃), excellent corrosion resistance (strong tolerance to most acids, alkalis, molten salts, and high-temperature gases, excluding hydrofluoric acid), as well as ultra-pure impurity-free material, excellent ductility, and prominent electrical conductivity. These characteristics make them key materials in fields requiring high material purity, structural strength, and environmental resistance, especially suitable for high-precision, structural applications under extreme working conditions.

Product specification

Product Parameters

Product Information

Item	Regular Specifications (Pure Niobium Sheets)	Regular Specifications (Pure Niobium Plates)	Customization Range
Thickness	0.1mm—1.5mm	1.5mm—20mm	0.1mm—50mm, customizable per customer requirements
Width	10mm—500mm	50mm—500mm	5mm—1000mm and above, customizable per customer requirements
Length	1000mm—6000mm (single sheet); 50m—1000m (coiled sheet)	1000mm—8000mm (single sheet)	Customizable on demand (both single sheets and coiled sheets available)
Tolerance Range	Thickness tolerance: ±0.005mm—±0.02mm; Width tolerance: ±0.1mm—±1.0mm (compliant with ASTM B393 standard)	Thickness tolerance: ±0.02mm—±0.1mm; Width tolerance: ±0.5mm—±2.0mm (compliant with ASTM B393 standard)	Tolerance customizable per customer precision requirements
Surface Roughness	Polished surface: Ra≤0.4μm; Bright annealed surface: Ra≤1.0μm	Polished surface: Ra≤0.8μm; Bright annealed surface: Ra≤1.2μm	Surface roughness customizable on demand

Product Name	Pure Niobium Plates, Pure Niobium Sheets
Brand Name	Yunjie
Model	Commercially Pure Niobium (Compliant with ASTM R04200 Grade)
Material	High-Purity Niobium (Commercially pure niobium, meeting ASTM R04200 and high-purity Nb1 grade requirements)
Processes	Vacuum Melting, Hot Rolling, Cold Rolling, Annealing, Finishing, Surface Treatment, Cutting
Minimum Niobium Content	Meets high-purity standards (Nb content ≥ 99.95%)
Density	8.57g/cm³
Advantages	Excellent high-temperature stability, superior corrosion resistance, good electrical conductivity, ultra-pure material, excellent ductility, high dimensional accuracy, good surface finish
Surface Conditions	Acid-alkali cleaned surface, bright annealed surface, polished surface
Delivery Conditions	Soft state (M), Hard state (Y)
Processing Services	Customized dimensions (width, thickness, length), cutting, stamping forming, welding processing
Minimum Order Quantity	1kg (Calculated based on actual orders; bulk purchases available with preferential terms)

Classification

Classification by Product Form

•Pure Niobium Sheets (thickness 0.1mm—1.5mm): Combining flexibility and flatness, with excellent ductility and electrical conductivity. Suitable for precision electronic component substrates, laboratory microdevices, superconducting material accessories, small corrosion-resistant parts, etc., and can undergo high-precision stamping and cutting processes.
•Pure Niobium Plates (thickness 1.5mm—20mm): High structural strength, good stability, and combined high-temperature resistance and corrosion resistance. Suitable for aerospace structural components, chemical corrosion-resistant vessel liners, high-temperature equipment parts, large laboratory device substrates, etc., and can be subjected to cutting, bending, welding, and other processes.
Classification by Processing State

•Soft State (M) Pure Niobium Plates/Sheets: Fully annealed to completely eliminate internal stress, with excellent ductility and plasticity. Facilitates complex forming processes such as deep drawing, bending, and stretching, suitable for precision parts requiring secondary processing.
•Hard State (Y) Pure Niobium Plates/Sheets: Cold-rolled without annealing or with slight annealing, featuring high strength, hardness, and extremely high dimensional accuracy. Suitable for scenarios requiring strength and rigidity (e.g., precision structural brackets, high-temperature wear-resistant parts).
Classification by Surface Treatment Method

•Acid-Alkali Cleaned Pure Niobium Plates/Sheets: Remove surface oxide scale and impurities, offering high surface cleanliness and enhanced corrosion resistance. Suitable for chemical corrosion-resistant equipment, laboratory environments, and other scenarios requiring high surface purity.
•Bright Annealed Pure Niobium Plates/Sheets: Bright and flat surface after annealing with low oxidation, usable directly without subsequent polishing. Suitable for electronic components, aerospace accessories with high appearance requirements, etc.
•Polished Pure Niobium Plates/Sheets: Extremely high surface finish and low roughness. Suitable for precision optical components, high-end electronic devices, and scenarios requiring reduced surface friction.
•Cold-Rolled Forged Pure Niobium Plates/Sheets: Retain the natural cold-rolled surface with high dimensional accuracy. Suitable for scenarios with low surface appearance requirements and emphasis on processing performance (e.g., substrates for subsequent coating and composite processing).

Specification Selection Table and Composition Table

Pure Niobium Plate/Sheet Specification Selection Table

Chemical Composition Table

Product Type	Specification Range	Core Features	Application Scenarios
Laboratory-Grade Precision Pure Niobium Sheets	Thickness: 0.1-0.5mm; Width: 10-300mm; Length: 100-5000mm (single sheet/coil)	Ultra-pure material (Nb≥99.95%), minimal thickness tolerance, smooth surface, excellent ductility, easy cutting and forming	Laboratory precision experimental devices, superconducting material R&D, micro-sensor components, university research projects
Industrial-Grade Universal Pure Niobium Sheets	Thickness: 0.5-1.5mm; Width: 50-500mm; Length: 500-6000mm (single sheet)/50-1000m (coil)	High dimensional accuracy, clean surface, excellent corrosion resistance, stable processing performance, bulk supply available	High-temperature electronic component substrates, small corrosion-resistant parts, precision instrument accessories, metal composite substrates
Industrial-Grade Standard Pure Niobium Plates	Thickness: 1.5-20mm; Width: 50-500mm; Length: 1000-8000mm (single sheet)	High structural strength, stable high-temperature performance, good weldability, consistent dimensions	Chemical corrosion-resistant pipes/vessels, small aerospace structural components, high-temperature equipment parts, mechanical seals
Customized Pure Niobium Plates/Sheets	Customized per customer drawings (thickness, width, length, surface roughness)	Strong adaptability, performance optimized on demand, high personalization, strict matching with customer equipment and process requirements	Special-specification electronic devices, customized high-temperature equipment, high-end equipment supporting parts, specialized experimental devices

Grade	Nb	Impurity Content, Max. (≤)
Grade	Nb	Fe	Si	Ni	C	N	O	H	Zr
Nb1	≥99.95	0.005	0.005	0.005	0.01	0.01	0.015	0.0015	0.02
		Cr	Ta	Mo	W	Ti	Co	Al
		0.002	0.1	0.01	0.03	0.02	0.002	0.002

Characteristics

Excellent High-Temperature Stability

Pure niobium has a melting point of up to 2468℃, enabling long-term stable operation below 1200℃ and short-term resistance to 1600℃. It maintains good mechanical properties and corrosion resistance in high-temperature environments, suitable for medium-high temperature and extreme high-temperature working conditions.

Superior Corrosion Resistance

Exhibits strong stability in harsh environments such as strong acids (excluding hydrofluoric acid), alkalis, molten salts, and high-temperature oxidizing atmospheres. The dense oxide film formed on the surface effectively resists corrosion without contaminating the contacting medium, making it particularly suitable for structural material applications in strong corrosive environments.

Ultra-Pure Impurity-Free Material

Complies with high-purity Nb1 grade standards with Nb content ≥ 99.95% and extremely low levels of various impurities. It does not chemically react with contacting materials, ensuring the safety and stability of product use, especially suitable for high-precision electronics, laboratories, superconductivity, and other scenarios requiring strict material purity.

Outstanding Processing Performance

Excellent ductility allows rolling processing of various thickness specifications. Plates can undergo multiple secondary processes such as cutting, bending, and welding, while sheets can be precisely stamped and formed, meeting the preparation requirements of parts with different shapes and specifications.

High-Precision Dimensional Control

Through precision cold rolling, hot rolling, and finishing processes, it achieves minimal thickness and width tolerances, high surface flatness, and good dimensional consistency. It can accurately match the assembly requirements of high-end equipment, improving the performance stability of end products.

Excellent Surface Quality

Various surface treatment processes can achieve different finish requirements, with surfaces free of oxide scale, scratches, and impurities. This not only enhances corrosion resistance but also meets the high-end surface appearance requirements of electronics, optics, aerospace, and other fields.

Production Process

Raw Material Preparation: High-purity sponge niobium is extracted from niobium ore through mineral processing, enrichment, reduction, and other procedures. This is then refined through several vacuum arc furnace meltings to create niobium ingots that satisfy high-purity Nb1 grade and ASTM R04200 standards (Nb content ≥ 99.95%, uniform composition, extremely low impurity content).
Hot Rolling: In order to eliminate internal imperfections and improve material density, niobium ingots are heated to a specified temperature and hot-rolled into uniformly thick niobium billets. This process lays the groundwork for later cold rolling.
Cold Rolling: In order to eliminate internal imperfections and improve material density, niobium ingots are heated to a specified temperature and hot-rolled into uniformly thick niobium billets. This process lays the groundwork for later cold rolling.
Intermediate Annealing: In order to remove processing internal stress, restore material plasticity, and prevent cracking, deformation, and other problems in later processing, intermediate annealing is introduced during the cold rolling process.

Production Process

Finished Product Annealing: To ensure compliance with material performance requirements, cold-rolled pure niobium plates and sheets undergo finished product annealing with precise control of annealing temperature and holding time based on the customer-required processing state (soft, semi-hard, or hard).
Surface Treatment: To ensure surface quality, the annealed pure niobium plates and sheets are subjected to surface treatments such as acid pickling to eliminate oxide scale, brilliant annealing to enhance surface finish, or polishing to produce a high mirror effect.
Finishing and Inspection: After the final goods are trimmed and cut to satisfy customer size specifications, they undergo stringent inspections that include mechanical property testing, surface quality testing, dimensional accuracy testing, composition re-testing (exact control of impurity content), etc. Along with material inspection reports and quality certificates, this guarantees that the product quality satisfies high-purity Nb1 grade, ASTM R04200, and ASTM B393 criteria.

Application Fields

Electronic Industry

Superconducting material carriers, battery current collector accessories, high-temperature electronic component substrates, and semiconductor device packaging materials. It guarantees the steady operation of electronic devices in harsh conditions by relying on high purity, high electrical conductivity, and high-temperature stability.

Chemical Industry

Precision chemical instrument seals, corrosion-resistant vessels, chemical reactor anti-corrosion layers, and pipelines lined with strong corrosive media. makes use of superior corrosion resistance to increase production safety and prolong equipment service life.

Laboratory Research

Superconducting experimental components, high-temperature micro-reaction tanks, specific material R&D carriers, and substrates for precise experiments. Data accuracy and experimental precision are guaranteed by ultra-pure material free of impurity contamination.

Aerospace

Spacecraft thermal protection components, lightweight composite material substrates, high-temperature corrosion-resistant accessories, and small structural elements. combines exceptional environmental tolerance with great strength to satisfy the demanding demands of the aerospace industry.

Medical Devices

Biocompatible devices, small medical corrosion-resistant components, and accessories for precision medical instruments. safe, non-toxic substance that complies with medical device hygiene regulations and is resistant to corrosion by biological fluids.

New Energy Field

Superconducting energy storage material substrates, seals for hydrogen-related equipment, and high-temperature fuel cell components. enhances the functionality and safety of energy equipment by satisfying the purity and corrosion resistance standards of modern energy materials.

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As a professional expert providing high-purity pure niobium (Nb1/R04200, compliant with ASTM B393) and comprehensive metal materials and product solutions including plates/sheets, foils/strips, pipes, rods/wires, and crucibles, Baoji Yunjie is ready to serve you at any time! For a full range of metal materials and products such as titanium, niobium, zirconium, nickel, aluminum, tantalum, tungsten, and cobalt, please feel free to contact us!

Pure Niobium Plates/Niobium Sheets: Specialized Solutions for Industrial & Laboratory Applications

Product specification

Classification

Specification Selection Table and Composition Table

Characteristics

Production Process

Production Process

Application Fields

Send Inquiry

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