Nb1 High-Purity Pure Niobium Mesh: Preferred Choice for Precision Screening & Conduction Under Extreme Conditions

Nb1 grade pure niobium mesh refers to screen products made from high-purity commercially pure niobium (Nb content ≥ 99.95%, compliant with ASTM R04200) through multiple precision processes including vacuum melting, cold rolling foil making, precision weaving, and annealing setting. According to specifications, it can be divided into regular mesh niobium mesh (mesh size 0.1-2mm) and coarse mesh niobium mesh (mesh size 2-5mm). It is mainly used in scenarios such as high-temperature medium screening, chemical corrosion-resistant filtration, aerospace fluid filter components, laboratory precision separation screens, and superconducting equipment conduction meshes. As a core category of high-purity niobium-based screens, relying on excellent high-temperature stability (capable of long-term stable operation below 1200℃ and short-term resistance to 1600℃ high temperature), superior corrosion resistance (strong tolerance to most acids, alkalis, molten salts, and high-temperature gases except hydrofluoric acid), as well as characteristics such as ultra-pure impurity-free material, uniform mesh, and stable mechanical properties, it has become a key material in fields with extremely high requirements on screen purity, screening accuracy, and environmental tolerance, especially suitable for screening, filtration, and conduction applications under high-precision and extreme working conditions.

Product specification

Product Parameters

Product Information

Item	Regular Specifications (Regular/Coarse Mesh Niobium Mesh)	Customization Range
Mesh Specification	20-400 Mesh (corresponding to mesh size 0.1mm-2.0mm)	10-500 Mesh (corresponding to mesh size 0.1mm-5.0mm), customizable on demand
Wire Diameter	0.1mm-0.5mm	0.1mm-1.0mm, precision fine wire customizable
Finished Product Size	500mm×500mm-2000mm×3000mm (sheet/coil)	Maximum customizable size 2000mm×5000mm, supporting fixed-length cutting and coil supply
Tolerance Range	Mesh tolerance: ±0.01mm; Wire diameter tolerance: ±0.005mm (compliant with ASTM B394 standard)	Precision-grade tolerance customizable to meet high-end equipment assembly requirements
Weaving Method	Plain Weave, Twill Weave, Leno Weave	Weaving process customizable on demand to ensure structural stability and screening accuracy

Product Name	Pure Niobium Mesh, High-Purity Niobium Screen Mesh, Precision Niobium Filter Mesh
Brand Name	Yunjie
Model	R04200 (ASTM Standard)
Material	High-Purity Niobium (Commercially pure niobium, compliant with ASTM R04200 grade)
Processes	Vacuum Melting, Cold Rolling Foil Making, Weaving (Plain Weave/Twill Weave), Annealing Setting, Surface Treatment, Cutting & Trimming
Density	8.57g/cm³
Core Advantages	Excellent high-temperature stability (long-term operation below 1200℃, short-term resistance to 1600℃), superior corrosion resistance (resistant to most acids, alkalis, and molten salts except hydrofluoric acid), good electrical and thermal conductivity (thermal conductivity 5.37W/m·K), ultra-pure impurity-free material, uniform and precise mesh, stable structural strength, and high surface finish
Surface Conditions	Pickled Surface, Bright Annealed Surface, Cold-Rolled Natural Color Surface
Delivery Conditions	Soft State (M, fully annealed), Hard State (Y, unannealed after weaving)
Processing Services	Customized dimensions (length, width, mesh specification), cutting & forming, welding & splicing, edge wrapping, special-shaped processing, precision polishing
Minimum Order Quantity	0.5㎡ (preferential terms available for bulk purchases, calculated based on actual orders)

Classification

Classification by Specification & Dimension

•Regular/Coarse Mesh Pure Niobium Mesh: Mesh size 20-400 Mesh (corresponding to 0.1mm-5.0mm), wire diameter 0.1mm-1.0mm, featuring high structural strength, strong stability, and combined high-temperature resistance and corrosion resistance. Suitable for chemical medium-fine particle screening, high-temperature gas filtration, aerospace equipment protection screens and other scenarios, and can undergo secondary processing such as welding, splicing, and edge wrapping.
Classification by Processing State

•Soft State (M) Pure Niobium Mesh: Fully annealed to completely eliminate internal stress, with excellent ductility and plasticity, facilitating complex processing such as bending, forming, and welding. Suitable for precision screen components requiring secondary fine processing.
•Hard State (Y) Pure Niobium Mesh: Unannealed after weaving, with high strength, high hardness, extremely stable mesh, and high dimensional accuracy. Suitable for high-pressure, high-temperature screening scenarios with strict requirements on strength, rigidity, and structural stability.
Classification by Surface Treatment Method

•Pickled Surface Pure Niobium Mesh: Removes oxide scale and impurities from inner and outer surfaces, with high surface cleanliness and further improved corrosion resistance. Suitable for chemical corrosion-resistant environments, laboratory acid-base filtration, and substrates requiring subsequent coating processing.
•Bright Annealed Surface Pure Niobium Mesh: Bright and flat surface after annealing, low oxidation degree, and excellent electrical conductivity. Can be directly used without subsequent polishing, suitable for electronic component conduction meshes, aerospace accessories with high appearance requirements, and precision screening scenarios.
•Polished Surface Pure Niobium Mesh: Extremely high surface finish, low roughness, small friction coefficient, and not easy to scale or clog. Suitable for high-precision fluid screening, optical equipment auxiliary components and other scenarios.
•Cold-Rolled Natural Color Surface Pure Niobium Mesh: Retains the natural surface after processing, with high dimensional accuracy and excellent processing performance. Suitable for general screening and protection scenarios with low surface appearance requirements and emphasis on mechanical properties and structural stability.

Specification Selection Table & Composition Table

Pure Niobium Mesh Specification Selection Table

Chemical Composition Table

Product Type	Specification Range	Core Features	Application Scenarios
Industrial-Grade Universal Pure Niobium Mesh	Mesh size 100-400 Mesh; Wire diameter 0.1-0.3mm; Size 500×500mm-1000×3000mm (sheet/coil)	High dimensional accuracy, clean surface, excellent corrosion resistance, stable processing performance, available for bulk supply	Chemical corrosion-resistant screening, electronic component conduction mesh, high-temperature gas filter tube, general precision equipment filter mesh
Industrial-Grade Heavy-Duty Pure Niobium Mesh	Mesh size 20-100 Mesh; Wire diameter 0.3-1.0mm; Size 500×500mm-1000×5000mm (sheet)	High structural strength, stable high-temperature performance, good weldability, excellent sealing performance	Large chemical reactor filtration, aerospace fluid components, high-temperature and high-pressure transportation screening, large experimental device filter mesh
Customized Pure Niobium Mesh	Customized per customer drawings (mesh specification, wire diameter, size, weaving method, surface treatment)	Strong adaptability, performance optimized on demand, high personalization, strict matching with customer equipment and process requirements	Special-specification high-temperature screening mesh, customized chemical equipment filter mesh, high-end equipment precision conduction mesh, special experimental devices

Grade	Nb	Impurity Content, Max. (≤)	Impurity Content, Max. (≤)	Impurity Content, Max. (≤)	Impurity Content, Max. (≤)	Impurity Content, Max. (≤)	Impurity Content, Max. (≤)	Impurity Content, Max. (≤)	Impurity Content, Max. (≤)
		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℃ high temperature. It maintains good mechanical properties, mesh stability, and structural integrity in high-temperature environments, adapting to medium-high temperature and extreme high-temperature screening and conduction working conditions.

Superior Corrosion Resistance

It has strong stability in harsh environments such as strong acids (except hydrofluoric acid), strong alkalis, molten salts, and high-temperature oxidizing atmospheres. The dense oxide film formed on the surface can effectively resist corrosion without contaminating the filtering medium, especially suitable for screen pipeline 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 content of various impurities (Fe, Si, Ni and other impurities ≤ 0.005%). No harmful impurities precipitate, and it will not chemically react with the filtering medium, ensuring safe and stable screening process, suitable for harsh scenarios such as high-precision electronics, superconductivity, and laboratories.

Excellent Processing and Formability

Good ductility enables precision cold rolling foil making, various weaving processes, and secondary processing such as bending, welding, and cutting. It has good wire diameter uniformity and can complete complex processing such as special-shaped forming and splicing, meeting the preparation requirements of precision screens of different shapes and specifications.

Precise Dimensional Control

Through precision foil making, weaving forming, and finishing processes, it achieves uniform mesh, minimal wire diameter tolerance, high surface flatness, and good dimensional consistency, which can accurately match the assembly requirements of high-end equipment and ensure screening accuracy and conduction stability.

Good Electrical and Thermal Conductivity

High-purity material ensures excellent electrical and thermal conductivity (Vickers hardness 1320MPa, Young's modulus 105GPa). In scenarios such as high-temperature screens and superconducting conduction meshes, it can effectively balance temperature distribution, reduce energy loss, and improve equipment operation efficiency and safety.

Production Process

Raw Material Preparation: Niobium ore undergoes mineral processing, enrichment, reduction, and other processes to extract high-purity sponge niobium, which is then refined and melted multiple times in a vacuum arc furnace to produce niobium ingots meeting high-purity Nb1 grade and ASTM R04200 standards (Nb content ≥ 99.95%, uniform composition, extremely low impurity content).
Cold Rolling Foil Making: The niobium ingot is heated to a specific temperature and then subjected to multiple passes of cold rolling to make ultra-thin niobium foil, which is then cut into niobium wires with precise wire diameter through slitting process. This eliminates internal defects of the wire, refines the grain structure, improves material density and mechanical properties, laying the foundation for subsequent weaving processing.
Precision Weaving: Through high-precision weaving equipment, niobium wires are woven into shape according to preset mesh specifications and weaving methods (plain weave/twill weave). The mesh uniformity of each process is monitored in real time to ensure the consistency and structural stability of the finished mesh.
Intermediate Annealing: Intermediate annealing treatment is inserted during the weaving process to eliminate weaving internal stress, restore material plasticity and toughness, and avoid problems such as mesh deformation, wire breakage, and mesh deviation in subsequent processing.

Production Process

Finished Product Annealing: According to the processing state (soft state, hard state) required by customers, the woven pure niobium mesh undergoes finished product annealing treatment. The annealing temperature, holding time, and cooling rate are precisely controlled to ensure that the material properties and dimensional stability meet the standards.
Surface Treatment: The annealed pure niobium mesh undergoes surface treatment, optional pickling (to remove oxide scale), bright annealing (to improve surface finish and electrical conductivity), or polishing (to achieve a high mirror effect), ensuring surface quality, corrosion resistance, and smooth screening.
Finishing & Inspection: The finished products are cut, trimmed, and leveled to meet customer size and shape requirements; subsequent rigorous inspections include composition re-testing (precise control of impurity content), mesh accuracy testing, surface quality testing, mechanical property and electrical conductivity testing, etc. This ensures that product quality meets the requirements of high-purity Nb1 grade, ASTM R04200, and ASTM B394 standards, accompanied by material inspection reports and quality certificates.

Application Fields

Electronic Industry

Superconducting equipment conduction mesh, heat dissipation mesh for high-temperature electronic components, filter screen for semiconductor devices, conduction components for precision instruments. Relying on high purity, high electrical conductivity, and high-temperature stability, it ensures the stable and efficient operation of electronic devices in extreme environments.

Chemical Industry

Strong corrosive medium filter mesh, screening mesh for chemical reactors, fluid screen for precision chemical instruments, purification filter mesh for acid-base solutions. Utilizes excellent corrosion resistance to extend the service life of the mesh, avoid medium contamination, and improve production safety and reliability.

Laboratory Research

Precision micro-filter mesh, screen for high-temperature micro-reaction vessels, superconducting experimental conduction mesh, screening mesh for special material R&D. Ultra-pure material without impurity contamination ensures experimental precision, data accuracy, and experimental process stability.

Aerospace

High-temperature gas filter mesh for spacecraft, precision screen for aviation instruments, auxiliary mesh for spacecraft thermal protection systems, filter mesh for fluid components. Combines high strength, extreme environmental tolerance, and structural stability to adapt to the harsh working condition requirements of the aerospace field.

New Energy Field

Conduction mesh for high-temperature fuel cells, filter screen for hydrogen energy equipment, conduction mesh for superconducting energy storage materials, precision filter mesh for photovoltaic equipment. Adapts to the requirements of new energy materials for purity, electrical conductivity, and corrosion resistance, improving the performance, efficiency, and safety of energy equipment.

Metallurgical Industry

High-temperature melt screening mesh, filter mesh for rare metal purification, corrosion-resistant screen for metallurgical wastewater treatment. High-temperature resistance and corrosion resistance ensure the purity and stability of the metallurgical process and improve product quality.

Send Inquiry

As a professional expert providing high-purity pure niobium (Nb1/R04200, compliant with ASTM B394 standard) and comprehensive solutions for various metal screens, pipes, rods/wires, plates/sheets, foils/strips, and crucibles, Baoji Yunjie is ready to serve you at any time! For a full range of metal materials and customized products such as titanium, niobium, zirconium, nickel, aluminum, tantalum, tungsten, and cobalt, please feel free to contact us!

Nb1 High-Purity Pure Niobium Mesh: Preferred Choice for Precision Screening & Conduction Under Extreme Conditions

Product specification

Classification

Specification Selection Table & Composition Table

Characteristics

Production Process

Production Process

Application Fields

Send Inquiry

Nb1 High-Purity Pure Niobium Crucibles: Preferred Choice for Precision Melting Under Extreme High-Temperature Conditions

Pure Niobium Rods/Niobium Wires: Specialized Solutions for Industrial & Laboratory Applications

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

Pure Niobium Foils/Niobium Strips: Specialized Solutions for Industrial & Laboratory Applications

Pure Niobium Tubes: Specialized