Niobium foil

Niobium foil is an ultra-thin non-ferrous metal foil made from high-purity niobium (Nb) through vacuum melting, forging, rolling, heat treatment, and precision cutting. It features high purity, corrosion resistance, high temperature resistance, good electrical and thermal conductivity, and excellent plasticity, and is widely used in precision fields such as electronics, vacuum, new energy, and chemical corrosion protection.

1. Commonly Used Grades
Pure Niobium Foil: R04200 (≥99.95%), R04210 (≥99.9%)
Customizable: R04251 Niobium-Zirconium Alloy Foil

2. Standards
American Standard: ASTM B393

3. Specifications
Thickness: 0.01 mm ~ 0.5 mm
Width: 5 mm ~ 300 mm (can be slit into narrow strips/foil)
Length: Customizable by roll/sheet
Tolerance: Thickness up to ±0.001 mm (precision grade)

4. Surface and Condition
Surface: Bright rolled surface, pickled surface, double-sided polished
Condition: Soft (annealed), hard (cold rolled)

5. Core Performance
High Melting Point: 2468℃, excellent high-temperature stability
Strong Corrosion Resistance: Resistant to acids, alkalis, salt spray, seawater, and most organic solvents
Electrical and Thermal Conductivity: Stable electrical conductivity, suitable for electrodes, shielding, and thermal pads
Good Plasticity: Can be stamped, bent, welded, and encapsulated
Low Gas Content: Suitable for high vacuum and electronic devices

II. Typical Application Areas
1. Electronics and Vacuum Industry
Vacuum devices, ceramic-metal sealed niobium foil gaskets, sealing sheets
Ion pumps, vacuum chamber shielding sheets, current guide sheets
Semiconductor/coated evaporation source gaskets, heat insulation sheets, current collectors
2. New Energy and Batteries
Lithium battery/solid-state battery current collector foil, transition layer niobium foil
Supercapacitors, electrolytic capacitor electrode substrates
Fuel cell bipolar plate modification, anti-corrosion lining
3. Electric Light Sources and Special Lighting Fixtures
High-pressure sodium lamps, metal halide lamps, niobium foil sealing sheets, lead-out sheets
Halogen lamps, special light source heat insulation sheets, reflectors

4. Chemical Corrosion Protection and Sealing
Foil linings and anti-corrosion sheets for highly corrosive equipment
Flanges, joint soft sealing gaskets, anti-corrosion spacers
Electrochemical anode foils, cathode substrates, sensor electrode sheets
5. Aerospace and Military
Engine heat insulation foils, shielding foils, micro-structural components
Satellite/spacecraft cryogenic heat insulation, conductive connecting sheets
6. Scientific Research and Laboratories
High-temperature furnace heat insulation foils, heating sheets
Nuclear physics, materials experiment low neutron absorption experiment foils
Coating, sputtering target matching foils
III. Product Features
Uniform thickness, smooth surface, suitable for high-precision stamping and packaging
High purity, low impurities, meeting vacuum/electronic/new energy requirements
High temperature resistance, corrosion resistance, long service life
Can be cut according to drawings: round sheets, square sheets, irregular shapes, roll cutting

Quality Control and Testing

Each product undergoes rigorous inspection before shipment:

Dimensional Inspection: Precise measurement of thickness, length, and width

Chemical Composition and Mechanical Property Analysis: Third-party testing reports

Surface Inspection: Visual and microscopic inspection for defects

Ultrasonic Testing: Detection of internal defects

Why Choose Us

Technology and Quality: Located in Baoji, China's Titanium Valley, we possess professional production technology and extensive experience in non-ferrous metal manufacturing.

Global Coverage: We provide consistently high-quality products to customers in Australia, South Korea, Germany, the USA, the UK, Malaysia, and the Middle East.

Quality Commitment: We never compromise on quality and are responsible for every product we manufacture.

Technical Support: We have professional personnel overseeing the entire process from raw materials to finished products!

Contact Us
Our team is dedicated to serving you and hopes that every product you purchase will meet your expectations!

Email: lucky@bjfreelong.com

WhatsApp: +13369210303

Please contact us for detailed quotations and technical specifications. We look forward to becoming your trusted high-end titanium materials partner