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ATOMFAIR® small cluster of gold au-coated conical disc springs arranged on a white background.

Au-Coated Conical Springs 15.4×1.1mm, 10/Pack ATOMFAIR®

$89.00

Institutional Procurement & Supply Compliance: As a verified US supplier, Atomfair accepts formal institutional Purchase Orders (POs), contract billing schedules, and custom procurement loops for university and national laboratories, and corporate R&D departments globally.

Research-grade Au-coated stainless steel conical springs for CR20, 15.4×1.1 mm, 0.5–2 μm coating, ≤1 mΩ contact resistance, 10 pcs/pack. Order now.

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ATOMFAIR AU-COATED CONICAL SPRINGS 15.4MM RESEARCH GRADE

RESEARCH GRADE MATERIAL

Product Overview
ATOMFAIR® Au-Coated Conical Springs 15.4mm Research Grade is a coin cell spring for battery research and laboratory procurement. Key specifications include Product Name: ATOMFAIR® Au-Coated Conical Springs; Spring Type: Conical Spring; Material: Gold-Coated Stainless Steel (Coating Thickness 0.5–2 μm, Contact Resistance ≤1 mΩ); Dimensions (Diameter × Free Height): 15.4 × 1.1 mm (Default); Packaging Specification: 10 Pieces/Pack. It is organized for Lab Accessories & Consumables workflows.

ATOMFAIR® Au-Coated Conical Springs
ITEM DESCRIPTION
Product Name ATOMFAIR® Au-Coated Conical Springs
Spring Type Conical Spring
Material Gold-Coated Stainless Steel (Coating Thickness 0.5–2 μm, Contact Resistance ≤1 mΩ)
Dimensions (Diameter × Free Height) 15.4 × 1.1 mm (Default)
Packaging Specification 10 Pieces/Pack
Core Performance Parameters Spring Force Range 10 N–50 N
Good Self-Centering Performance
Strong Anti-Buckling Capability
Fatigue Life ≥10,000 cycles
Superior Chemical Stability
Optimal Application Scenarios Ultra-precision electrochemical testing, EIS testing, micro-current testing, in-situ characterization, thick electrodes, high-loading batteries, vibration environment testing, systems requiring precise pressure control
Customization Options For other sizes and materials, please email to request customization.

Research-Grade Core Quality Advantages
  • Uniform High-Precision Tolerance Control: All component dimensions strictly controlled within ±0.02 mm, ensuring perfect matching across different batches and components, completely eliminating assembly gaps and uneven pressure issues caused by dimensional errors.
  • Full Material Gradient Coverage: Provides a complete material selection from basic to high-end, allowing flexible selection based on corrosivity, voltage range, and testing precision requirements of your experimental system, avoiding experimental failure due to mismatched consumables.
  • Rigorous Electrochemical Compatibility Verification: All materials have undergone constant potential polarization, cyclic voltammetry, and other electrochemical tests to ensure no side reactions within a -0.5 V to 5.0 V voltage range, guaranteeing no interference with battery performance test results.
  • Standardized Batch Production: Fully automated production and quality control ensures highly consistent product performance within and across batches, effectively reducing experimental systematic errors.

APPLICATION SCOPE: Precision assembly and standardized testing for ultra-precision electrochemical experiments, EIS measurements, micro-current testing, in-situ characterization, thick-electrode high-loading batteries, vibration environment testing, and all systems requiring precise pressure control with minimal contact resistance.
PACKAGING: 10 pieces/pack. 100% dimensional inspection, coating thickness verification, and appearance inspection before shipment, ensuring oil-free, burr-free, and impurity-free conditions. Can be used directly for battery assembly inside gloveboxes.
IMPORTANT NOTICE: This series is a one-stop assembly solution for coin cells dedicated to electrochemical research. Default accompanying accessories are made of 304 stainless steel. If other materials or special dimensions are required, please email for customization.



This series is a one-stop assembly solution for coin cells dedicated to electrochemical research, comprehensively covering the three mainstream models CR2032, CR2025, and CR2016. It provides a full material and specification selection of three core components—positive/negative electrode cases, conductive spacers, and elastic springs. Independent purchase of single components is supported, and pre-matched complete assembly kits are also available. Fully compatible with all cutting-edge research systems, including conventional lithium-ion batteries, sodium-ion batteries, all-solid-state batteries, lithium-air batteries, and high-voltage batteries, it provides standardized hardware support for the accuracy and reproducibility of experimental data.
Important Note: Default accompanying accessories are made of 304 stainless steel. For accessories made of other materials, please email for customization.

I. Positive/Negative Electrode Cases
Type Classification Material / Special Structure Compatible Models Core Performance Parameters Optimal Application Scenarios
Basic Universal 304 Stainless Steel CR2032/CR2025/CR2016 Dimensional Tolerance ±0.02 mm
Sealing Pressure ≥5 MPa
Operating Temp. -40°C to 120°C		 Conventional Li-ion/Na-ion batteries, aqueous battery basic testing, batch prototype preparation
Basic Universal 316L Stainless Steel CR2032/CR2025/CR2016 Dimensional Tolerance ±0.02 mm
Sealing Pressure ≥6 MPa
Operating Temp. -40°C to 150°C		 Sulfide solid-state batteries, high-voltage batteries (>4.5 V), long-term cycling tests, highly corrosive systems
High-Performance Coated Aluminum Coated CR2032/CR2025/CR2016 Coating Thickness 5–10 μm
Adhesion ≥5B Grade
Volume Resistivity ≤3×10⁻⁸ Ω·m		 Lightweight batteries, low contact resistance precision testing, systems sensitive to metal ion contamination
High-Performance Coated Titanium Coated CR2032/CR2025/CR2016 Coating Thickness 3–8 μm
Excellent Biocompatibility
Resistant to Strong Acid/Base Corrosion		 Bio-batteries, aqueous zinc batteries, strongly acidic/alkaline electrolyte systems
High-Performance Coated Nickel Coated CR2032/CR2025/CR2016 Coating Thickness 5–12 μm
Excellent Weldability
Atmospheric Corrosion Resistant		 Battery structures requiring tab welding, pilot-scale batch production, routine electrochemical testing
High-Performance Coated Gold Coated CR2032/CR2025/CR2016 Coating Thickness 0.5–2 μm
Contact Resistance ≤1 mΩ
Superior Chemical Stability		 Ultra-precision electrochemical testing, EIS testing, micro-current testing, in-situ characterization
Specialized Research Li-Air Mesh Type CR2032/CR2025/CR2016 Pore Size 0.2–0.5 μm
Waterproof Rating IP67
Uniform Gas Distribution Design		 Lithium-air batteries, lithium-oxygen batteries, gas-involved reaction battery systems
Specialized Research polyimide Window Type CR2032/CR2025/CR2016 Window Thickness 25–50 μm
Optical Transmittance ≥85%
Electrolyte Corrosion Resistant		 In-situ optical characterization, in-situ Raman/IR spectroscopy, in-situ microscopy observation

II. Conductive Spacers
Default Size: Φ15.8 × 0.5 mm, compatible with the internal dimensions of all CR20 series cell cases. Other thicknesses and special sizes are customizable; please email for customization.
Material Available Size (Diameter × Thickness) Core Performance Parameters Optimal Application Scenarios
99.5% Industrial Pure Aluminum Φ15.8 × 0.5 mm (Default) Dimensional Tolerance ±0.02 mm
Volume Resistivity 2.7×10⁻⁸ Ω·m
No Electrochemical Side Reactions		 Precision experiments requiring high contact resistance, conventional Li-ion/Na-ion batteries
304 Stainless Steel Φ15.8 × 0.5 mm (Default) Dimensional Tolerance ±0.02 mm
High Mechanical Strength
General Corrosion Resistant		 Most routine testing scenarios, aqueous batteries, low-to-medium voltage systems
316L Stainless Steel Φ15.8 × 0.5 mm (Default) Dimensional Tolerance ±0.02 mm
Sulfide/Chloride Ion Corrosion Resistant
High Temperature Resistant		 Sulfide solid-state batteries, high-voltage batteries, highly corrosive systems, long-term cycling tests

III. Elastic Springs
Default Size: φ15.4 × 0.3 mm, compatible with the internal dimensions of all CR20 series cell cases. Other heights and special sizes are customizable; please email for customization.
Spring Type Available Materials Available Size (Diameter × Free Height) Core Performance Parameters Optimal Application Scenarios
Wave Spring (Belleville) Al Coated / 304 SS / 316L SS / Au Coated SS φ15.4 × 1.1 mm (Default) Spring Force Range 5 N–30 N
Large Contact Area
Small Footprint
Fatigue Life ≥10,000 cycles		 Most routine testing, thin electrodes, low-loading batteries; universal preferred choice
Conical Spring Al Coated / 304 SS / 316L SS / Au Coated SS φ15.4 × 1.1 mm (Default) Spring Force Range 10 N–50 N
Good Self-Centering
Strong Anti-Buckling
Fatigue Life ≥10,000 cycles		 Thick electrodes, high-loading batteries, vibration environment testing, systems requiring precise pressure control

IV. Complete Assembly Kit Specifications
Kit Type Included Components Corresponding Battery Model Configurable Options
Standard Assembly Kit Positive Case + Negative Case + Spacer + Spring CR2032/CR2025/CR2016 All materials freely combinable
Spacer thickness customizable
Spring height customizable
Li-Air Dedicated Kit Mesh Positive Case + Negative Case + Waterproof Breathable Membrane + Spacer + Spring CR2032/CR2025/CR2016 304/316L SS material optional
Spacer thickness customizable
Spring height customizable
In-Situ Characterization Kit polyimide Window Cell Case + Gold Coated Spacer + Gold Coated Spring CR2032/CR2025/CR2016 Window thickness optional
Spacer thickness customizable
Spring height customizable

International Quality Standards
  • Stainless steel materials comply with ASTM A240 international standard.
  • Pure aluminum materials comply with ASTM B209 international standard.
  • All coating thicknesses are uniform, with adhesion meeting ASTM B571 standard.
  • 100% dimensional inspection, sealing performance testing, and appearance inspection before shipment.
  • Oil-free, burr-free, and impurity-free; ready for direct use in glovebox battery assembly.
TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official institutional quotations.
EMAIL: INQUIRY@ATOMFAIR.COM
Manufacturer: Atomfair LLC
Brand: ATOMFAIR®

This gold-coated conical spring is designed for coin cell battery assembly in electrochemical research. It is certified to operate without side reactions within a voltage window of -0.5 V to 5.0 V.

  • Electrochemical Voltage Window: The gold coating and stainless steel substrate are verified to remain electrochemically inert between -0.5 V and 5.0 V.

How does the Au-coated conical spring compare to wave springs for thick electrode coin cell applications?

The conical spring provides a higher spring force range of 10 N–50 N compared to the wave spring's 5 N–30 N, making it suitable for thick electrodes and high-loading batteries. It also offers good self-centering and strong anti-buckling capability, while wave springs are better for thin electrodes and routine testing due to larger contact area and smaller footprint.

Is the Au-coated conical spring compatible with organic electrolytes and high-voltage battery systems?

Yes. The gold coating provides superior chemical stability and the spring has been electrochemically verified to cause no side reactions within a -0.5 V to 5.0 V voltage range. The stainless steel base material is corrosion-resistant, and the spring is designed for ultra-precision electrochemical testing, EIS, and micro-current measurements.

What are the storage and handling requirements for Au-coated conical springs before use?

The springs are shipped 100% inspected, oil-free, burr-free, and impurity-free, and can be used directly for battery assembly inside gloveboxes without additional cleaning. They should be stored in a clean environment to maintain the 0.5–2 μm gold coating and low contact resistance (≤1 mΩ).

The Atomfair Au-Coated Conical Spring offers low contact resistance (≤1 mΩ) and high spring force (10-50 N) with excellent self-centering, making it suitable for demanding coin cell experiments requiring precise pressure control. However, the thin gold coating (0.5-2 μm) demands careful handling and the 15.4 mm diameter restricts use to standard CR20 series cells.

Positive

  • Ultra-low contact resistance for precision testing: Gold coating with ≤1 mΩ contact resistance and superior chemical stability enables artifact-free ultra-precision electrochemical measurements, including EIS and micro-current testing.
  • High force range with self-centering geometry: Spring force of 10-50 N combined with conical self-centering and anti-buckling design ensures uniform pressure distribution, critical for thick electrodes and high-loading batteries.

Trade-offs

  • Thin gold coating vulnerable to wear: The 0.5–2 μm gold coating is susceptible to mechanical damage from repeated compression or abrasive contact, which may increase contact resistance over extended cycling.
  • Limited to CR20 series coin cell format: The 15.4 mm diameter and 1.1 mm free height are optimized for internal dimensions of CR2032/CR2025/CR2016 cells, restricting compatibility to this form factor unless custom ordered.

Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.

To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.

Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).

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