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

Au-Coated Conical Springs 15.4mm Research Grade 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 conical springs 15.4 × 1.1 mm with gold coating 0.5-2 μm and contact resistance ≤1 mΩ for precise battery testing. Order now.

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Description

ATOMFAIR® Au-Coated Conical Springs

RESEARCH GRADE MATERIAL

Product Overview
Premium Au-coated conical springs (15.4 × 1.1 mm) for battery research. Features specialized gold plating with coating thickness 0.5–2 μm to minimize contact resistance (≤1 mΩ) and maximize electrochemical stability under demanding experimental conditions. Engineered with superior self-centering performance and strong anti-buckling capability with a spring force range of 10 N–50 N and fatigue life ≥10,000 cycles, delivering standardized hardware support for accurate and reproducible experimental data. Custom sizes are available upon request. If you require other sizes and materials, please email inquiry@atomfair.com for customization.

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 inquiry@atomfair.com 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 inquiry@atomfair.com 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 inquiry@atomfair.com 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 Kapton 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 inquiry@atomfair.com 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 inquiry@atomfair.com 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 Kapton 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 quotations.
EMAIL: inquiry@atomfair.com
Manufacturer: Atomfair LLC
Brand: ATOMFAIR®

These conical springs are engineered for precision electrochemical testing with a gold coating that ensures low contact resistance and high chemical stability. Proper handling is required to preserve the coating integrity and maintain spring force characteristics within the specified range.

  • Coating Integrity: The gold layer (0.5–2 μm) must not be scratched or abraded to retain ≤1 mΩ contact resistance.
  • Spring Force Limits: Exceeding 50 N or cycling beyond 10,000 cycles may cause permanent deformation and loss of calibration.
  • Alignment Requirement: The conical design provides self-centering; ensure concentric seating to avoid off-axis loading and buckling.
  • Chemical Compatibility: The gold coating offers stability in common battery electrolytes, but the underlying stainless steel may be susceptible to aggressive acidic or basic media.

What is the trade-off between gold coating thickness and contact resistance for these conical springs in high-precision EIS testing?

The specified gold coating thickness of 0.5–2 μm achieves a contact resistance of ≤1 mΩ, which is the key parameter for minimizing interfacial impedance in electrochemical impedance spectroscopy. Thicker coatings within that range provide improved wear resistance without exceeding the 1 mΩ threshold, ensuring both durability and the ultra-low resistance required for accurate high-precision EIS measurements.

Can these Au-coated conical springs be used in organic electrolyte systems with high-voltage cathode materials operating above 4.5 V?

Yes, these springs are electrochemically verified to cause no side reactions within a voltage range of -0.5 V to 5.0 V, which fully covers high-voltage cathode operation above 4.5 V. The gold coating provides superior chemical stability against corrosion in organic electrolytes, making them suitable for demanding battery chemistries such as NMC or LNMO.

What pre-use handling is required to maintain the 0.5–2 μm gold coating integrity during battery assembly in a glovebox?

The springs are supplied pre-cleaned, oil-free, burr-free, and impurity-free, and can be used directly for battery assembly inside gloveboxes without additional cleaning. To protect the thin gold coating, always handle with clean, non-marring tweezers and avoid any abrasive contact or mechanical scraping, as the 0.5–2 μm layer is susceptible to damage from rough handling.

The ATOMFAIR Au-Coated Conical Springs provide a gold-plated contact surface (0.5–2 μm, ≤1 mΩ contact resistance) with a spring force range of 10–50 N and fatigue life ≥10,000 cycles, optimized for ultra-precision electrochemical testing, EIS, and in-situ characterization. The 15.4×1.1 mm default dimensions may require customization for nonstandard cells, and the verified electrochemical stability window of –0.5 V to 5.0 V restricts use beyond this potential range.

Positive

  • Low Contact Resistance Gold Plating: Gold coating thickness 0.5–2 μm achieves contact resistance ≤1 mΩ, critical for accurate EIS and micro-current measurements.
  • High Fatigue Life and Consistent Force: Spring force range 10–50 N with fatigue life ≥10,000 cycles ensures reproducible pressure control over extended experimental runs.

Trade-offs

  • Voltage Range Limitation: Electrochemical compatibility verified only within –0.5 V to 5.0 V; outside this window the gold coating may induce side reactions.
  • Fixed Default Dimensions: Default size 15.4×1.1 mm may not fit all cell housings; custom sizes require inquiry and lead time.

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). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).

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