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ATOMFAIR® a large pile of circular metallic aluminum clad conical disc springs on a white background.

Al-Clad Conical Springs 15.4mm CR2032 ATOMFAIR®

$75.00

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.

Premium research grade Al-clad conical springs 15.4×1.1mm for CR2032 cells. Spring force 10-50N, coating 5-10μm, fatigue life ≥10,000 cycles. Order now.

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Description

ATOMFAIR® Al-Clad Conical Springs

RESEARCH GRADE MATERIAL

Product Overview
Premium Al-clad conical springs (15.4 × 1.1 mm) for battery research. Features specialized aluminum-clad surface treatment on high-performance conical spring geometry, delivering a spring force range of 10 N–50 N with good self-centering performance and strong anti-buckling capability. Engineered to provide stable cell internal pressure with fatigue life ≥10,000 cycles, making it ideal for thick electrodes, high-loading batteries, vibration environment testing, and systems requiring precise pressure control. Customizable sizing variants are available upon request. If you require other sizes, models, and materials, please email inquiry@atomfair.com for customization.

ATOMFAIR® Al-Clad Conical Springs
ITEM DESCRIPTION
Product Name ATOMFAIR® Al-Clad Conical Springs
Spring Type Conical Spring
Material & Surface Treatment Aluminum-Clad Stainless Steel (Coating Thickness 5–10 μm, Adhesion ≥5B Grade)
Dimensions (Diameter × Free Height) 15.4 × 1.1 mm (Default)
Model Compatibility CR2032 (Compatible with all CR20 Series Internal Dimensions)
Packaging Specification 60 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
Stable Cell Internal Pressure
Optimal Application Scenarios Thick electrodes, high-loading batteries, vibration environment testing, systems requiring precise pressure control
Customization Options For other sizes, models, 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 thick-electrode high-loading batteries, vibration environment testing, and all systems requiring precise pressure control with stable cell internal pressure maintenance.
PACKAGING: 60 pieces/pack. 100% dimensional inspection, coating thickness verification, spring force calibration, 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®

How does the aluminum-clad coating thickness of 5–10 μm affect the spring's electrochemical stability at the upper voltage limit of 5.0 V?

The aluminum-clad coating provides stable electrochemical performance within the tested voltage range of -0.5 V to 5.0 V, as verified by constant potential polarization and cyclic voltammetry. The 5–10 μm coating thickness with adhesion ≥5B ensures no delamination or side reactions at high voltage, maintaining the spring's force profile and cell internal pressure stability.

Can the ATOMFAIR Al-Clad conical springs be used in CR2025 or CR2016 cell assemblies?

Yes, the 15.4 × 1.1 mm conical springs are compatible with all CR20 series internal dimensions, including CR2025, CR2032, and CR2016. Their self-centering geometry and anti-buckling capability ensure proper alignment and consistent 10–50 N spring force within the standard coin cell casing.

What ensures the aluminum coating does not peel after 10,000 compression cycles?

The aluminum-clad coating has an adhesion grade of ≥5B, indicating excellent bonding to the stainless steel substrate per ASTM D3359. Combined with the spring's design for ≥10,000 cycles, the coating remains intact under repeated compression within the 10–50 N force range, ensuring stable electrochemical performance.

The ATOMFAIR Al-Clad Conical Springs provide reliable, electrochemically inert internal pressure control for CR20 series coin cells, featuring a 10–50 N force range and ≥10,000 cycle fatigue life. However, their fixed 15.4 mm size restricts use to CR20 formats, and the 10 N minimum force may exceed the tolerance of delicate or low-loading electrode assemblies.

Positive

  • High Fatigue Life and Force Range: With a fatigue life ≥10,000 cycles and spring force range of 10 N–50 N, this conical spring ensures long-term stable cell internal pressure for repeated testing, ideal for thick-electrode and high-loading batteries.
  • Electrochemically Inert Al-Clad Surface: The aluminum-clad stainless steel (coating thickness 5–10 μm, adhesion ≥5B) is verified via constant potential polarization and cyclic voltammetry to be inert within -0.5 V to 5.0 V, eliminating side reactions in battery tests.

Trade-offs

  • Limited to CR20 Series Coin Cells: The default 15.4 × 1.1 mm spring is designed exclusively for CR2032 and CR20 series internal dimensions; use with other cell formats requires custom ordering, increasing lead time.
  • Minimum Spring Force May Be Too High: With a spring force minimum of 10 N, this spring may exert excessive pressure on thin or low-loading electrodes, risking structural damage or altered electrochemical behavior.

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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