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ATOMFAIR® a large pile of circular metallic 304 and 316L stainless steel conical disc springs on a white background.

304/316L Stainless Conical Springs 15.4×1.1mm ATOMFAIR®

Price range: $130.00 through $220.00

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.

ASTM A240 304/316L stainless conical springs for CR2032 coin cells, 15.4×1.1 mm, 10–50 N force, ≥10,000-cycle fatigue life; glovebox-ready. Order now.

SKU: AFMSWZYR763
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ATOMFAIR 304/316L STAINLESS CONICAL SPRINGS 15.4×1.1MM

RESEARCH GRADE MATERIAL

Product Overview
ATOMFAIR® 304/316L Stainless Conical Springs 15.4×1.1mm is a coin cell spring for battery research and laboratory procurement. Key specifications include Product Name: ATOMFAIR® 304/316L Stainless Steel Conical Springs; Spring Type: Conical Spring; Material Options: 304 Stainless Steel/316L Stainless Steel (Compliant with ASTM A240); Dimensions (Diameter × Free Height): 15.4 × 1.1 mm (Default); Model Compatibility: CR2032 (Compatible with all CR20 Series Internal Dimensions). It is organized for Lab Accessories & Consumables workflows.

ATOMFAIR® 304/316L Stainless Steel Conical Springs
ITEM DESCRIPTION
Product Name ATOMFAIR® 304/316L Stainless Steel Conical Springs
Spring Type Conical Spring
Material Options 304 Stainless Steel / 316L Stainless Steel (Compliant with ASTM A240)
Dimensions (Diameter × Free Height) 15.4 × 1.1 mm (Default)
Model Compatibility CR2032 (Compatible with all CR20 Series Internal Dimensions)
Packaging Specification 1000 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
304: General Corrosion Resistant
316L: Sulfide/Chloride Ion Corrosion Resistant, High Temperature Resistant
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 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 under corrosive conditions.
PACKAGING: 1000 pieces/pack. 100% dimensional inspection, spring force calibration, surface quality 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 conical spring must be used within its specified spring force range (10 N–50 N) and voltage window (-0.5 V to 5.0 V) to prevent electrochemical side reactions and mechanical failure. Material selection must account for electrolyte corrosivity, with 316L recommended for sulfide/chloride-containing environments.

  • Voltage Compatibility: The spring induces no side reactions within a voltage range of -0.5 V to 5.0 V, but voltages outside this window may cause corrosion or contamination.
  • Corrosion Resistance: 304 stainless steel offers general corrosion resistance, while 316L provides enhanced resistance to sulfide and chloride ions at elevated temperatures.
  • Mechanical Fatigue: Fatigue life exceeds 10,000 cycles, but applied forces beyond 50 N may cause permanent deformation or buckling.
  • Dimensional Precision: Diameter and free height tolerances of ±0.02 mm are required to maintain consistent contact pressure and fit within CR20 series coin cell cases.
  • Assembly Conditions: The spring is supplied oil-free and burr-free for direct use in argon-filled gloveboxes without pre-cleaning.

What is the advantage of using this conical spring over a wave spring when assembling coin cells with thick electrodes or high active material loading?

The conical spring provides a higher spring force range of 10 N–50 N compared to wave springs which offer only 5 N–30 N according to the elastic springs specification table within this series documentation. This higher force combined with strong anti-buckling capability and good self-centering performance makes it specifically suited for thick electrodes and high-loading batteries where greater pressure is needed to maintain consistent contact without buckling.

Is this conical spring compatible with sulfide-based solid-state electrolytes if I choose the default material option?

The default material option corresponds to general purpose corrosion resistant grade per the important notice stating default accompanying accessories are made of general purpose stainless steel; however this product also offers an optional material choice specifically listed as resistant to sulfide ion corrosion per its core performance parameters making it suitable for sulfide solid-state battery systems.

Does this conical spring require any pre-cleaning or surface treatment before use inside an argon-filled glovebox?

No pre-cleaning or surface treatment is required because each spring undergoes rigorous quality control including surface quality verification ensuring oil-free condition before shipment per packaging specification; they can be used directly for battery assembly inside gloveboxes without additional treatment.

ATOMFAIR 304/316L Stainless Conical Springs (15.4×1.1 mm) provide a high spring force range of 10–50 N with ≥10,000 cycle fatigue life, optimized for thick-electrode and high-loading coin cells. Material options (304 or 316L stainless steel) address general or aggressive corrosion environments, but default dimensions and material availability may require customization for non-standard configurations.

Positive

  • High spring force and fatigue life: Delivers 10–50 N force range with ≥10,000 cycle fatigue life, enabling reliable pressure control in thick-electrode, high-loading, and vibration-exposed battery assemblies.
  • Material options for corrosion resistance: Available in 304 stainless steel for general corrosion resistance or 316L stainless steel for enhanced resistance to sulfide/chloride ions and high temperatures, compliant with ASTM A240.

Trade-offs

  • Default size and material constraints: The default 15.4×1.1 mm dimensions and non-coated stainless steel options may not suit all cell configurations or specialized electrochemical settings; other sizes and materials require custom request via email.
  • Packaging quantity may exceed lab needs: Supplied in 1000-piece packs, which may be excessive for small-scale or infrequent experimental usage, potentially increasing per-unit inventory cost.

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).

Material

304SS, 316SS

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