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ATOMFAIR® a small cluster of metallic 304 and 316L stainless steel wave spring washers on a white background.

304/316L Stainless Steel Wave Springs 15.4mm ATOMFAIR®

$130.00

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 wave springs for CR2032 coin cells. 15.4mm diameter, spring force 5-30N, fatigue life ≥10,000 cycles. Order now.

SKU: AFMSMDNW051
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Description

ATOMFAIR® 304/316L Stainless Steel Wave Springs

RESEARCH GRADE MATERIAL

Product Overview
Premium 304/316L stainless steel wave springs (15.4 × 1.1 mm) for battery research. Manufactured from high-grade stainless steel compliant with ASTM A240, featuring a spring force range of 5 N–30 N with a large contact area and small footprint design. The 304 variant offers high mechanical strength and general corrosion resistance, while the 316L variant provides enhanced sulfide/chloride ion corrosion resistance and high-temperature tolerance. Engineered to deliver stable cell internal pressure with fatigue life ≥10,000 cycles, making it the universal preferred choice for most routine testing, thin electrodes, and low-loading batteries. Customizable sizing variants are available upon request. If you require other sizes, models, and materials, please email inquiry@atomfair.com for customization.

ATOMFAIR® 304/316L Stainless Steel Wave Springs
ITEM DESCRIPTION
Product Name ATOMFAIR® 304/316L Stainless Steel Wave Springs
Spring Type Wave Spring (Belleville)
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 5 N–30 N
Large Contact Area
Small Footprint
Fatigue Life ≥10,000 cycles
304: General Corrosion Resistant
316L: Sulfide/Chloride Ion Corrosion Resistant, High Temperature Resistant
Optimal Application Scenarios Most routine testing, thin electrodes, low-loading batteries; universal preferred choice
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 most routine electrochemical testing, thin electrodes, low-loading batteries, and all systems requiring stable cell internal pressure with superior corrosion resistance.
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 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®

The wave spring must be selected with a force range (5-30 N) compatible with the target cell's internal pressure requirements to ensure stable operation. The 316L variant is required for cells containing sulfide or chloride electrolytes due to its enhanced corrosion resistance, while the 304 variant suits general environments.

  • Force Range Constraint: The spring force must remain within the specified 5-30 N range to avoid over-compression or insufficient contact in the assembled cell.
  • Material Compatibility Constraint: Select the 316L variant for cells with sulfide or chloride-containing electrolytes to prevent corrosion, and the 304 variant for standard electrolytes.
  • Fatigue Life Constraint: The spring is rated for at least 10,000 cycles under typical operating conditions without significant force degradation.
  • Dimensional Compatibility Constraint: The default dimensions (15.4 x 1.1 mm) are designed for CR2032 cell internal dimensions; custom sizes require verification of fit.

Should I select 304 or 316L stainless steel wave springs for coin cell assembly with sulfide-based electrolytes?

For sulfide-based electrolytes, choose the 316L variant because it offers enhanced sulfide and chloride ion corrosion resistance and high-temperature tolerance. The 304 variant provides high mechanical strength and general corrosion resistance but is not specifically engineered for aggressive sulfide environments. Both variants deliver a spring force range of 5 N to 30 N and a fatigue life of at least 10,000 cycles.

Are these wave springs compatible with CR2025 coin cell housings, or only with CR2032?

Yes, these wave springs are compatible with all CR20 Series coin cells, including CR2025 and CR2016, because those share the same internal diameter as CR2032. The default spring dimensions are 15.4 × 1.1 mm, fitting the internal diameter of the CR20 series. However, the free height of 1.1 mm must be accommodated in the overall stack design of the cell.

What handling precautions are needed to preserve the electrochemical compatibility of these wave springs?

Handle the springs carefully to avoid mechanical deformation because dimensions are controlled within ±0.02 mm and any damage could create uneven pressure. Keep the contact surface free of contaminants to preserve the verified electrochemical stability range of -0.5 V to 5.0 V, which ensures no side reactions with battery components.

This ATOMFAIR wave spring delivers a spring force range of 5–30 N with a fatigue life of ≥10,000 cycles, available in 304 or 316L stainless steel. It is precision-machined to ±0.02 mm tolerance for CR20 series coin cells, with electrochemical compatibility verified across –0.5 V to 5.0 V, making it suitable for routine battery testing and low-loading electrode configurations.

Positive

  • High fatigue life and corrosion options: Fatigue life ≥10,000 cycles ensures long-term mechanical stability; 316L variant provides enhanced resistance to sulfide and chloride ions at elevated temperatures.
  • Precision tolerance and electrochemical compatibility: Dimensions controlled within ±0.02 mm for consistent assembly; rigorous cyclic voltammetry confirms no side reactions within –0.5 V to 5.0 V, eliminating interference with battery test results.

Trade-offs

  • 304 variant lacks specified high-temperature tolerance: The 304 stainless steel option is not explicitly rated for high-temperature resistance, which may limit its use in elevated-temperature experiments compared to the 316L variant.
  • Default dimensions limited to CR20 series: The standard 15.4 × 1.1 mm size fits only CR2032 and compatible CR20 series internal dimensions; other battery formats require custom order.

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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