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ATOMFAIR® a large pile of circular metallic 304 and 316L stainless steel conductive spacers on a white background.

304/316L Stainless Steel Conductive Spacers 15.8×0.5mm ATOMFAIR®

$122.00

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 research grade 304/316L stainless steel conductive spacers, 15.8×0.5 mm, tolerance ±0.02 mm, 1000 pcs/pack. Excellent flatness for uniform current distribution. Order now.

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Description

ATOMFAIR® 304/316L Stainless Steel Conductive Spacers

RESEARCH GRADE MATERIAL

Product Overview
Premium 304/316L stainless steel conductive spacers (15.8 × 0.5 mm) for battery research. Manufactured from high-grade stainless steel compliant with ASTM A240, featuring dimensional tolerance ±0.02 mm, superior flatness, and excellent corrosion resistance to ensure uniform current distribution across electrode interfaces. The 304 variant offers high mechanical strength and general corrosion resistance for most routine testing scenarios, while the 316L variant provides enhanced sulfide/chloride ion corrosion resistance and high-temperature tolerance for demanding electrochemical environments. 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 Conductive Spacers
ITEM DESCRIPTION
Product Name ATOMFAIR® 304/316L Stainless Steel Conductive Spacers
Material Options 304 Stainless Steel / 316L Stainless Steel (Compliant with ASTM A240)
Dimensions (Diameter × Thickness) 15.8 × 0.5 mm (Default)
Model Compatibility CR2032 (Compatible with all CR20 Series Internal Dimensions)
Packaging Specification 1000 Pieces/Pack
Core Performance Parameters Dimensional Tolerance ±0.02 mm
High Mechanical Strength
Superior Flatness for Uniform Current Distribution
304: General Corrosion Resistant
316L: Sulfide/Chloride Ion Corrosion Resistant, High Temperature Resistant
Optimal Application Scenarios 304: Most routine testing, aqueous batteries, low-to-medium voltage systems
316L: Sulfide solid-state batteries, high-voltage batteries, highly corrosive systems, long-term cycling tests
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 scenarios, aqueous batteries, low-to-medium voltage systems, sulfide solid-state batteries, high-voltage batteries, highly corrosive systems, and long-term cycling tests requiring uniform current distribution.
PACKAGING: 1000 pieces/pack. 100% dimensional inspection, flatness verification, surface quality inspection, 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®

What are the key differences between the 304 and 316L stainless steel variants for battery research applications?

Choose 304 for routine testing with aqueous batteries and low-to-medium voltage systems; select 316L for highly corrosive environments such as sulfide solid-state batteries, high-voltage systems, or long-term cycling tests. The 316L variant provides enhanced resistance to sulfide and chloride ions and higher temperature tolerance, while 304 offers general corrosion resistance. Both are manufactured to ASTM A240 standards.

How do the ±0.02 mm dimensional tolerances affect compatibility with CR2032 coin cells and current distribution?

The ±0.02 mm tolerance ensures a precise fit within CR2032 internal dimensions, eliminating assembly gaps and preventing uneven pressure across the electrode stack. The 15.8 × 0.5 mm spacer’s superior flatness guarantees uniform current distribution, which directly reduces experimental systematic errors in coin cell testing.

What precautions are needed when using these spacers in high-voltage or highly corrosive electrolyte systems?

For high-voltage or corrosive systems, select the 316L variant to leverage its sulfide/chloride ion resistance and high-temperature tolerance. The spacers have been electrochemically verified to cause no side reactions within a -0.5 V to 5.0 V range, so standard clean handling (e.g., gloved assembly) suffices; 316L ensures long-term stability without material degradation in aggressive electrolytes.

These 304/316L stainless steel spacers offer precision dimensional control (±0.02 mm) and verified electrochemical compatibility for CR20 series coin cells, with material variants suited to routine or corrosive/high-temperature testing environments. Their superior flatness ensures uniform current distribution, but users must select the correct material and note the standardized form factor.

Positive

  • Precision dimensional tolerance and flatness: Tolerance of ±0.02 mm and superior flatness guarantee uniform current distribution across the electrode interface, eliminating assembly gaps and uneven pressure.
  • Verified electrochemical compatibility: Constant potential polarization and cyclic voltammetry tests confirm no side reactions within -0.5 V to 5.0 V, ensuring no interference with battery performance results.

Trade-offs

  • Fixed coin cell form factor: Designed exclusively for CR2032 and CR20 series coin cells; not compatible with pouch, cylindrical, or other cell geometries without custom adaptation.
  • Default sizing limited to one dimension: Standard spacers are only 15.8 mm diameter × 0.5 mm thickness; alternative sizes, models, or materials must be custom ordered, requiring additional lead time and minimum order quantities.

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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