What is 304 Stainless Steel Wave Spring (Belleville Washers) for CR2032?

304 Stainless Steel Wave Springs, also known as Belleville Washers, are specialized spring components designed for CR2032 coin cell battery holders. These wave springs provide controlled preload forces, ensuring stable electrical contact and secure battery placement. Manufactured from 304 stainless steel (304SS), they offer excellent corrosion resistance, durability, and mechanical performance.

Chemical Properties and CAS Number

• Material Composition: 304 Stainless Steel (304SS)
• CAS Number: 12597-68-1 (Stainless Steel)
• Appearance: Metallic silver, thin wave-shaped washer
• Density: Approximately 7.93 g/cm³
• Corrosion Resistance: High resistance to oxidation and rusting
• Elasticity & Strength: High tensile strength, providing consistent force distribution
• Thermal Conductivity: 16.2 W/m·K

Applications of 304 Stainless Steel Wave Springs (Belleville Washers)

1. Coin Cell Battery Holders (CR2032 & Similar Sizes)

Used to maintain consistent battery contact, reducing electrical resistance and preventing movement inside the holder.

2. Electronics & Circuit Board Applications

Employed in PCB-mounted battery holders to ensure reliable power supply and longevity of electronic devices.

3. Medical & Wearable Devices

Applied in portable medical instruments and wearable electronics, where stable and long-lasting battery contact is critical.

4. Aerospace & Automotive Components

Utilized in vibration-resistant designs, ensuring secure battery contact in harsh environments like aerospace and automotive electronics.

5. High-Precision Mechanical Assemblies

Used in precision mechanical components, providing consistent preload forces in compact assemblies.

Pricing of 304 Stainless Steel Wave Springs

Prices vary based on material grade, thickness, and order quantity:

• Standard Grade: Typically ranges from $0.05 – $0.50 per unit
• High-Precision/Specialized Grade: Prices range from $1.00 – $5.00 per unit, used in aerospace, medical, and high-performance electronics.

Factors Influencing Wave Spring Prices

• Material thickness and grade (standard vs. high-precision)
• Surface treatment and additional coatings
• Bulk order discounts and manufacturer pricing
• Customization for specific battery models

Conclusion

304 Stainless Steel Wave Springs (Belleville Washers) for CR2032 coin cell batteries are essential components that provide stable electrical contact, vibration resistance, and long-term durability in battery-powered devices. Their high mechanical strength and corrosion resistance make them ideal for electronics, medical devices, automotive, and aerospace applications. Pricing depends on material quality, precision level, and order quantity.