Stainless steel strip for battery contacts
Contact springs and tabs for battery packs.
Battery contacts
Contact springs, tabs and plates that connect the cells and carry current in battery compartments and battery packs. Elasticity, corrosion resistance and dimensional stability are required.
Contact springs and tabs must deliver a steady force over time and connect reliably to the cells, often by resistance or laser welding. In both cases uniform thickness and a clean surface are decisive for repeatable joints. 3S supplies work-hardened 2H stainless strip for contact springs and 2R/BA strip for tabs, in thin gauges and widths from 3 mm, with EN or ASTM tolerances and 100% dimensional control. Every batch is traceable and, on request, accompanied by a 3.1 certificate. Spools with parallel or traverse winding feed automated stamping lines directly.
Where it is used
- Battery packs for electric mobility
- Cordless power tools
- Portable devices
- Energy storage systems
Recommended grades
Supply
| Parameter | Range | Notes |
|---|---|---|
| Typical grades | AISI 301 and 304 work-hardened (1/4 – 1/2 – full hard), AISI 304 and 316L bright annealed (BA) | Other grades on request |
| Thickness | Annealed 0.05 – 0.70 mm Work-hardened 0.05 – 2.50 mm | Typical for this application: 0.10 – 0.50 mm |
| Width | 3 – 1250 mm | Typical: 10 – 60 mm |
| Finishes | Annealed 2R / BA • Work‑hardened 2H | Calibrated mechanical properties |
| Formats | Strip • Narrow strips • Spools • Sheets | Sheets cut to size up to 1000 mm |
| Spools | From 15 kg to 1500 kg | ID 50–400 mm • traverse or parallel winding |
Tolerances according to EN ISO 9445 or customer specification. 3.1 certificates on request.
Frequently asked questions
Request a quoteIs your strip suitable for resistance or laser welding?
How is material traceability ensured?
How can I get a quote?
Tell us the alloy, finish, thickness, width, edge and format (strip/narrow strip/spool) and we will send you a quick quotation.