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Help CenterMR Tinplate Steel Sheet SPCC Electrolytic 0.20mm for Consumer Electronic Battery Shell Components
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We are Shandong Sino Steel Co., Ltd., a manufacturer with a 10,000–30,000 square meter production facility and 101–200 employees. Our MR tinplate steel sheet SPCC electrolytic 0.20mm is engineered for the exacting needs of consumer electronic battery shell components, combining consistent thickness, clean surface, and reliable corrosion resistance. This product supports high-speed stamping and deep drawing, helping you produce battery shells with precision and repeatability.
Product Overview
MR tinplate is a steel grade with low residual elements, which improves weldability, ductility, and corrosion behavior. The SPCC substrate is a cold-rolled steel base that receives an electrolytic tin coating on both sides. This 0.20mm MR tinplate steel sheet is developed for consumer electronic battery shell components, where thin, tough, and corrosion-resistant materials are essential. The combination of MR steel chemistry and SPCC processing gives a very stable matrix for forming processes. Battery shells made from this material can be produced with smooth edges, consistent hardness, and dependable barrier properties.
Material Quality
MR designation means the steel contains low levels of residual elements, making it more consistent during forming and coating. SPCC is a well-known cold-rolled steel grade with a clean surface and uniform mechanical properties. When these two characteristics are combined in an electrolytic tinplate product, the result is a material that can be stamped into complex battery shell geometries with minimal defects. The electrolytic tin layer is applied through an electrochemical process, which creates a dense and uniform coating that adheres strongly to the steel base. This is particularly important for battery shells that must resist electrolyte leakage and external corrosion over a long service life.
Surface and Precision
Battery shell production requires a surface that is free from scratches, rust, and severe oil residue. Our MR tinplate is manufactured with careful surface inspection, and each coil is processed to maintain a clean appearance. The 0.20mm thickness is held within a narrow tolerance so that stamping dies fill consistently and component weight stays stable. A consistent flat surface also reduces the need for secondary grinding or polishing, which saves production time and lowers costs.
- Precise thickness: 0.20mm nominal thickness with tight tolerances for battery shell stamping.
- Uniform tin coating: electrolytic tin layer provides dependable corrosion resistance and good solderability for electronic assembly.
- Strong formability: MR / SPCC base material is selected for deep drawing and multistage stamping without cracking.
- Clean surface: smooth surface finish reduces tool wear and allows consistent production.
- Dimensional stability: consistent mechanical properties support high-volume manufacturing.
- Wide compatibility: available in sheet or coil and can be customized for different battery shell sizes.
- Battery-grade reliability: optimized for consumer electronics, including rechargeable battery housings and button cell components.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product type | MR electrolytic tinplate steel sheet |
| Base material | SPCC cold-rolled steel |
| Grade | MR |
| Thickness | 0.20 mm |
| Coating | Electrolytic tin |
| Surface finish | Smooth / bright, optional matte upon request |
| Width / size | Customizable |
| Form | Sheet or coil (available upon request) |
| Application | Consumer electronic battery shell components |
| Packaging | Standard export packing |
| Shipping ports | Qingdao, Tianjin, Shanghai |
Why Choose MR Tinplate for Battery Shells?
Battery shells need to hold shape under mechanical stress while preventing electrolyte leakage. MR tinplate offers low permeability and strong resistance to corrosion. Unlike ordinary cold-rolled steel, the tin layer acts as a barrier against moisture and corrosive substances. The 0.20mm thickness also provides enough stiffness for the shell while remaining light enough for compact consumer devices. This material is used in lithium-ion battery cover shells, alkaline battery casings, and other electronic power sources.
Processing Characteristics
Our MR tinplate steel sheet is designed to work smoothly with conventional stamping presses. During deep drawing, the material elongates evenly and resists thinning at corners, which minimizes breakage. In fabrication, the electrolytic tin coating gives stable surface lubrication properties, and it can be washed and dried without leaving stains. For additional operations such as welding or soldering of battery terminals, the tin coating supports reliable joining. The product is shipped with protective packaging to prevent scratching and oxidation during transit.
Product Advantages
- Consistent quality: every coil is inspected during processing and before shipment.
- Cost-effective: MR tinplate is a dependable material for high-volume battery shell production.
- Supply reliability: established export process from major ports.
- Technical support: our team can help you choose appropriate widths and packaging.
Shandong Sino Steel Co., Ltd. as Your Supplier
Shandong Sino Steel Co., Ltd. started production in 2018 and has grown into an export-oriented manufacturer with an overseas office. Our factory area covers 10,000–30,000 square meters, and our team includes 101–200 employees. We have documented quality management and audit practices aligned with ISO9000 and ISO19011:2000. Our annual export value is between US$2.5 million and US$5 million, and we ship through Qingdao, Tianjin, and Shanghai. We serve clients across North America, South America, Eastern Europe, Southeast Asia, Africa, the Middle East, Eastern Asia, Western Europe, Northern Europe, Southern Europe, and South Asia. When you choose our MR tinplate steel sheet SPCC electrolytic 0.20mm, you are backed by a production team focused on consistency, on-time delivery, and clear communication. Contact us today for a quote or sample request.
Frequently Asked Questions
Q1: What does MR mean in tinplate?
A: MR is a tinplate steel grade with low residual elements such as copper and chromium. This grade is often preferred for battery shell components because it offers better corrosion resistance and formability.
Q2: Is 0.20mm thickness suitable for battery shell stamping?
A: Yes, 0.20mm is a common thickness for consumer electronic battery shells. It provides a good balance of strength and ductility, and the SPCC substrate helps the material form cleanly during deep drawing.
Q3: Can you supply sheets with custom widths?
A: Yes, we can customize width and sheet sizes according to your stamping dies or production requirements. Please confirm your exact dimensions when making an order.
Q4: How is the tin coating controlled?
A: The electrolytic tin coating is applied on a controlled line to achieve a uniform layer. The target coating weight can be adjusted according to application needs, and detailed specifications are available upon request.
Q5: What packaging is used for export?
A: Standard export packing includes protective wrapping, moisture-proof materials, and sturdy steel or wooden supports. Shipments can be made from Qingdao, Tianjin, or Shanghai.
Q6: Do you offer samples before bulk ordering?
A: Yes, sample orders are welcome. Contact us with your dimensions and quantity, and our sales team will provide a suitable sample proposal.
Q7: Can this product be used for other electronic components?
A: Yes, besides battery shells, MR tinplate is often used for capacitor cases, terminal shields, and small electronic enclosures. Its corrosion resistance and solderability make it versatile.
Q8: What quality system does the company follow?
A: Our company has implemented quality management practices aligned with ISO9000 and ISO19011:2000 requirements. We also perform internal inspections and maintain records for traceability.
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