Cold Rolled Steel Electrolytic Tinplate is a metal material that uses high-quality low-carbon cold-rolled steel as the base material and is evenly tinned on the surface through an electrolytic process. It combines the high formability of cold-rolled steel and the corrosion resistance of the tin layer, making it an ideal choice for food packaging and electronic components.
Cold Rolled Steel Electrolytic Tinplate Technical Parameters
|
Item |
Standard value |
Customizable range |
|
Tensile strength |
270-420MPa |
300-550MPa (DR material) |
|
Elongation (A80) |
≥25% |
≥15% (DR material) |
|
Hardness (HR30T) |
40-65 |
50-75 (high strength type) |
|
Surface roughness (Ra) |
0.4-1.2μm |
0.3-0.8μm (high gloss surface) |
|
Tin-iron alloy layer |
≤0.3g/m² (control weldability) |
Adjustable |
Cold Rolled Steel Electrolytic Tinplate features
Substrate type: MR steel (food grade)/L steel (high corrosion resistance)
Tinning process: electrolytic tinning (precise control of tin layer thickness)
Surface treatment: chromate passivation/chromium-free passivation (environmentally friendly)
Typical thickness: 0.15-0.50mm (customizable ultra-thin 0.10mm)
Tin layer thickness: 1.1-11.2g/m² (double-sided)
Cold Rolled Steel Electrolytic Tinplate Application areas
Food packaging:
Two-piece beverage cans (0.15-0.18mm)
Fish/meat cans (5.6-11.2g/m² high tin layer)
Milk powder cans (2.8/2.8g/m² differential thickness tin plating)
Electronic appliances:
Lithium battery shell (0.20mm high hardness)
Electromagnetic shielding cover (conductivity requirement ≥15% IACS)
Industrial use:
Chemical barrel lining (L steel base material)
Sealing cover (0.25mm+stone surface)
Industry Certifications
Food Safety: FDA 21CFR 175.300
Environmental Certification: RoHS 2.0/REACH SVHC
Quality Management: ISO 9001:2015
Packaging specifications
Standard roll: inner diameter 508mm, outer diameter 1200-1500mm
Protective measures:
Rust-proof paper wrapping
Steel strapping (tension ≥ 3kN)
Wooden pallet reinforcement
Common Problems
Problem 1: Poor soldering of tin layer
Solution: Control the alloy layer ≤ 0.3g/m², increase the welding current by 10-15%
Problem 2: Poor coating adhesion
Solution: Select stone grain surface (Ra ≥ 0.8μm) or perform chemical pretreatment
Problem 3: Edge rust during transportation
Solution: Add VCI anti-rust paper + edge protection packaging
About Us
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