5.6/5.6 Heavy-Duty Electrolytic Tinplate Sheet for Industrial Can Lids

This 5.6/5.6 heavy-coating electrolytic tinplate sheet in T4 temper is engineered for the most demanding industrial can lid stamping applications. With a robust tin coating mass of 5.6 g/m² on both surfaces, this material provides superior barrier protection against aggressive chemicals, solvent-based products, and corrosive industrial contents that would rapidly degrade standard tinplate packaging.

Maximum Corrosion Protection

• 5.6/5.6 g/m² Dual-Sided Heavy Coating: Twice the tin mass of standard 2.8/2.8 specifications, creating a substantially thicker sacrificial barrier that dramatically extends service life in corrosive environments. Verified by accelerated salt spray testing exceeding 48 hours without base metal exposure.
• Chemical Resistance: Superior resistance to mild acids, alkalis, organic solvents, and petroleum-derived products commonly packaged in industrial containers. The dense, uniform tin layer prevents pitting corrosion and hydrogen evolution at coating discontinuities.
• Sulfur Stain Resistance: The increased tin thickness provides enhanced protection against sulfur staining from protein-rich and sulfur-containing industrial formulations, maintaining container appearance and integrity throughout the product shelf life.

T4 Temper for Industrial Applications

T4 temper (HR30T 58-64) offers elevated hardness and yield strength compared to T3 grades, providing the necessary structural rigidity for larger-diameter industrial lids (up to 300mm) that must withstand stacking loads, internal pressure variations, and rough handling during transport. This temper grade resists panel deflection and maintains hermetic seal integrity under challenging distribution conditions.

Application-Specific Configurations

Regulatory Compliance

Fully compliant with REACH Regulation (EC) No 1907/2006, RoHS Directive 2011/65/EU, and certified for UN dangerous goods packaging where applicable. Each production batch is accompanied by full material test certification including coating mass distribution mapping via XRF and electrochemical porosity testing.

Contact our industrial packaging specialists to discuss your specific chemical compatibility requirements, receive material samples for in-house qualification testing, or request a volume-based pricing proposal with lead time commitment.