Tinplate Guide: Material Structure, BA & CA Annealing, Grades, Coatings and Applications
Tinplate is an electrolytically tin-coated, low-carbon steel widely used in food cans, beverage containers, chemical packaging, easy-open ends and decorative metal products. This guide explains tinplate structure, MR, L and D steel types, T1–T5 tempers, single-reduced and double-reduced grades, tin coating weights, surface finishes and internal lacquers. It also provides a detailed comparison of batch annealing (BA) and continuous annealing (CA), including why BA remains the mainstream annealing route for general-purpose soft-temper tinplate in China.
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