High-Strength TFS DR9 Tinplate Coils - TH415 to TH620 Hardness Grades for Food Cans Product Description: Electrolytic Tin Plate (ETP) and Tin Free Steel (TFS) represent advanced packaging materials engineered for superior performance in food and industrial applications. Our TFS DR9 tinplate coils feature exceptional high-strength characteristics with hardness grades ranging from TH415 to TH620, providing manufacturers with versatile solutions for demanding packaging