Relates to standard coil grade cold-reduced electrolytic tinplate and cold-reduced blackplate, in both wide coil and slit coil, in nominal thicknesses from 0.20 mm to 0.60 mm, but does not apply to double-reduced material, or to material described as tinned steel strip, tinned steel sheets, cold-reduced steel strip or sheet in coil or TFS. It provides for steel types L, MR, stabilized and nitrogenized, and for four surface finishes for tinplate and two for blackplate. Composition, joints, tolerances, tin coating mass and identification are specified. Appendices cover purchasing guidelines, the iodine method for determining tin coating mass, Rockwell HR 30 T test values, line marking system for differentially-coated tinplate.