Tinplate

ArcelorMittal Dofasco produces a variety of Tin Plate products. These products are cold rolled once or twice and continuously annealed to produce Black Plate. The Black Plate can then be coated with a thin layer of tin or chromium through electrolytic deposition.

Tinplate is used in a variety of market applications including food cans, aerosol containers, and paint cans & solvents.

Black Plate

Black Plate is a light gauge, low carbon, cold reduced steel intended for use in the non-tinned state, for prepainting, or for the production of other Tin Mill Products dependent on end use corrosion protection requirements.

Single Reduced

Single Reduced product is cold rolled to the finished gauge, then continuously annealed and coated with a thin layer of tin.

Double Reduced

Double Reduced product is given a partial cold reduction to reach an intermediate gauge, then annealed and given another cold reduction to the final gauge prior to coating with tin. The resulting product is stiffer, harder, and stronger than single reduced, in some cases, allowing customers to utilize lighter gauge steel in their application.

Tin Free Steel

Electrolytic Chromium Coated plate or Tin Free Steel is a Tin Mill Black Plate product which has been coated with metallic chrome overlaid with film of chrome oxide by electrolytic deposition.

Tinplate Products

AM Dofasco produces a full range of tinplate, TFS (ECCS), and blackplate products as defined in the relevant ASTM specifications:

Qualities

ASTM A623/A623M General Requirements for Tin Mill Products
ASTM A624/A624M Electrolytic Tinplate
ASTM A625/A625M Black Plate, Single Reduced
ASTM A626/A626M Electrolytic Tinplate, Double Reduced
ASTM A650/A650M Black Plate, Double Reduced
ASTM A657/A657M Electrolytic Chromium, Single & Double Reduced

Coating Weights

Tinplate coating weights may be expressed in the traditional units of lb/base box or in SI units of g/m2. ArcelorMittal Dofasco can supply a full range of coatings from #5 (.5 g/m2) to #100 (11.2 g/m2). Differential coatings are also available.

Chrome Coated Steel, Tin Free Steel is available in the standard nominal coating of 5 mg/ft2 per side. ECCS is only available with one standard coating which is equal on both sides.

For general inquiries about tinplate, TFS (ECCS), and blackplate products please contact the ArcelorMittal Dofasco Sales Department.