Tin Free Steel (TFS) / Blackplate

Tin Free Steel (TFS) is thin black plate with two coats; one of metal chrome film and the other of chromium oxide. TFS is ideal for the manufacturing of crowns, container ends & shallow drawn cans etc. TFS is also known as Chromium coated steel.

Features of TFS

• Chromium coated
• Corrosion Resistant
• Easier to recycle.
• Sulphur Blackening Resistance: TFS has sulphur resistance properties, which can be used for canning protein- rich food such as fish.
• Filiform Rust Resistance: Filiform is superficial corrosion of the base metal. TFS has a superior base metal which makes it corrosion resistance.
• Coating: The coating in TFS is not amphoteric (having the characteristic of an acid and a base, is a compound that can react as either an acid or a base). This means that detergents and dispersion colors can be packed easily.
• Paint Adhesion : TFS possesses better paint adhesion properties, thus making it ideal for DRD cans and adhesive bonded cans.
• Weldability: TFS can be welded when metallic coating layers are removed by edge grinding.

TFS should be Lacquered / Coated to prevent rust in humid condition.
Internal Coating / Lacquering can be avoided in the case of TFS used to store motor oil or cooking oil.