BS EN 10202 discusses cold reduced tinmill products with a focus on electrolytic tinplate and electrolytic chromium/chromium oxide coated steel. BS EN 10202 specifies requirements for tinmill products in the form of sheets or coils. Tinmill products consist of single and double reduced low carbon mild steel electrolytically coated with either tin (tinplate) or chromium/chromium oxide (ECCS) or (ECCS-RC).
Single reduced tinmill products are specified in nominal thicknesses that are multiples of 0,005 mm from 0,16 mm up to and including 0,49 mm. Double reduced tinmill products are specified in nominal thicknesses that are multiples of 0,005 mm from 0,12 mm up to and including 0,29 mm. BS EN 10202 applies to coils and sheets cut from coils in nominal minimum widths of 600 mm.
BS EN 10202 on electrolytic tinplate and electrolytic chromium/chromium oxide coated steel is useful for:
The tin coating is stripped from tinplate by immersion in Clarke’s solution, followed by cleaning and drying. BS EN 10202 provides a method that covers the determination of chromium on tinplate with the use of diphenylcarbazide. BS EN 10202 is applicable to electrolytic tinplate that has been passivated in an electrolyte containing chromium ions. BS EN 10202 provides a method that covers the determination of Titanium content in the Ti/Zr- passivation layer with the use of Inductively Coupled Plasma.
BS EN 10202 lays out a method that covers the determination of chromium present as oxides and hydroxides on the surface of untreated chromium coated steel.
BS EN 10202:2022 supersedes old, which is withdrawn. BS EN 10202:2022 includes some technical changes with respect to old.
These include:
EN 10202