BS EN 10202:2001

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Information to be supplied by the purchaser
5 Designation
6 Manufacturing features
7 Coatings
8 Mechanical properties
9 Tolerances on dimensions and shape
10 Welds within a coil
11 Marking of differentially coated cold reduced
   tinplate
12 Sampling
13 Retests
14 Dispatch and packaging
Annex A (informative) Examples of steel types and
        chemical composition
Annex B (normative) De-tinning
Annex C (normative) Determination of chromium using
        the diphenylcarbazide method
Annex D (normative) Electromechanical method for
        determining tin coating mass
Annex E (normative) Methods for determination of
        metallic chromium and chromium in the oxide
        on the surface of electrolytic chromium and
        chromium oxide coated steel
Annex F (informative) The Rockwell Hardness test for
        routine determination of proof strength for
        double reduced materials
Annex G (informative) The springback test for routine
        determination of proof strength for double
        reduced material
Annex H (informative) Alternative marking system for
        differentially coated tinplate
Annex I (informative) List of corresponding former
        designations
Bibliography

Gives requirements for single and double cold reduced electrolytic chromium and chromium oxide coated steel in the form of sheets of coils for subsequent cutting into sheets. Covers references, definitions, designation, manufacturing features, specific requirements, chromium and chromium in oxide coating mass, mechanical properties, tolerances on dimensions and shape, joints within a coil, sampling, test methods, retests and dispatch and packaging.

This European Standard specifies requirements for tinmill products in the form of sheets or coils for subsequent cutting into sheets. Tinmill products consist of single and double reduced low carbon mild steel electrolytically coated with either tin (tinplate) or chromium/chromium oxide (ECCS). Single reduced tinmill products are specified in nominal thicknesses that are multiples of 0,005 mm from 0,17 mm up to and including 0,49 mm. Double reduced tinmill products are specified in nominal thicknesses that are multiples of 0,005 from 0,13 mm up to and including 0,29 mm.