WCO Explanatory Notes reproduced for reference. © World Customs Organization. Verify against official WCO publication.
72.03 - Ferrous products obtained by direct reduction of iron ore and other spongy ferrous products, in lumps, ellets or similar forms; iron having a minimum purity by weight of 99.94 %, in umps, pellets or similar forms. I' 7203.10 - Ferrous products obtained by direct reduction of iron ore 7203.90 - Other This headin covers ferrous products produced by reducing the ore without fusion (see the General Exp anatory Notes to this Chapter, Part (I) - (B). These products are obtained fiom ore in lumps or in granules or from concentrated ore in the form of briquettes or pellets. They usually contain more than 80 % by weight of metallic iron and have a s on structure sponge iron). They are used in the mufacture of steel. The products of this ea ing, in the o m of briquettes or pellets, should not be confused with those consisting of concentrated ores of heading 26.01; the former differ fiom the latter, notably, by the shiny appearance of their cut surface. k % F Z Ferrous products obtained by direct reduction are easily differentiated from other spongy ferrous roducts (obtained fiom molten pig iron by the atomisation techni ue) by the fact that the former has a rou h and porous surface, whereas the latter has a rounde surface showing clearly that it has gone t ough the molten state. k The heading also covers very pure iron (i.e., iron having an im wity content not exceeding 0.06 %). This iron, used in research laboratories and by certain ranches of the iron-working industry (e.g., in powder metallurgy), is a good diluent for metals. g The heading also excludes steel wool, etc., sometimes known as " steel sponge " (heading 73.23).
1.- In this Chapter and, in the case of Notes (d), (e) and (f) throughout the Nomenclature, the following expressions have the meanings hereby assigned to them : (a) Pig iron Iron-carbon alloys not usefully malleable, containing more than 2 % by weight of carbon and which may contain by weight one or more other elements within the following limits : - not more than 10 % of chromium - not more than 6 % of manganese - not more than 3 % of phosphorus - not more than 8 % of silicon - a total of not more than 10 % of other elements. (b) Spiegeleisen Iron-carbon alloys containing by weight more than 6 % but not more than 30 % of manganese and otherwise conforming to the specification at (a) above. (c) Ferro-alloys Alloys in pigs, blocks, lumps or similar primary forms, in forms obtained by continuous casting and also in granular or powder forms, whether or not agglomerated, commonly used as an additive in the manufacture of other alloys or as de-oxidants, de-sulphurising agents or for similar uses in ferrous metallurgy and generally not usefully malleable, containing by weight 4 % or more of the element iron and one or more of the following : - more than 10 % of chromium - more than 30 % of manganese - more than 3 % of phosphorus - more than 8 % of silicon - a total of more than 10 % of other elements, excluding carbon, subject to a maximum content of 10 % in the case of copper.