Explanatory notes
… Notes. 1.‑ In this Chapter the following expressions have the meanings hereby assigned to them : (a) … sometimes coloured during these processes. * * * The hardness, toughness, etc., of aluminium can be very … or manganese. Certain of the alloys may be improved by age‑hardening treatments. These processes may be followed by …Legal note
… Subheading Notes. 1.‑ In this Chapter the following expressions have the meanings hereby assigned to them : (a) … containing by weight at least 99 % of aluminium, provided that the content by weight of any other element does not …