Explanatory notes
… Copper is permitted in a proportion greater than 0.1 % but not more than 0.2 %, provided that neither the chromium … in fused cryolite (the latter is sodium aluminium fluoride, but it acts solely as a solvent). This electrolysis is … favour their wide use : in the aircraft, automobile or shipbuilding industries; in the building industry; in the …Legal note
… Copper is permitted in a proportion greater than 0.1 % but not more than 0.2 %, provided that neither the chromium …