This document specifies a method to determine the coefficient of linear thermal expansion of carbonaceous or graphite materials (solid materials) for the production of aluminium between 20 °C and 300 °C. It applies to baked anodes and shaped carbon products.nd edition 2020-03 Carbonaceous products for the production of aluminium — Baked anodes and shaped carbon products — Determination of the coefficient of linear thermal expansion Produits carbonés utilisés pour la production de l'aluminium — Anodes cuites et produits carbonés formés — Détermination du coefficient de dilatation thermique Reference number ISO 14420:2020(E) ？ ISO 2020 ISO 14420:2