History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c15.s2.23

c15.s2.23

shows that the metal was generally of great purity, sometimes reaching 99.7 per cent Bronze, containing 21-25 per cent. of tin was preferred for casting domestic utensils and other articles. This was due obviously to its easy fusibility ; as bronze containing 8-12 per cent. tin, which possesses much greater strength but higher melting point, was employed to a much less extent. Casting in closed moulds or *cire perdue* process was extensively practised.