alloyage
/əˈlɔɪɪdʒ/ /ˈalɔɪɪdʒ/noun
The action or process of alloying metals.
Origin
Late 18th century; earliest use found in Robert Kerr (1757–1813), scientific writer and translator. From alloy + -age, originally after French alliage, in later use probably after French aloyage.