Minerals and Metals in Ancient India v1.c20.s1.13

v1.c20.s1.13

Incontrovertible proof of deliberate carburization can be derived from objects made by laminating layers of iron of varying carbon contents, for there is no reason to make such a structure unless the different properties of the layers were understood. Maddin et al. (1977b: 14) reported that “the earliest known laminated object is an Egyptian knife from the Ramesseum which probably dates to 900-800 BC”.