This document discusses different materials used for cookware and their properties. Stainless steel is corrosion resistant but a poor heat conductor. Aluminum transmits heat rapidly but should be avoided according to some sources. Copper is the best heat conductor but coatings can dissolve from acidic foods. Cast iron heats slowly but retains heat equally and is very durable. Carbon steel is ideal for woks and pans but susceptible to rust. Nonstick pans require little oil but the coating industry started with Teflon. Enamel prevents corrosion and holds heat efficiently. Tin protects copper pans from acidic foods reacting with the copper.