Section 15 Base metals and articles of base metal 72 Iron and steel 72 04 Ferrous waste and scrap; remelting scrap ingots of iron or steel. 72 04 41 Turnings, shavings, chips, milling waste, sawdust, filings, trimmings and stampings.. Commodity Code Description 72 04 41 00 Turnings, shavings, chips, milling waste, sawdust, filings, trimmings and stampings..