Karaca PowerSteel 3Ply 316 Steel 7-Piece Steel Cellular Cookware Set Properties The extra corrosion resistance provided by molybdenum is one of the most distinctive features of 316-quality stainless steel. The products in the Power Steel family contain 18/12 Carbon Nickel and 2 Molybdenum. 316 stainless steel becomes more resistant form against temperature with Mo. It provides more durability compared to 304 quality. 18 refers to the chromium content in stainless materials (E.g. 18% chromium). 12 refers to the nickel ratio..( E.g. 12% nickel) .A higher ratio means higher corrosion resistance. The Powersteel product line has 75 years of warranty. The Powersteel and 3 Ply family are suitable for use on induction cookers. Layers Outer Layer: Steel Suitable for use on induction cookers Middle Layer: Aluminum Inner Layer: 316 Steel Content 20 cm Pot (2.5 Liters) 24 cm Pot (4 Liters) 26 cm Low Pot (3 Liters) 26 cm Pan Material: 316 Steel Properties Suitable for use on induction cookers. 75 years warranty. Dishwasher-safe The set includes lids, 7 pieces in total (excluding the lid).