Annealed cast ironBlack annealed cast iron (GTS, GJMB) Brass, Bronze, Case-hardened steels, Cast iron, Cast steel, Copper, Grey/nodular cast iron (GG/GJL, GGG/GJS)Hard aluminium alloys Hardened, heat-treated steels over 1.200 N/mm² (< 38 HRC)Hard non-ferrous metal, Stainless steel (INOX)Steel, Steel, cast steel, Steels over 700 N/mm² (> 220 HB)Steels up to 1,200 N/mm² (< 38 HRC)Steels up to 700 N/mm² (< 220 HB) Titanium, Titanium alloys, Tool steels, White annealed cast iron (GTW, GJMW)Zinc