IRON Alloy Phases

Iron alloy phases v • d • e
Ferrite (α-iron, δ-iron) Austenite (γ-iron) Pearlite (88% ferrite, 12% cementite) Martensite Bainite Ledeburite (ferrite-cementite eutectic, 4.3% carbon) Cementite (iron carbide, Fe3C)
Steel classes
Crucible steel Carbon steel (≤2.1% carbon; low alloy) Spring steel (low or no alloy) Alloy steel (contains non-carbon elements) Maraging steel (contains nickel) Stainless steel (contains ≥10.5% chromium) Weathering steel Tool steel (alloy steel for tools)
Other iron-based materials
Cast iron (>2.1% carbon) Ductile iron Gray iron Malleable iron White iron Wrought iron (contains slag)