Stainless steel in 1912: Strauss–Maurer 18/8

Chromium passive films that keep kitchens, chemical plant and façades from rusting like carbon steel. Stainless steel is one of 32 materials in this atlas, grouped under metals: history, structure, measured properties, process routes, uses, safety and market — not a product catalogue.

Scores compare Stainless steel with the rest of the atlas on strength, heat, fire behaviour, insulation, workability and circularity. They are editorial, not certificates. Seven chapters follow. Fire and insulation claims name test families (Euroclass, ASTM E84, ISO 5660, KS F) rather than inventing a single safety number.

Stainless steel (Fe–Cr–Ni (±Mo, N, C)) is a family of grades whose density ~8.0 g/cm³, heat band ~1400–1450 °C, and fire letter A1 metal. Stainless steel is sold as grades, not as a single substance. Chemistry Fe–Cr–Ni (±Mo, N, C), density ~8.0 g/cm³, heat band ~1400–1450 °C. This atlas treats Stainless steel as a system: mill route, coatings, tests and the cavity it sits in.