Nitinol in 1990s: Self-expanding stents

Near-equiatomic Ni–Ti that remembers shape and super-elasticates — stents, orthodontics and actuators. Nitinol is one of 32 materials in this atlas, grouped under advanced: history, structure, measured properties, process routes, uses, safety and market — not a product catalogue.

Scores compare Nitinol 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.

Nitinol (NiTi (~50/50 at.%)) is a family of grades whose density ~6.45 g/cm³, heat band ~1310 °C, and fire letter A1 metal. Nitinol is sold as grades, not as a single substance. Chemistry NiTi (~50/50 at.%), density ~6.45 g/cm³, heat band ~1310 °C. This atlas treats Nitinol as a system: mill route, coatings, tests and the cavity it sits in.