Wool in 15: Spanish merino

Scores compare Wool 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.

Wool (keratin protein) is a family of grades whose density ~1.31 g/cm³, heat band chars; does not melt-drip like PE, and fire letter better than commodity synthetics in many apparel tests. Wool is sold as grades, not as a single substance. Chemistry keratin protein, density ~1.31 g/cm³, heat band chars; does not melt-drip like PE.

This atlas treats Wool as a system: mill route, coatings, tests and the cavity it sits in. Conductivity note: low when lofted. Insulation score 72/100 is relative to 32 entries — metals lose, VIPs and aerogels win. Fire letter in editorial use: better than commodity synthetics in many apparel tests. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.