木材 is one of 32 materials in this atlas, grouped under ceramics: history, structure, measured properties, process routes, uses, safety and market — not a product catalogue.
Scores compare 木材 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.
深く読む
木材 (cellulose–hemicellulose–lignin) is a family of grades whose density 0.3–0.8 g/cm³ typical, heat band chars ~200–300 °C; does not melt, and fire letter D–B depending on product / treatment.
木材 is sold as grades, not as a single substance. Chemistry cellulose–hemicellulose–lignin, density 0.3–0.8 g/cm³ typical, heat band chars ~200–300 °C; does not melt.
This atlas treats 木材 as a system: mill route, coatings, tests and the cavity it sits in.
Conductivity note: ~0.1–0.2 W/m·K along vs across grain. Insulation score 56/100 is relative to 32 entries — metals lose, VIPs and aerogels win.
Fire letter in editorial use: D–B depending on product / treatment. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.
Origin: Palaeolithic tools; CLT 1990s Austria, Global forests / Graz. The process chapter follows feedstock → conversion → forming → finish → install.
Uses span buildings to defence / safety. Pairings matter: steel.
Producers below are landmarks, not an endorsement ranking. Prices are bands, not live quotes.
Circularity mark 76/100. Ask which scrap, which certificate, which year.
Japan · 7th c.
Hōryū-ji is a reference point in the public image of 木材.
Norway · 12th c.
Stave church is a reference point in the public image of 木材.
United States · 1830s
Balloon frame is a reference point in the public image of 木材.
Austria · 1990s
CLT panel is a reference point in the public image of 木材.
United Kingdom · WWII
Mosquito bomber is a reference point in the public image of 木材.
Europe · 20th c.
Glulam arch is a reference point in the public image of 木材.
Japan · ritual
Ise shrine rebuild is a reference point in the public image of 木材.
Europe · age of sail
Oak ship is a reference point in the public image of 木材.
アイコンのオンオフで、棒が選択内の首位に合わせて再スケールされる。
同じ家族、違う点数 — 一戦を選ぶ。
六軸で最も近い隣人 — 強度、耐熱、火災、断熱、加工性、循環性。