What “the material” actually is
銅 is sold as grades, not as a single substance. Chemistry Cu, density 8.96 g/cm³, heat band 1085 °C.
This atlas treats 銅 as a system: mill route, coatings, tests and the cavity it sits in.
基本データ
8.96 g/cm³Density
1085 °CMelting
~400 W/m·KK
100% by definitionIACS
A1 metalFire
metalsFamily
銅 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 銅 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
Deep dive: 銅
銅 (Cu) is a family of grades whose density 8.96 g/cm³, heat band 1085 °C, and fire letter A1 metal.
Heat, fire and insulation
Conductivity note: ~400 W/m·K. Insulation score 6/100 is relative to 32 entries — metals lose, VIPs and aerogels win.
Fire letter in editorial use: A1 metal. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.
How it is made and used
Origin: Chalcolithic / industrial electrorefining 1860s, Cyprus / global. The process chapter follows feedstock → conversion → forming → finish → install.
Uses span buildings to defence / safety. Pairings matter: aluminum.
Market and circularity
Producers below are landmarks, not an endorsement ranking. Prices are bands, not live quotes.
Circularity mark 78/100. Ask which scrap, which certificate, which year.
プロファイル
強度
40
耐熱
55
火災性能
76
断熱
6
加工性
88
循環性
78
七つの章
よくある質問
Is 銅 non-combustible?
Declared reaction class in this atlas: A1 metal. Assemblies still need resistance tests.
Does 銅 insulate?
Thermal mark 6/100 versus the atlas. Conductivity note: ~400 W/m·K.
What is the density band?
8.96 g/cm³
How is it made?
Origin story: Chalcolithic / industrial electrorefining 1860s (Cyprus / global).
Can it be recycled?
Circularity mark 78/100 — editorial, route-specific.
Typical melting or failure heat?
1085 °C
What should it be paired with?
aluminum: The lighter conductor when cross-section is free.
Where is it specified?
Buildings, transport, energy and consumer goods — see the uses chapter.
アイコン
Statue of Liberty skin
France / US · 1886
Statue of Liberty skin is a reference point in the public image of 銅.
Edison wiring
United States · 1880s
Edison wiring is a reference point in the public image of 銅.
IACS bar
International · 1913
IACS bar is a reference point in the public image of 銅.
Chuquicamata
Chile · 1910s–
Chuquicamata is a reference point in the public image of 銅.
Bronze Age palstave
Europe · 2nd mill. BCE
Bronze Age palstave is a reference point in the public image of 銅.
Heat pipe
Global · 1960s–
Heat pipe is a reference point in the public image of 銅.
Cu roof patina
Europe · historic
Cu roof patina is a reference point in the public image of 銅.
Busbar
Global · 20th c.–
Busbar is a reference point in the public image of 銅.
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。
5 / 8
対戦
同じ家族、違う点数 — 一戦を選ぶ。
近い素材
六軸で最も近い隣人 — 強度、耐熱、火災、断熱、加工性、循環性。