Aluminium in 1945: Consumer metal
Read the condition on Aluminium before the nickname. Year 1945, line “Consumer metal,” figure 1970. Ductile, no ductile-to-brittle transition like BCC steels. A material is what it is made of, the condition it survives, and where it goes afterward. Aluminium under “Consumer metal” in 1945 should say which, with 1970 tied to the condition. A figure with no condition is a boast. Readers meet the name on the back of a product, so the code and the history should not share one sentence.
Scores compare Aluminium 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.
Aluminium (Al (+ Mg, Si, Cu, Zn…)) is a family of grades whose density 2.70 g/cm³, heat band 660 °C, and fire letter A1 as metal. Aluminium is sold as grades, not as a single substance. Chemistry Al (+ Mg, Si, Cu, Zn…), density 2.70 g/cm³, heat band 660 °C. This atlas treats Aluminium as a system: mill route, coatings, tests and the cavity it sits in.
Conductivity note: ~237 W/m·K (pure). Insulation score 12/100 is relative to 32 entries — metals lose, VIPs and aerogels win. Fire letter in editorial use: A1 as metal. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide. Origin: Hall–Héroult 1886, USA / France. The process chapter follows feedstock → conversion → forming → finish → install.
The label keeps Aluminium, 1945, and 1970. “Consumer metal” is the condition on the figure.1945
Figures to keep
- Year of the condition
- 1945
- Property figure
- 1970
- Material
- Aluminium
- Use line
- Consumer metal
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