The Material Science of Kitchen Aluminum Foil: Thinness, Strength, and Utility
By
firephox
3h ago· 11 min readenInsight
Summary
A deep, articulate exploration of kitchen aluminum foil as a remarkable material — examining its physical properties (thickness, aspect ratio, work-hardening, impermeability), manufacturing process, and practical characteristics. The author reflects on foil's unique combination of thinness, strength, and utility, drawing connections to materials science and everyday engineering.
Source
Hacker NewsThe Material Science of Kitchen Aluminum Foil: Thinness, Strength, and Utilitydernocua.github.ioKey quotes
· 3 pulledKitchen aluminum foil is a remarkable material.
Despite their thinness, foils of 25 μm or more are impermeable to oxygen, water, and light, though Wikipedia claims thinner foils typically are plagued with pinholes.
It comes in a fully annealed state, so it rapidly work-hardens when bent.
Kragen Javier Sitaker, 02021-05-24 (updated 02021-09-11)
(14 minutes)
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