Which building materials are best?
Recode’s Kara Swisher takes a look at which building materials can be made in a lab, and which ones you really need to buy from the source.
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Aluminum alloy or aluminum-alloy steel The most common material in most construction is aluminum, and it’s also the most expensive.
But the good news is it’s actually cheap to make.
Most metal-alloys use the same basic process to make their own steel, but aluminum alloy is a different animal entirely.
You can make it yourself or buy it from manufacturers.