From soda cans and ladders to electrical wiring and airplane fuselages, countless products are made by aluminum companies. Along with steel, it’s become one of the world’s most widely used metals. While you’ve almost certainly used a product containing this metal below, we’ve compiled a list of seven facts about aluminum that may surprise you.
It Doesn’t Rust
Since it doesn’t contain iron, aluminum doesn’t rust. Only metals containing iron, including steel, can rust. This makes aluminum an attractive choice of material for outdoor applications where moisture is a problem. Aluminum products can withstand rain, sleet, snow and humidity without rusting.
It’s the World’s Most Abundant Metal
Consisting of about 8.2% of the Earth’s crust, aluminum is the world’s most abundant metal. Because there’s so much aluminum readily available, it typically costs less than other, less-common metals.
Aluminum is also recyclable, meaning aluminum products can be smelted down and reused in other applications. According to the Aluminum Association, it’s the “most recyclable of all materials.” When aluminum is recycled, nearly all of the metal can be reused without creating any waste. And the Aluminum Association notes that recycling just a single aluminum can saves enough energy to power an MP3 player while listening to entire album of songs.
It Weighs One-Third Less Than Steel
One of the reasons aluminum has become such a widely used metal in the manufacturing industry is because of its lightweight characteristics. On average, aluminum weighs one-third less than steel. If a block of steel weighs 100 pounds, for example, an aluminum block of the same size would weight just 33.3 pounds.
It Was Used Thousands of Years Ago
Some of the first documented uses of aluminum occurred thousands of years ago in Ancient Greece. Back then, people would dye their clothes with alum, which of course, contained aluminum. With that said, industrial production of aluminum as a metal didn’t begin until the late 19th century when the Heroult process was invented.
It’s Resistant to Heat
While lightweight, aluminum is highly resistant to heat. It will still smelt from a solid to liquid state when exposed to enough heat, but it takes temperatures in excess of 1,220 degrees Fahrenheit to smelt aluminum.
Aluminum is a ductile metal that’s easy to bend and shape. Using basic tools and minimal pressure, manufacturing companies can mold aluminum into the necessary shape for their respective applications. Its low ductility makes it ideal for forming and molding applications when compared to metals with a higher ductility.