International Aluminium Day: A Material Built for a Sustainable Future
Sustainability starts with the materials we choose and how we use them. On March 13, International Aluminium Day recognizes a material that continues to shape a more responsible and resilient future.
Aluminum stands apart for what it makes possible. It is strong yet lightweight, highly versatile, and uniquely capable of being recycled again and again without losing quality. It supports the systems we rely on every day while offering a path toward long term, sustainable use.
A few things you might not know:
Aluminum is the most abundant metal in the Earth’s crust
It makes up about 8% of the Earth’s crust by mass
It is the third most abundant element overall, after oxygen and silicon
Its natural abundance is only part of the story. What makes aluminum truly powerful is its ability to stay in use.
Why aluminum matters:
Infinite recyclability without loss of quality
Saves up to 92% of energy when recycled compared to primary production
Lightweight and durable
Supports critical industries like communication, construction, transportation, medical, defense, and aerospace
Essential to modern infrastructure and long term resource efficiency
At CASS, we believe how aluminum is made matters just as much as how it performs, which is why we produce low-carbon aluminum made from 100% recycled aluminum, operate a chlorine free process that avoids harmful chemicals, support critical infrastructure with U.S.-produced alloys, maintain a closed-loop approach that keeps materials in continuous use, and provide a tariff-resilient domestic supply that supports stability and long-term planning.
Sustainability is not a single action. It is a system built on responsible choices and long term thinking. When aluminum is produced and managed the right way, it keeps materials in use, supports critical industries, and reduces the need for new resource extraction. At CASS, we are committed to doing our part every day to move that system forward.