LEGO primarily uses ABS plastic for most of its bricks.
The Primary Material: ABS Plastic
According to the provided reference, since 1963, the majority of LEGO pieces have been manufactured using a high-quality plastic known as ABS.
ABS stands for Acrylonitrile Butadiene Styrene. This specific type of plastic is chosen for several key reasons, which contribute to the iconic feel and function of LEGO bricks:
- Unique Connective Grip (Clutch Power): ABS provides the distinctive "clutch power" that allows LEGO bricks to hold together firmly while still being able to be taken apart.
- High Gloss and Colors: It gives the bricks the vibrant colors and shiny finish they are known for.
- Safety, Durability, and Quality: ABS meets a comprehensive list of safety, durability, and quality standards, ensuring the toys are safe for children, withstand play over time, and maintain their structural integrity.
While ABS is the main material for the classic interlocking bricks, The LEGO Group also uses other types of plastic and materials for different elements, such as flexible pieces or specialized components, as well as exploring sustainable alternatives for the future. However, ABS remains the cornerstone material for the core building system.