What is the difference between extruded and rolled aluminum strips?

Extruded aluminum strips are formed by forcing aluminum through a die, creating a specific profile or shape. This process results in a more uniform cross-section and can produce complex profiles. Extruded strips are stronger and have better dimensional stability due to the grain flow being aligned with the direction of the extrusion. Rolled aluminum strips, on the other hand, are created by passing aluminum between rollers to achieve the desired thickness and width. This method is more suitable for producing thin, wide strips and is less costly for simpler profiles. Rolled strips may have some residual stresses and are not as strong as extruded ones, but they are more flexible and can be used in applications requiring formability.