Steel burrs are commonly used in coffee grinders and metal manufacturing. In coffee grinding, steel burrs produce a more uniform particle size, which can enhance the flavor profile of the coffee, especially for single-origin varieties. They are generally more durable than ceramic burrs, although they may wear down more quickly. In metal manufacturing, a burr refers to the rough edges or ridges formed on a metal piece during cutting operations, which can impact the quality and performance of the final product.
For coffee grinding, steel burrs are preferred for their consistency and ability to produce a clean mouthfeel in the brewed coffee. In contrast, ceramic burrs are less durable but can provide a different flavor profile.