What types of abrasives fall under abrasive media classifications?

Abrasive media classifications refer to the various materials used to erode surface contaminants, prepare surfaces for coating, or create desired surface profiles on materials. The correct answer includes silica sand and ceramic grit, which are fundamental in abrasive blasting applications.

Silica sand is widely used for its ability to effectively remove rust, contaminants, and old coatings from metal surfaces, making it a common choice in surface preparation. Ceramic grit, known for its durability and sharpness, is often employed for finer finishing and faster cutting actions, making it ideal for preparing a variety of surfaces for coating adhesion.

In contrast, the other options listed do not fall within traditional classifications of abrasive media utilized for surface preparation and coating. Wood and plastic, rubber and foam, as well as paper and cardboard, are primarily used for non-abrasive applications or as cushioning and sanding materials, which serve different purposes and do not possess the necessary hardness or structure to be categorized as effective abrasives. This highlights the importance of understanding the specific properties and classifications of materials in the coatings inspection process.