This category includes a variety of discarded industrial equipment and components, often characterized by signs of wear and rust. Common items in this category may include:

1. Engines and Motors: Used engines from vehicles or heavy machinery, often stripped of useful parts.

2. Metal Frames and Chassis: Sturdy metal structures from old equipment, sometimes featuring remnants of paint and labels.

3. Gears and Bearings: Various sizes of gears, pulleys, and bearings that may be corroded or worn but can still hold value for recycling.

4. Conveyor Belts and Hoses: Lengths of worn belts or hoses, often made from rubber or metal composites, suitable for repurposing.

5. Electrical Components: Wiring, switches, and circuit boards that may contain valuable metals like copper.

6. Sheet Metal: Scraps of metal sheets, often used in construction or manufacturing, showing signs of oxidation.

7. Hydraulic Parts: Components from hydraulic systems, such as cylinders and pumps, typically covered in grease and grime.

This scrap can be valuable for recycling, salvage, or repurposing in creative projects, making it a resource for both industrial and artistic endeavors.