Absolutely! A scratched finish on a metal outdoor bench is not a death sentence. In most cases, you can successfully touch it up to restore both the appearance and the protective layer. The method depends heavily on the original finish type.
For powder-coated benches (a durable, baked-on finish common on quality outdoor furniture), start by cleaning the scratched area thoroughly with mild soap and water. Let it dry completely. Use a fine-grit sandpaper to gently smooth any rough edges around the scratch. You can purchase aerosol or small brush-on powder coat touch-up paints that are color-matched. Apply thin, even layers, allowing each to dry as directed. For a more seamless blend, consider using a clear coat sealant over the top.
For painted metal benches, the process is similar. Clean and sand the area. Apply a rust-inhibiting primer if bare metal is exposed—this is crucial to prevent corrosion. Then, use an exterior-grade enamel paint that matches your bench's color. Multiple thin coats are better than one thick, globby coat.
The key is to act promptly. A scratch exposes the metal to moisture, leading to rust. While a DIY touch-up might not be invisible, it will significantly improve the look and extend the bench's lifespan. For extensive damage, consulting a professional refinishing service is recommended. With the right materials and a little patience, your bench can look great for many more seasons.