Bowls and feeding gear
Do stainless steel bowls rust?
Last updated 23 September 2026 · How we write and check this
Short answer
Genuine stainless steel, particularly food grade 18/8 or 18/10 steel, does not rust under normal washing and use, since the chromium content forms a protective layer that resists corrosion. Cheaper, lower grade steel bowls can occasionally show small rust spots over years of use, especially if scratched deeply or left wet against another metal surface for long periods.
What the numbers on quality steel mean
Food grade stainless steel is typically labeled 18/8 or 18/10, referring to the percentage of chromium and nickel in the alloy, and this composition is what gives it long term resistance to rust and corrosion. Bowls that do not specify a grade are more likely to be a lower quality steel more prone to spotting over time.
When rust spots do appear
Small orange or brown spots occasionally show up where a bowl has been scratched deeply, exposing a less protected layer underneath, or where it has sat wet against another metal object such as a rusting rack. This is more common with budget steel bowls than with quality food grade ones.
Keeping a steel bowl rust free
Drying the bowl after washing rather than leaving it to air dry in a puddle, and avoiding abrasive scouring pads that scratch the surface, both help a quality steel bowl stay rust free for years of daily use.
Key takeaways
- Genuine food grade stainless steel (18/8 or 18/10) resists rust under normal use.
- Lower grade or unlabeled steel bowls are more prone to occasional rust spots over years.
- Deep scratches and prolonged contact with wet metal can trigger rust even in decent steel.
- Drying the bowl and avoiding abrasive scrubbers helps prevent rust spots from forming.