Quick Answer

Yes, some metal is safe in a microwave, but not all. Thin metal like aluminum foil can cause sparks, while thick, smooth metal like the Breville 13" Non-Stick Pizza Pan is safe in traditional ovens and some countertop ovens. Always check your appliance manual first.

Why Does Metal Spark in a Microwave?

Microwaves work by emitting electromagnetic waves that excite water molecules. When these waves hit metal, they can create an electric current. If the metal is thin or has sharp edges, the current can arc and cause sparks—this is why crumpled foil or metal twist ties are dangerous. However, thick, smooth metal with no sharp points (like the sides of a microwave cavity) is usually safe because it reflects the waves without arcing.

Which Metals Are Safe and Which Are Not?

Smooth, thick metal containers designed for microwave use are generally safe. For example, the Breville 13" Non-Stick Pizza Pan is intended for use with Breville Smart Ovens and traditional ovens—not microwaves. But many countertop microwave ovens have metal racks that are safe because they are designed for that purpose. Avoid thin metal, foil, metal-trimmed dishes, and any metal with sharp edges or points. When in doubt, use microwave-safe glass or ceramic.

Myths vs. Facts

  • Myth: Any metal in a microwave will cause sparks and damage.: Fact: Smooth, thick metal like the interior walls of a microwave or specially designed metal racks are safe. Sparks occur with thin, sharp, or pointed metal. Check your appliance manual for approved metal accessories.
  • Myth: You can never put aluminum foil in a microwave.: Fact: Some manufacturers allow small, smooth pieces of foil to shield areas of food, but only if the foil is flat and not touching the walls. Crumpled foil is dangerous. Use foil only if your microwave manual explicitly permits it.
  • Myth: Metal in a microwave always ruins the appliance.: Fact: A single spark may not cause permanent damage, but repeated arcing can pit the interior or damage the magnetron. Always stop the microwave if you see sparks. If you see sparks, turn off the microwave and remove the metal immediately.

Product Facts

  • 13" Non-Stick Pizza Pan: 13" non-stick pizza pan that doubles as a baking sheet. Designed for use with the Breville Smart Oven™ BOV800XL, the Smart Oven™ Plus BOV810BSS, Smart Oven™ Pro BOV845BSS, and the Smart Oven™ Air BOV900BSS. The pizza pan may also be used with traditional household ovens. This pan is made of thick, smooth metal with a non-stick coating, making it safe for conventional and convection ovens but not for standard microwave ovens. Always match your cookware to the correct appliance type.