Quick Answer: It's generally not a good idea to put stainless steel in the microwave. There are some caveats, but for the most part, it's safest to assume that you shouldn't put any type of stainless steel in the microwave. We're going to explain exactly why below.
First, let's learn a bit more about stainless steel...
What Is Stainless Steel?
We hear about stainless steel all the time. The rims on your car tires might be stainless steel.
Other common places stainless steel can be found are:
- Medical equipment
- Prescription glasses
- Coffee thermoses
- Cooking tools
Stainless steel What makes it different from regular steel is that it's resistant to rust thanks to the chromium.
So why shouldn't you microwave stainless steel if you can cook with it?
Many metal objects aren't safe to put in the microwave because of their shapes and proximity to the walls and ceiling of the microwave.
This is why you shouldn't put a fork in the microwave—the metal tines are too close together and will likely create sparks.
Related Article: Can You Microwave Saran Wrap? (Your Guide for Safe Reheating)
When it comes to stainless steel objects, shape is definitely part of the equation.
However, it's absolutely safe to cook, bake and reheat in stainless steel cookware in the oven and on the stove.
For more on microwaves, we have compiled a list of the best microwave toaster oven combo.
Different Types of Stainless Steel Cookware
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How Do You Know If Stainless Steel Is Microwave Safe or Not?
Labels on Stainless Steel to Be Aware Of
Any item that can be placed in the microwave, whether it's a glass bowl or a ceramic mug, may have a label on the bottom that says "microwave safe." Any time you're unsure about a product, turn it over and look for this label. You may also see one that mentions that the item is not microwave-safe.
Some things are more likely than others to have the labels. Lots of plates, bowls and cups have the stamps, but other objects may not. It's always good practice to check.
Further Reading: Can You Microwave Starbucks Cups? (What You Need to Know)