Can Stainless Steel Be Used in the Microwave? Here’s Why Stainless Gold and Stainless Ivory are Safe to Use

When people hear "stainless steel," they often assume it’s not microwave-safe. Traditionally, metal containers are avoided in microwaves due to the risk of sparking, uneven heating, or potential damage to the appliance. However, not all stainless steel is the same, and LocknLock's Stainless Gold is designed and tested to be safe for microwave use.

But how is this possible? Let’s break it down.

 

Why Is Traditional Stainless Steel Not Microwave-Safe?

Microwaves work by emitting electromagnetic waves that heat food by agitating water molecules. Metals, like stainless steel, reflect these waves instead of absorbing them. When the energy reflects back and concentrates at specific points, it can cause sparks, uneven heating, or even damage to the microwave itself.

However, not all metal objects react the same way in a microwave. Certain stainless steel designs, when engineered properly, can safely absorb microwave energy without creating dangerous reflections.

 

What Makes Stainless Ivory and Stainless Gold Microwave-Safe?

LocknLock’s Stainless Ivory and Stainless Gold containers are specially designed and tested to be microwave-safe, and here’s why:

✅ Material Composition Matters

Stainless Ivory and Stainless Gold are made from food-grade STS304 stainless steel, which has high corrosion resistance and stable thermal properties. This ensures it can withstand microwave heating without warping or releasing harmful substances.

✅ Innovative Structural Design

Unlike regular stainless steel containers, Stainless Ivory and Stainless Gold are engineered to prevent concentrated energy buildup. The smooth, rounded edges help distribute microwave energy evenly, avoiding arcing (sparking).

✅ Strict Testing for Safety Compliance

LocknLock has rigorously tested Stainless Ivory and Stainless Gold to meet microwave safety standards. Under specific conditions—such as microwaving one container at a time and ensuring proper placement—the product has proven safe and effective for reheating food.

 

How is Stainless Gold Tested for Microwave Safety?

At LocknLock, safety is our top priority. To ensure that Stainless Ivory and Stainless Gold meet the highest standards for microwave use, our containers have undergone rigorous laboratory testing. These tests confirm that Stainless Ivory and Stainless Gold do not cause sparking, remains structurally stable, and do not release harmful substances when used under proper conditions.

🔬 Test Report Highlights:

• Microwave Arc Testing – Ensures the stainless steel does not produce sparks when microwaved correctly.
• Food Safety Compliance – Confirms that no toxic substances are released when the container is exposed to high heat.
• Durability & Heat Resistance – Measures how well Stainless Ivory and Stainless Gold withstand repeated microwave use.

How to Safely Use Stainless Gold in the Microwave

To ensure safe usage and longevity of your Stainless Gold containers, follow these important guidelines:

1️⃣ Only Microwave One Container at a Time

• Microwaving multiple stainless steel containers together can cause microwave energy to reflect unevenly, increasing the risk of sparking.

2️⃣ Remove the Lid Before Microwaving

• The airtight plastic lid is not microwave-safe and should be removed before reheating. This prevents pressure buildup inside the container.

3️⃣ Ensure the Microwave Has a Rotating Turntable

• A working turntable ensures even heat distribution and prevents overheating on one side.

4️⃣ Do Not Microwave for More Than 5 Minutes at a Time

• Prolonged heating can lead to excessive energy absorption. Shorter intervals ensure even and safe reheating.

5️⃣ Do Not Microwave an Empty Container

• Always make sure there’s food or liquid inside to absorb microwave energy safely.

 

The Future of Food Storage: Safe, Stylish, and Sustainable

With Stainless Ivory and Stainless Gold, LocknLock is redefining how stainless steel containers can be used. Safe for microwaves, stylish in design, and built to last, it’s the perfect solution for busy lifestyles that need convenience without compromising safety.

Now, you can store, reheat, and enjoy meals all in one container—without worrying about harmful chemicals or transferring dishes.

Upgrade your food storage today with LocknLock Stainless —where innovation meets everyday convenience.

Would you like to experience the first-ever microwave-safe stainless steel for yourself? Shop now and bring effortless meal prep to your kitchen! Click here to shop our Stainless Gold Containers.