Tillie Doyle
Stainless steel is a popular cookware material due to its strength, scratch resistance, and stylish appearance. But can you put stainless steel pans in the dishwasher? The answer is yes — most stainless steel cookware is dishwasher-safe and can be washed in the dishwasher repeatedly without damage. However, there are some exceptions and considerations to keep in mind. For example, if your stainless steel pans have wooden or plastic handles or lids, the high heat and moisture of the dishwasher may cause warping. Additionally, while stainless steel itself is durable and rust-resistant, certain types of stainless steel may become warped or corroded in the high-heat, high-pressure environment of the dishwasher. Therefore, it is always recommended to check the manufacturer's instructions and look for `dishwasher-safe` labels before putting your stainless steel pans in the dishwasher.
| Characteristics | Values |
|---|---|
| Safety | Stainless steel is one of the safest materials to put in the dishwasher |
| Durability | Stainless steel is rust-proof and durable, and can be washed in the dishwasher over and over again |
| Corrosion | Stainless steel is resistant to corrosion, but certain types of stainless steel can become corroded in the high-heat, high-pressure environment of the dishwasher |
| Tarnishing | Stainless steel might not tarnish, but if the pan has aluminium parts, the aluminium will tarnish in the dishwasher |
| Warping | Stainless steel is scratch-resistant, but other parts of the pan, such as wooden or plastic handles, might warp in the dishwasher |
| Aesthetics | Stainless steel pans can become discoloured in the dishwasher |
| Induction compatibility | Repeated use of the dishwasher can cause aluminium layers to degrade and result in a loss of induction compatibility |
| Performance | Pans can become less effective if the aluminium degrades sufficiently |
| Manufacturer's instructions | Most manufacturers will say it's ok to put stainless steel pans in the dishwasher, but always check the product packaging or manufacturer's instructions |
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What You'll Learn
Stainless steel pans with wooden or plastic handles
Stainless steel is a popular cookware material because it is strong, scratch-resistant, stylish, and stain-resistant. Stainless steel cookware can generally be put in the dishwasher, but there are exceptions.
If your stainless steel pans have wooden or plastic handles, these might not be suitable for the dishwasher. The high heat and moisture can damage or warp these features. Always check the product packaging or manufacturer's instructions before putting new cookware in the dishwasher. If you don't have the packaging, check the cookware brand website or their customer service centre. Some pans might have a symbol engraved on their base to indicate if they are dishwasher-safe.
If your stainless steel pan has a non-stick coating, this may be stripped off by dish soap or acidic food. Some people report that their stainless steel pans have become stained after being put in the dishwasher. However, these stains can be removed with baking soda, Barkeepers Friend, or vinegar and a clean cloth.
If your stainless steel pan has aluminium components, this may degrade and tarnish when exposed to strong detergents. This can impact the pan's thermal conductivity and cooking performance.
Handwashing your stainless steel pans can help them last longer. It also gives you full control over how clean your pan gets and prevents the use of harsh cleaning detergents that could be harmful to the pan or its coating. To handwash your stainless steel pan, wait until the cookware is cool, then soak it in hot, soapy water and use a sponge to lift grease and grime. If you have burnt your food, you can sprinkle the surface with baking soda, add water, and bring to a boil. Use a wooden spoon to help loosen the burnt food particles off the cooking surface.
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Corrosion and discolouration
Stainless steel pans can generally be put in the dishwasher, but there are some exceptions and caveats to be aware of. While stainless steel is designed to resist corrosion and rust, it is susceptible to discolouration and corrosion under certain conditions.
Firstly, it is important to understand the composition of your stainless steel pans. Most modern stainless steel pans are made of 304 (or 18/10) grade stainless steel, which contains 18% chromium and 10% nickel. These metals create a chromium oxide layer on the pan, making it resistant to corrosion, especially in wet or humid environments. Therefore, 18/10 stainless steel is non-reactive to dishwashing detergents and can be safely put in the dishwasher.
However, some stainless steel pans may be made of 18/0 stainless steel, which contains no nickel. Without the corrosion protection provided by nickel, 18/0 stainless steel may not be suitable for dishwashers. While 18/0 stainless steel cookware is rare in today's market, it is important to check the composition of your pans before putting them in the dishwasher.
Another important consideration is the construction of your stainless steel pans. Some pans, known as "cladded cookware," have a more complex construction, with layers of aluminium sandwiched between stainless steel. While stainless steel is usually dishwasher-safe, aluminium is not. If your stainless steel pans have an exposed aluminium rim or base cap, putting them in the dishwasher can cause the aluminium to degrade due to exposure to strong detergents. This can impact the pan's thermal conductivity, cooking performance, and even its safety.
Additionally, the high heat and corrosive environment of the dishwasher can cause discolouration and corrosion of your stainless steel pans. Stainless steel often contains chromium, which can create a colourful rainbow film on the pan when exposed to high heat and oxygen. While this discolouration is harmless, it may be unsightly and difficult to remove.
To prevent corrosion and discolouration of your stainless steel pans, it is recommended to hand wash them whenever possible. Hand washing gives you more control over the cleaning process and avoids exposing your pans to the harsh conditions of the dishwasher. By following manufacturer instructions and using the right cleaning methods and products, you can effectively clean your stainless steel pans while minimising the risk of corrosion and discolouration.
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Aluminium degradation
Stainless steel cookware can generally be put in the dishwasher, although there are some exceptions. For example, stainless steel pans with wooden or plastic handles or lid knobs may not be suitable for dishwashers because the high heat and moisture can damage or warp these features. Similarly, certain types of stainless steel can become warped or corroded in the high-heat, high-pressure environment of the dishwasher.
Cladded cookware is constructed with layers of aluminium sandwiched between stainless steel. While stainless steel is usually dishwasher-safe, aluminium is not and will start to degrade when in contact with detergents. Aluminium is amophoteric, meaning it dissolves in both strong bases and strong acids. Most dishwashing detergents are fairly alkaline, with a pH of 11 or 12, which is high enough to corrode aluminium. The aluminium surface dissolves as Na2Al(OH)4 (sodium aluminate), revealing the 'active' metal underneath, which reacts with the phosphates in the water to form aluminium phosphate. This process results in a powdery substance, sodium aluminium phosphate, depositing onto the aluminium surface.
To prevent aluminium degradation, some aluminium products are protected with a special type of clear coating or finish that allows them to be placed in the dishwasher. However, if aluminium products without this protective coating are placed in the dishwasher, the aluminium may tarnish or degrade sufficiently to impact the thermal conductivity and cooking performance of the cookware. Therefore, it is recommended to always check the manufacturer's instructions before putting aluminium products in the dishwasher.
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High heat and humidity
Stainless steel is widely considered to be one of the safest materials to put in the dishwasher. Most stainless steel pots and pans can be washed in the dishwasher repeatedly, and many manufacturers will say it's okay. Stainless steel is an alloy formed of iron and chromium, which creates an inert surface that protects the underlying metal from corrosion. This makes stainless steel cookware dishwasher-safe and virtually rust-proof.
However, there are some exceptions and caveats to be aware of. Firstly, it's important to check the manufacturer's instructions before putting stainless steel items in the dishwasher. Some pans may have a symbol engraved on their base to indicate if they are dishwasher-safe. If your stainless steel pans feature wooden or plastic handles or lid knobs, these might not be suitable for the dishwasher due to the high heat and moisture potentially damaging or warping these features.
Secondly, while stainless steel itself is usually dishwasher-safe, other metals like aluminium are not. If your stainless steel pan has an aluminium base cap or layers of aluminium sandwiched between stainless steel, it is not recommended to put it in the dishwasher as the aluminium will degrade when exposed to strong detergents. This can impact the pan's thermal conductivity and cooking performance.
Thirdly, while stainless steel is durable and scratch-resistant, it is not completely impervious to damage in the dishwasher. Solid food scraps should be removed from the pans before loading to prevent food particles from clogging the machine. It is also important to consider how you stack your dishwasher to avoid other metal items banging against the pans and potentially scratching the surface.
Finally, while stainless steel is generally dishwasher-safe, it might not be the best method for cleaning if you want your pans to last a lifetime. Handwashing stainless steel pans with a gentle cloth, mild detergent, and warm water can provide a gentle but thorough clean that keeps your pans in top condition. For stubborn stains, a paste made from equal parts baking soda and warm water can be effective without being abrasive to the stainless steel.
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Hand washing stainless steel
While stainless steel pans can be put in the dishwasher, hand washing is often recommended to keep them in good condition. Some pans may have wooden or plastic handles or lid knobs, which can be damaged or warped by the high heat and moisture of a dishwasher. Even if stainless steel pans are dishwasher-safe, they may be susceptible to pitting, discolouration, warping, loss of induction compatibility, and even rust over time.
To hand wash stainless steel pans effectively, it is important to let the pan cool down before cleaning, as subjecting a hot pan to cold water can cause thermal shock, potentially leading to warping or cracking. Warm water is more effective than cold water for cleaning, as it helps to break down oils and grease, making it easier to remove food particles and stains. Adding mild dish soap creates a gentle, sudsy solution that can help remove everything without harming the surface. For stuck-on food bits, fill the pan with enough soapy water to cover the residue, bring it to a boil, and scrape with a spatula or wooden spoon. The food should come away easily. Allow the pan to cool, then wash as usual.
For tougher messes, including burnt food or oil, a more abrasive cleaning method may be required. Adding a few spoonfuls of baking soda and enough water to cover the burnt areas, bringing to a boil, and simmering until the water evaporates can help to loosen burnt-on food. After turning off the heat, wait until the pan is cool enough to handle, then scrub away the buildup with a non-abrasive sponge and wash in hot, soapy water. Commercial cleaners, such as Bar Keepers Friend, can also be used to clean stainless steel pans, following the manufacturer's directions.
To prevent water spots, it is important to dry the cookware immediately after washing. Additionally, allowing refrigerated ingredients to sit at room temperature for 10 to 15 minutes before cooking can help prevent food from sticking to the pan. Preheating the pan before adding oil and waiting until the oil is hot before adding food can also help prevent sticking.
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Frequently asked questions
Yes, stainless steel is one of the safest materials to put in the dishwasher. However, it's important to note that not all stainless steel pans are created equal—some may be too thin or low quality and may not last long with repeated dishwasher cycles. Always check the manufacturer's instructions.
Stainless steel pans with wooden or plastic handles or knobs may not be suitable for the dishwasher as the high heat and moisture can damage or warp these features. It's also important to remember to remove any solid scraps from your pans before loading to keep food particles from clogging your machine.
While stainless steel itself is dishwasher-safe, some pans may have parts made of other metals like aluminum that are not dishwasher-safe. Prolonged exposure to strong detergents can cause these parts to degrade and may impact the pan's performance. Stainless steel pans that have seen high amounts of acidic food products may also corrode more easily if put in the dishwasher.
Yes, hand-washing is an alternative to using a dishwasher. Hand-washing can give you more control over how clean your pan gets and can help prolong the life of your pan. Use a gentle cloth with mild detergent and warm water. For stubborn stains, a paste made from equal parts baking soda and warm water can be used.
