Is 18/10 Stainless Steel Magnetic?
Updated: Jul 31
A common misconception is that stainless steel simply has no magnetic properties at all, but that is not quite the full picture.
18/10 stainless steel is non-magnetic under normal conditions as a raw material, and the reason traces back to its alloy composition and crystal structure. However, once the steel is shaped, drawn, or stamped during manufacturing, the finished product you hold in your hand can sometimes behave differently.
In this guide, we explain why 18/10 starts out non-magnetic, when and why exceptions can arise, and what it means in practice, particularly for induction cooking.
Why 18/10 Stainless Steel Is Non-Magnetic
The “18/10” label means the steel contains approximately 18% chromium and 10% nickel, with iron and small amounts of other elements making up the remainder. Nickel is an austenite-stabilising element that helps the steel retain an austenitic crystal structure at room temperature.
Unlike ferritic stainless steels, which have a body-centred cubic crystal structure and are generally magnetic, 18/10 stainless steel is typically austenitic. In the annealed condition, it has very low magnetic permeability and is therefore generally considered non-magnetic. However, cold-working processes such as stamping, bending, or forming can create some martensite, causing the finished product to respond more noticeably to a magnet.
Grade 316 is another widely used austenitic stainless steel that is typically non-magnetic when annealed. It also contains molybdenum, which improves resistance to pitting and crevice corrosion in many chloride-containing environments.
The Exception: When 18/10 Can Become Slightly Magnetic
This is the source of a common myth: because the raw alloy is non-magnetic, many people assume the finished product will always be too. In reality, manufacturing processes can introduce a degree of magnetism even without changing the alloy composition at all.
Pure, annealed 18/10 stainless steel is non-magnetic, but the blanket claim that "stainless steel has no magnetic properties" is a misleading generalisation. The process is called cold-working: when the steel is mechanically deformed at room temperature (for example, when sheet metal is stamped into a pan body, drawn into a tube, or pressed into flatware shapes), some of the austenitic structure can transform into martensite, a harder, BCC-like phase that is magnetic.
The amount of martensite that forms depends on how severely the metal is worked, how low the temperature is, and the exact composition of the alloy. Heavily formed areas, such as the rolled rim of a pan or the narrow neck of a spoon handle, tend to show more martensite than flat, lightly worked sections.
In practice, this means a genuine 304/18/10 pot or spoon may show a faint magnetic pull at certain spots, even though it is correctly labelled 18/10. A very weak, localised pull is not a sign of poor quality; a strong, consistent pull across the whole piece suggests the steel is not austenitic at all and may be a lower-grade alloy.
Heat treatment during manufacturing can also influence the final magnetic behaviour of the finished piece, which is another reason why the same alloy grade can behave slightly differently from one product to the next.
Induction Cooking and 18/10 Stainless Steel
Induction hobs work by generating a magnetic field that induces an electric current in the cookware base, which produces heat. For this to happen, the base of the pan must be ferromagnetic, meaning a magnet must stick to it. Because 18/10 stainless steel is non-magnetic, a pan made entirely from 18/10 will not work on an induction hob.
However, most induction-compatible stainless steel cookware is not made from a single layer of 18/10 stainless steel. Instead, manufacturers typically use clad or disc-bottom construction, incorporating a magnetic exterior or base layer, often made from ferritic stainless steel such as grade 430, to interact with the induction hob’s magnetic field. The interior cooking surface may remain 18/10 stainless steel, providing corrosion resistance and food-safe performance, while the magnetic layer enables induction heating.
To further improve performance, many premium 18/10 cookware lines incorporate a multi-layer metal construction in the base. A common arrangement places 18/10 stainless steel on the inside cooking surface, a copper core in the middle for rapid, even heat transfer (copper has significantly higher thermal conductivity than other metals), and a ferritic magnetic layer on the outside that the induction hob can detect.
This three-layer design serves two purposes at once: the copper distributes heat quickly and evenly across the pan, while the magnetic outer layer enables induction use. Some manufacturers use aluminium as the core layer instead, which is more cost-effective while still offering good heat distribution.
So when a product description says "18/10 stainless steel, induction compatible," it means the cooking surface is 18/10, but the base includes a separate magnetic layer, not that the 18/10 itself has become magnetic.
How 18/10 Compares to 18/0 on Magnetism
The "0" in 18/0 stainless steel refers to zero nickel. Without nickel to stabilize the austenitic structure, 18/0 steel retains its BCC (ferritic) crystal structure and is therefore magnetic. A magnet sticks firmly to 18/0 stainless steel flatware or cookware.
This makes 18/0 naturally compatible with induction hobs without needing a separate magnetic layer in the base. It is also less expensive than 18/10, because nickel is a costly alloying element.
The trade-off is reduced corrosion resistance: without nickel, 18/0 is more prone to surface staining, rust spots in high-humidity environments, and reaction with acidic foods over time. For cutlery kept dry and washed promptly, 18/0 performs adequately; for cookware or items that see prolonged contact with salt, vinegar, or tomato-based sauces, 18/10 holds up significantly better.
The shorthand to remember: 18/10 = non-magnetic as a material, better corrosion resistance; 18/0 = magnetic, lower cost, less corrosion-resistant.
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