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Why some stainless steel can be absorbed with a magnet

2022-09-09

Some stainless steel can be attracted by magnets, that is because these stainless steel with magnetic

Stainless steel is iron carbon alloy, under normal circumstances, iron metal is not with magnetic austenite, but in the smelting process, after cold processing, the structure will change, stable austenite into an unstable martensite, so that stainless steel with magnetic, can be attracted by a magnet.

stainless steel

Stainless steel that can be attracted by magnets are:
1, stainless steel is a kind of iron carbon alloy, plus some nickel, chromium and other elements, after processing the formation of a kind of steel with rust characteristics,
2, stainless steel is mainly divided into three categories: austenitic stainless steel (200, 304 series), ferritic stainless steel (405, 403), martensitic stainless steel (410).
3, austenitic stainless steel containing nickel, chromium metal more, chromium is greater than 18%, high corrosion resistance, no magnetic, can not be attracted by magnets,
4, ferritic stainless steel, containing chromium 15% ~ 30%.It's strong, it's magnetic, it can be held by a magnet,
5, martensitic stainless steel with high carbon, high strength, but poor plasticity and welding performance, with magnetic, can be attracted by a magnet,
Summary: stainless steel is iron carbon alloy, under normal circumstances, iron metal is the existence of austenite, without magnetic, but after processing will become martensitic stainless steel, thus with magnetic, can be attracted by a magnet.

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