In general, stainless steels contain chromium contained significantly more iron to improve corrosion resistance. Depending on the intended use, anumber of nickel steels also add more variety or other metals such as manganese or molybdenum. The amount of different substances create different properties such as hardness, stress resistance, bending properties.
Stainless steel 18/8 commonly found in cutlery spoon scoops 18% chromium and 8% nickel in addition to iron and nonmagnetic at room temperature.
A stainless steels that are magnetic or not while lying in a magnetic field depends on its crystal structure, and that structure varies according to the metal components in addition to iron and sometimes depends on room temperature.
Stainless steel is ferromagnetic structure enables tiny magnetic fields inside called the domain when arranging polarization in the magnetic field. Inaustenitic type, this does not happen again. The basic difference is the arrangement of electrons in the inner magnetic core of iron ions.
