What are the most common magnetic metals?

The most common magnetic metals are nickel, cobalt, and iron. These metals exhibit strong ferromagnetic properties, which means they have the capability of being magnetized and can maintain their magnetization even after the external magnetic field is removed. This characteristic is essential in various applications, including electromagnets, magnetic storage media, and various electronic devices.

Historically and in industrial applications, these three metals are recognized for their ability to create strong magnetic fields. Iron, for example, is widely used in the manufacturing of permanent magnets and is the primary material for many electrical transformer cores. Cobalt and nickel are often used in special alloys that maintain their magnetic properties at high temperatures.

In contrast, the other options do not include metals known for significant magnetic properties. Aluminum, zinc, silver, copper, gold, and titanium are non-magnetic or only exhibit very weak magnetic effects. While chromium does have some magnetic properties, it is not one of the primarily recognized magnetic metals in the context of this question.