# Magnetic Saturation of A Piece of Steel

• Yrton
In summary, the conversation discusses how to calculate the magnetic saturation point of a piece of steel and the factors that may affect it, such as mass and cross-sectional area. The experts also mention the tesla as the unit of magnetic flux density.
Yrton
TL;DR Summary
How can one calculate and/or measure the magnetic saturation-point of a piece of steel (steel 1018 as an example)?
Hi all.
Given a piece of a steel 1018, as an example, with a spicific mass, how can one calculate the magnetic saturation-point of that piece either using mathematical or measuring methods? I've seen graphs stating the saturation points of different ferro-magnetic materials but, I assume, it must also dependent upon the mass of the given material, in a lab experiment.

Why would the saturation depend on the mass? Maybe I am misunderstanding the question(?)
The saturation point has to do with the structure of the magnetic domains; i.e. it is a "microscopic" parameter and has nothing as such to do with the amount of material.

Yrton said:
It is the cross section available for the magnetic path that is important.
If you double the sectional area of the steel, you can double the flux before saturation.
The tesla is the unit of magnetic flux density.
One tesla is equal to one weber per square metre.

berkeman

## What is magnetic saturation?

Magnetic saturation is the point at which a material can no longer be magnetized, even with the application of a strong magnetic field. This is because all of the material's magnetic domains are already aligned, and further magnetization is not possible.

## What is the significance of magnetic saturation in a piece of steel?

Magnetic saturation is important in a piece of steel because it determines the maximum amount of magnetic flux that can be induced in the material. This, in turn, affects the material's magnetic properties and its use in various applications such as electromagnets and magnetic storage devices.

## How does the composition of steel affect its magnetic saturation?

The composition of steel, specifically the amount of iron and carbon, can affect its magnetic saturation. Steel with a higher percentage of iron will have a higher saturation point, while steel with a higher percentage of carbon will have a lower saturation point.

## What factors can cause a piece of steel to reach magnetic saturation?

The main factor that can cause a piece of steel to reach magnetic saturation is the strength of the applied magnetic field. The stronger the field, the more likely the material will reach its saturation point. Other factors include the composition and structure of the steel, as well as its temperature.

## Can a piece of steel be demagnetized after reaching magnetic saturation?

Yes, a piece of steel can be demagnetized after reaching magnetic saturation. This can be achieved by subjecting the material to an alternating magnetic field or by heating it above its Curie temperature, which causes the magnetic domains to become disordered and the material to lose its magnetization.

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