Bar magnets

What is the difference between 12,000 gauss and 14,000 gauss in their capacity to attract iron powder?

What happens when a lot of iron powder is poured over magnets bars of 12,000 gauss and 14,000 gauss? We conducted an experiment to check the results.

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How much iron powder did the 12,000 gauss bar magnet attract?

The iron powder attracted by the 12,000 gauss bar magnet weighed 2,157g (approx.2.2kg) .
The thickness of the iron powder attracted by the bar magnet was approximately 70mm.

  • Iron powder catches
  • 2.2kg

How much iron powder did the 14,000 gauss bar magnet attract?

The iron powder attracted by the 14,000 gauss bar magnet weighed 2,485g (approx.2.5kg) .
The thickness of the iron powder attracted by the bar magnet was approximately 80mm.

  • Iron powder catches
  • 2.5kg

What is the adsorption capability distance for a 12,000 gauss bar magnet?

How far do the lines of magnetic force of a 12,000 gauss bar magnet reach? When we checked the results, we found that the bar magnet could attract iron powder that was 30mm away.

  • Capture distance
  • 30mm

What is the adsorption capability distance for a 14,000 gauss bar magnet?

How far do the lines of magnetic force of a 14,000 gauss bar magnet reach? When we checked the results, we found that the bar magnet could attract iron powder that was 40mm away.

  • Capture distance
  • 40mm

Experiment results

Below is a summary of the experiment results.

Surface magnetic flux density Iron powder
Attraction capacity Attraction range Adsorption capability distance
12,000G 2.2kg 70mm 30mm
14,000G 2.5kg 80mm 40mm
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Differences in spatial magnetic flux density due to distance

The further away from the bar magnet, the lower the spacial magnetic flux density.

マグネットバー01 マグネットバー02
Gap
A		 30mm 40mm 50mm 60mm 70mm 80mm 90mm 100mm
12,000G - - - - - - - -
14,000G 14,540G 5,080G 2,400G 1,250G 700G 370G 200G 100G