How to calculate the weight of the magnet?

See many friends on the Internet looking for about how to calculate the weight of the magnet, magnet weight calculation formula, just last time the company training about the weight of the magnet calculation formula, now fry now sell, next john will share the specific weight of the magnet calculation formula.
According to the formula for calculating the weight of square magnet, the density of magnets of different materials is different, for example, the density of ferrite magnet is 4.9.

  • For example, F20 * 10 * 3 is calculated as 7.5 here.

The formula is: 20 * 10 * 3 * 7.5/1000 = 4.5g, multiply the quantity by the quantity.
The formula for calculating the weight of disk magnet is as follows: (the density is calculated according to 7.5).

  • For example, the specification is Φ 20.5 * 8.9.

The calculation formula is: area × thickness × density △ 1000 = weight (g), i.e

  • 7.5 * 3.14 * 20.5 M2 * 8.9/4000 = 22.02g or 7.5 * 3.14 * 10.. 25 m2 * 8.9/1000 = 22.02g

Calculation formula of ring magnet weight
π * (a + b) (a-b) * C (thickness) * P (density) / 4000 [where a and B represent length and width respectively]

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