Square-Block Magnet Force Specifications in Pounds, Newtons, Grams

Square Nd Magnets
Field Strengths & Holding Force

The square magnets are N42 ~13,000 gauss (1.3T-N42 grade) which is a theoretical maximum value. Field strengths have been calculated using finite element analysis at the surface and 4 places above the central point and are estimated to be within 10% of actual. For surface measurements, these values are more accurate than a magnetometer since such devices have an airgap of at least 0.1mm between the magnet and sensor.

The holding forces are also theoretical maximums, dependent on the permeability, thickness and area of the metal used. The attractive/repulsive force of 2 identical magnets is double this value.

nickel coated
size tolerance is +/- 0.1mm
80C maximum operating temperature

Metric measurement explained:
25mm (2.5cm) = ~1 inch; 2.5mm (0.25cm) = ~ 1/10 inch;

Scientific notation explained:
1.15E+03=1150; 1.15E+02=115; 1.15E+01=11.5; 1.15E+00=1.15; 1.15E-01=0.12; 1.15E-02=0.01

Click on These Links for Other Magnet Shapes & Prices:
Cube Magnets	Rectangle Magnets	Square Magnets	Ring Magnets
Small Disc Magnets	Large Disk Magnets	Rod Magnets	Inch Magnets

Click on These Links for Engineering Specifications:
Cube Magnet Holding & Field Strengths	Rectangle Magnet Holding & Field Strengths	Square Magnet Holding & Field Strengths
Small Disc Magnet Holding & Field Strengths	Large Disk Magnet Holding & Field Strengths	Rods/Cylinder Magnet Holding & Field Strengths

Field Strengths (in gauss) at 5 Distances (in mm); Holding Force in 3 Units

Size

0.1

100

lbs

gms

2.5x2.5x1

3.84E+03

3.61E+03

1.56E+03

1.11E+01

1.00E-02

0.4

177

5x5x1

2.23E+03

2.19E+03

1.61E+03

4.09E+01

5.00E-02

0.8

355

5x5x2.5

4.40E+03

4.26E+03

2.92E+03

8.57E+01

1.30E-01

2.0

887

10x10x2.5

2.70E+03

2.67E+03

2.34E+03

2.65E+02

5.00E-01

3.9

1775

10x10x5

4.40E+03

4.33E+03

3.66E+03

4.25E+02

9.70E-01

7.8

3549

12.5x12.5x2.5

2.23E+03

2.22E+03

2.02E+03

3.50E+02

7.80E-01

4.9

2218

12.5x12.5x5

3.84E+03

3.80E+03

3.36E+03

5.73E+02

1.51E+00

9.8

4436

25x25x2.5

1.17E+03

1.14E+03

5.55E+02

3.07E+00

9.8

4441

25x25x5

2.23E+03

2.22E+03

2.14E+03

9.81E+02

5.93E+00

19.6

8882

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Square Nd Magnets Field Strengths & Holding Force

Square Nd Magnets
Field Strengths & Holding Force