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169 Lexington Court, Unit I

Waterloo, ON, N2J 4R9

 

US Address:

Niagara Falls, NY 14305

Canadian/International ship from Waterloo; US orders from Buffalo, NY.

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Neodymium Block Magnets

High tolerance neodymium rare earth rectangle, square & cube magnets, N42 grade

Get repeatability and affordability with volume pricing.

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Displaying 1 to 38 (of 38 products) Result Pages:  1 
 

Custom Magnet Assemblies

Indigo Instruments is partnered with a world class designer & manufacturer of magnets & magnet assemblies. For more information see: Custom Machined Magnet Assemblies & Magnetic Filters.

See the Technical Tab below for General Specifications. .

For detailed specifications on individual magnets, click on their respective images for gauss ratings & pull forces with different air gaps.

American/Canadian Coin Sizes: 1 in= 25 mm

Dime: ~18x1.2mm; Penny: ~19x1.45mm; Nickel: ~21x1.75mm; Quarter: ~24x1.6mm.

  • Can damage computer gear & credit cards.
  • Handle with care. Magnets can snap together and break skin or a finger or shatter on impact.
Specifications for Fully Sintered/Pressed Neodymium Magnets, N42 Grade
Remanent
Flux Density
(Br)
Coercivity
(bHc)
Intrinsic
Coercivity
(jHc)
Maximum
Energy Product
(BHMax)
Curie
Temperature
(Tc)
Working
Temperature (Tc)
Temperature
Coefficient
(αB)r
13,000G; 1300mT 12.0 Oe; 955 A/m 17.0 Oe; 1353 A/m 42 MGO; 334 kJ/m3 310oC 80oC -0.12%/Co

 

  • nickel-copper-nickel coated
  • size tolerance for dimensions <10mm: +/- 0.05mm
  • size tolerance for dimensions >10mm: +/- 0.1mm
  • size tolerance for dimensions >50mm: +/- 0.2mm
  • magnet strength variance piece to piece: ± 5%
  • axis of magnetization is perpendicular to page

 

This table is a summary of pull forces for all block magnets. It assumes complete saturation & no air gap. See individual magnets for values with different gaps.

Field Strength (Gauss) & Pull Forces in Pounds & Kilograms at Surface/Centre of Magnet
SKU Size (mm) Gauss Pounds Kilograms
43524 4 × 2 × 1 3723 0.27 0.12
44220-1 2.5 × 2.5 × 1 3786.5 0.2 0.1
44220-2.5 2.5 × 2.5 × 2.5 5666.8 1.0 0.4
44221-1 5 × 2.5 × 1 3192.2 0.36 0.16
44222-1 5 × 5 × 1 2199.2 0.6 0.3
44222-2.5 5 × 5 × 2.5 4333.3 1.5 0.7
44222-5 5 × 5 × 5 5666.8 3.8 1.7
44225-1 7.5 × 7.5 × 1 1516.3 1.0 0.5
44225-2.5 7.5 × 7.5 × 2.5 3335.7 2.6 1.2
44225-5 7.5 × 7.5 × 5 4976.1 5.0 2.3
44225-7.5 7.5 × 7.5 × 7.5 5666.8 8.5 3.9
44226-2.5 10 × 2.5 × 2.5 4870.9 1.16 0.53
44227-1 10 × 5 × 1 1791.7 0.95 0.43
44227-2.5 10 × 5 × 2.5 3723 2.39 1.09
44227-5 10 × 5 × 5 5248.1 4.55 2.07
44229-1 10 × 10 × 1 1151.4 1.4 0.7
44229-2.5 10 × 10 × 2.5 2662.8 3.8 1.7
44229-5 10 × 10 × 5 4333.3 7.9 3.6
44229-10 10 × 10 × 10 5666.8 15.1 6.9
44230-1 12.5 × 2.5 × 1 2900.4 0.69 0.31
44230-2.5 12.5 × 2.5 × 2.5 4800.9 1.72 0.78
44231-1 12.5 × 5 × 1 1725.9 1.09 0.5
44231-2.5 12.5 × 5 × 2.5 3590.7 2.78 1.26
44231-5 12.5 × 5 × 5 5101.1 5.41 2.46
44234-1 12.5 × 12.5 × 1 926.5 1.9 0.9
44234-2.5 12.5 × 12.5 × 2.5 2199.2 5.2 2.3
44234-5 12.5 × 12.5 × 5 3786.5 11.1 5.0
44234-12.5 12.5 × 12.5 × 12.5 5666.8 23.6 10.7
44251-5 20 × 10 × 5 3723 13.2 6.0
44256-2.5 25 × 2.5 × 2.5 4692.6 2.78 1.26
44257-2.5 25 × 5 × 2.5 3380.8 4.46 2.03
44257-5 25 × 5 × 5 4800.9 9.31 4.23
44259-2.5 25 × 10 × 2.5 2105.4 6.88 3.13
44259-5 25 × 10 × 5 3590.7 14.9 6.77
44260-2.5 25 × 12.5 × 2.5 1791.7 7.65 3.48
44260-5 25 × 12.5 × 5 3192.2 17.15 7.8
44265-2.5 25 × 25 × 2.5 1151.4 10.9 5.0
44265-5 25 × 25 × 5 2199.2 25.2 11.4
44265-25 25 × 25 × 25 5666.8 94.5 42.9
44402-2.5 50 × 5 × 2.5 3320.8 6.88 3.13

You may also find this N42 hysteresis graph useful.