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ALB Materials Inc
2360 Corporate Circle. Suite 400
Henderson, NV 89074-7739
United States
E-mail: sales@albmagnets.com

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Magnets Home > Products > Neodymium Magnets > Disc > D40x20mm Neodymium Magnet, 40 x 20mm Disc Magnet

D40x20mm Neodymium Magnet, 40 x 20mm Disc Magnet

Inquiry

Item No.:	D40x20mm
Material:	NdFeB, Grade N42
Shape:	Disc
Dimension:	40mm dia. x 20mm thick
Tolerances:	±0.1mm x ±0.1mm
Weight:	188.496g
Grade:	N42
Coating:	Ni-Cu-Ni (Nickel)
Pull Force(lbs):	111.03 lbs (50.47kg)
Surface Field(Gauss):	4667 Gauss
Magnetization direction:	Axial (Poles on Flat Ends)
Max Operating Temp:	80°C
Product Drawing:	·

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Related Magnets

Other Grade D40x20mm Neodymium Magnets (40mm dia. x 20mm thick):

Grade	Item No.	Product Name	Pull Force	Inquiry
N35	ALB-D40x20mm-N35	D40x20mm-N35 Neodymium Magnets	93.29 lbs (42.41kg)	Inquiry
N38	ALB-D40x20mm-N38	D40x20mm-N38 Neodymium Magnets	93.29 lbs (42.41kg)	Inquiry
N40	ALB-D40x20mm-N40	D40x20mm-N40 Neodymium Magnets	101.16 lbs (45.98kg)	Inquiry
N42	ALB-D40x20mm	D40x20mm Neodymium Magnets	111.03 lbs (50.47kg)	Inquiry
N45	ALB-D40x20mm-N45	D40x20mm-N45 Neodymium Magnets	117.86 lbs (53.57kg)	Inquiry
N48	ALB-D40x20mm-N48	D40x20mm-N48 Neodymium Magnets	124.89 lbs (56.77kg)	Inquiry
N50	ALB-D40x20mm-N50	D40x20mm-N50 Neodymium Magnets	128.49 lbs (58.40kg)	Inquiry
N52	ALB-D40x20mm-N52	D40x20mm-N52 Neodymium Magnets	132.13 lbs (60.06kg)	Inquiry
N42SH	ALB-D40x20mmSH	D40x20mmSH Neodymium Magnets	111.03 lbs (50.47kg)	Inquiry

High Temperature D40x20mm Neodymium Magnets (40mm dia. x 20mm thick) are also available:

Neodymium Material Type	Maximum Operating Temp	Curie Temp
N (N35-N52)	176°F (80°C)	590°F (310°C)
NM (N35M-N52M)	212°F (100°C)	644°F (340°C)
NH (N33H-N52H)	248°F (120°C)	644°F (340°C)
NSH (N30SH-N50SH)	302°F (150°C)	644°F (340°C)
NUH (N28UH-N48UH)	356°F (180°C)	662°F (350°C)
NEH (N28EH-N48EH)	392°F (200°C)	662°F (350°C)
NAH (N28AH-N35AH)	428°F (220°C)	662°F (350°C)

The Thermal Characteristics listed above are values commonly associated with each magnet's grade or material. Actual performance in your application may vary with other factors, including the shape of the magnet, the Permeance Coefficient or load line, and how it is used in a circuit.

D40x20mm Neodymium Magnets (40mm dia. x 20mm thick) with other Coating are also available:

Coating Type	Overall Thickness	Salt Spray Test	Pressure Cooker Test
Ni-Cu-Ni (Nickel)	15-21 μm	24 hours	48 hours
NiCu + Black Nickel	15-21 μm	24 hours	48 hours
NiCuNi + Epoxy	20-28 μm	48 hours	72 hours
NiCuNi + Gold	16-23 μm	36 hours	72 hours
NiCuNi + Silver	16-23 μm	24 hours	48 hours
Zinc	7-15 μm	12 hours	24 hours

Each individual layer of Nickel and Copper are 5-7 μm thick. The Gold and Silver Coating layers are 1-2 μm thick. Test results shown to allow comparison between Coating options. Performance in your application under your specific test conditions may vary. Salt Spray testing conducted with a 5% NaCl solution, at 35°C. Pressure Cooker Test (PCT) conducted at 2 atm, 120°C at 100% RH.

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