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

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Magnets Home > Products > Neodymium Magnets > Disc > D42 Neodymium Magnets, 1/4 inch dia. x 1/8 inch thick

D42 Neodymium Magnets, 1/4 inch dia. x 1/8 inch thick

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Item No.:	ALB-D42
Material:	NdFeB, Grade N42
Shape:	Disc
Dimension:	1/4" dia. x 1/8" thick (6.35mm dia. X 3.18mm thick)
Tolerances:	±0.004" x ±0.004" (±0.1mm x ±0.1mm)
Weight:	0.0266 oz. (0.754 g)
Grade:	N42
Coating:	Ni-Cu-Ni (nickel)
Pull Force(lbs):	2.30 lbs
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 D42 Neodymium Magnets (1/4" dia. x 1/8" thick):

Grade	Item No.	Product Name	Pull Force	Inquiry
N35	ALB-D42-N35	D42-N35 Neodymium Magnets	2.35 lbs	Inquiry
N38	ALB-D42-N38	D42-N38 Neodymium Magnets	2.35 lbs	Inquiry
N40	ALB-D42-N40	D42-N40 Neodymium Magnets	2.55 lbs	Inquiry
N42	ALB-D42	D42 Neodymium Magnets	2.80 lbs	Inquiry
N45	ALB-D42-N45	D42-N45 Neodymium Magnets	3.01 lbs	Inquiry
N48	ALB-D42-N48	D42-N48 Neodymium Magnets	3.24 lbs	Inquiry
N50	ALB-D42-N50	D42-N50 Neodymium Magnets	3.38 lbs	Inquiry
N52	ALB-D42-N52	D42-N52 Neodymium Magnets	3.52 lbs	Inquiry
N42SH	ALB-D42SH	D42SH Neodymium Magnets	2.80 lbs	Inquiry

High Temperature D42 Neodymium Magnets (1/4" dia. x 1/8" 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.

D42 Neodymium Magnets (1/4" dia. x 1/8" 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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