B444B - Neodymium Block Magnet

• Dimensions: 1/4" x 1/4" x 1/4" thick
• Tolerances: ±0.004" x ±0.004" x ±0.004"
• Material: NdFeB, Grade N42
• Plating/Coating: Ni-Cu-Black Ni (Black Nickel)
• Magnetization Direction: Thru Thickness
• Weight: 0.0677 oz. (1.92 g)
• Pull Force, Case 1: 4.25 lbs
• Pull Force, Case 2: 5.20 lbs
• Surface Field: 5754 Gauss
• Max Operating Temp: 176ºF (80ºC)
• Brmax: 13,200 Gauss
• BHmax: 42 MGOe

Here we have our ever-popular 1/4" cubes in a black nickel finish. The black nickel plating gives the magnets a shiny, charcoal-colored finish. They are the same as the B444, just a different color.

This size is also available in grade N42 with our standard Nickel plating as part number B444, in grade N52 as part number B444-N52 and with a 1/16" hole through the center as part number B444-1.

Note: Our "Black Nickel" plating is achieved by adding a special tint during the nickel plating process. The resulting color is not black. The appearance of these magnets is best described as grey, charcoal or gunmetal. Due to this unique process, slight variation in color may occur from order to order.

	Pull Force, Case 1 vs. distance: Magnet to a Steel Plate.
	Pull Force, Case 2 vs. distance: Between 2 Steel Plates.
	Pull Force, Case 3 vs. distance: Magnet to Magnet.
	Pull Force, Case 4 vs. distance: Magnet to Magnet Repulsion.
	Click this link for a depiction of the magnetic field.
	View B-H curves for this magnet.