BuyMagnets.com offers grade 5 alnico magnets that include both a wide core and a u-shaped construction as part of their design. The u-shape design places the north and south magnetic poles closely together, which intensifies the magnetic field and increases the magnet’s strength as a result. The wide core also caters to unique design requirements in order to best serve our customers’ applications. These magnets have a maximum operating temperature of 1000 °F.