By simultaneous additions of Co and V or of Co and Mo the temperature stability of sintered Nd‐Fe‐Al‐B magnets can be improved.1–3A partial substitution of Nd by Dy increases the coercivity by 1.4 kA/cm per wt. % Dy in the alloy, which results in strong coercivities at high temperatures. At 150 °C, for instance, coercivities of about 9 kA/cm can be achieved. The magnetizing behavior is determined by nucleation of reversed domains. A complete magnetization requires a magnetizing field strength of about 25 kA/cm and does not depend on the coercive field strength. Although in Nd‐Dy‐Fe‐Co‐Mo‐B magnets the Nd‐rich Fe eutectic and the Nd1.1Fe4B4boride are replaced by the Nd3Co compound and the Mo2FeB2boride, respectively, the corrosion is similar to sintered Nd‐Dy‐Fe‐B magnets. The corrosion rate at the 85 °C–85% relative humidity test is much more determined by the surface treatment of the magnets.