Designing with high-temperature neodymium magnets has become more complex—especially as material restrictions, tariffs, and sourcing limitations continue to evolve.

Allstar Magnetics helps engineering teams move forward with confidence. We know what materials are available, what’s restricted, and how to design around both—while supporting performance, manufacturability, and certification requirements.

• N = Neodymium Iron Boron (NdFeB) Magnet Material
• No letter suffix = Base material (Max Operating Yemperature 80°C)
• Suffix letters indicate temperature capability:

M – Max Temp 100°C

H – Max Temp 120°C

SH – Max Temp 150°C

UH – Max Temp 180°C

Temperature rating matters—especially in motors, sensors, and high-power applications where heat directly impacts magnetic performance and reliability

In many applications—especially motors—heat cannot always be “engineered out.” When operating temperatures climb, magnet selection becomes critical.

UH-grade neodymium magnets enable:

• Reliable performance at elevated temperatures
• Improved motor efficiency and durability
• Design flexibility when thermal constraints exist

Allstar supports UH solutions where available—and helps customers evaluate alternatives when UH is not the right or available option.

Heavy Rare Earth (HRE) materials such as Dysprosium (Dy) and Terbium (Tb) are increasingly restricted and difficult to source.

A growing selection of HRE-free neodymium materials is now available. Allstar tracks what is available, what is restricted, and what is coming next—so you don’t have to.

• HRE-Free = No Dy or Tb required
• Many grades were available prior to tariffs and remain compliant
• Expanded availability across moderate and high-temperature ranges
• Newer materials (including MLQ grades) are emerging as demand grows
• HRE-free grades highlighted in blue are available with a minimum order quantity of 225 lbs.