Strip Casting
Rapid-solidification strip casting
Extremely high magnetic strength
Products
NdFeB Magnets
High-performance rare-earth magnets engineered for maximum power, efficiency, and reliability.
- Exceptional magnetic performance
- Precision engineering
- Reliable. Efficient. Consistent.
Need Custom Advice?
Our engineers help you choose the right grade.
Sintered Neodymium (NdFeB)
Highest energy product. Ideal for EV motors and robotics.
Br (Remanence)
11.7-12.2 kGs / 1.17-1.22 T
Hcb (Coercivity)
≥10.9 kOe / ≥868 kA/m
Hcj (Intrin. Coer)
≥12 kOe / ≥955 kA/m
(BH)max
33-36 MGOe / 263-287 kJ/m³
Max Temp
≤80°C
Export License
N
NdFeB
Manufacturing Process
From raw material to delivery – controlled process steps for stable series quality.
Production Equipment
Production equipment from raw-material preparation through surface treatment.
HDDR
Hydrogen decrepitation
Jet Milling
Jet milling
Pressing
Forming / pressing
Sintering
Sintering furnaces
GBD
Grain Boundary Diffusion
GBD Line
GBD production line
Machining
Mechanical machining
Electroplating
Surface treatment
Marking
Automatic marking
Magnetizing
Magnetizing equipment
Packaging
Packaging & inspection line
Test & Laboratory Equipment
Test and laboratory equipment for magnetic, chemical and mechanical quality assurance.
Laboratory
Test laboratory overview
Permagraph
Demagnetization curve
ICP
Emission spectrometer
SEM
Scanning electron microscope
Particle Analysis
Laser particle-size analysis
O/H Analysis
Oxygen-hydrogen analyzer
Element Analysis
Infrared element analyzer
XRF
Coating thickness measurement
Deviation Angle
Magnetic deviation-angle test
Magnetic Flux
Automatic magnetic-flux test
Dimension & Optics
Appearance & tolerance test
HAST / PCT
Environmental & humidity test
Salt Spray
Salt spray test
Aging
Thermal aging test
CCD Inspection
Automatic visual inspection
NdFeB Surface Protection
Coating
Because sintered NdFeB magnets are susceptible to corrosion, the surface is protected according to the environment, assembly process and visual requirements. Options include metallic plating, organic coatings and temporary passivation.
Zinc
Cost-effective standard protection for applications with moderate corrosion exposure.
Color Zinc
Improved salt-spray resistance with a characteristic iridescent surface.
Black Epoxy
Very good resistance to humidity, heat and salt spray, combined with strong adhesion.
Everlube
Robust coating with very good salt-spray resistance and strong adhesion.
Gold
Premium decorative finish with good salt-spray resistance.
NiCuNi
Multilayer metallic plating with very good resistance to humidity, heat and salt spray.
Passivation
Thin temporary corrosion protection for controlled storage, transport or further processing.
Vacuum Aluminum
The coating is uniform and dense, bonds well to the substrate and provides excellent corrosion resistance.
The appropriate coating is selected for each project according to the operating environment, corrosion exposure, bonding process and visual requirements.
GBD Technology
Diffusion Process (GBD)
Grain-boundary diffusion applies small amounts of heavy rare-earth elements such as dysprosium (Dy) or terbium (Tb) to the magnet surface. During vacuum heat treatment, they diffuse into the magnet along the grain boundaries.
This significantly improves intrinsic coercivity Hcj and temperature stability while largely retaining remanence Br and maximum energy product.
Dy / TbHcj ↑Br ≈Vacuum Process
Higher coercivity
Improved resistance to demagnetization for demanding applications.
Efficient material use
Heavy rare earths are concentrated in the magnet zones where they are most effective.
Stable high-temperature performance
Extended operating range for motors and systems exposed to elevated temperatures.
High-performance grades
Enables powerful NdFeB grades with a balanced cost and material profile.
Process control
Controlled process – documented quality
01
Surface application
Dy- or Tb-bearing material is applied precisely to the magnet surface.
02
Vacuum diffusion
The elements diffuse along the grain boundaries at a controlled temperature.
03
Heat treatment
A tuned post-treatment stabilizes the microstructure and magnetic properties.
04
Quality inspection
Magnetic values, dimensions and surface quality are documented and verified.
GBD Technology
Manufacturing Process Comparison
Comparison of the magnet BH curves before and after the GBD process
GBD Technology
GBD Process Flow
GBD Technology
Magnetic Properties of GBD Magnets
Performance data for NdFeB grades using grain-boundary diffusion at room temperature.
Download Excel table| Series | Grade | Remanence | Coercivity | Intrinsic Coercivity | Max Energy Product | Squareness | Max Working Temperature | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Br | Hcb | Hcj | (BH)Max | Tw (L/D ≥ 0.7) | ||||||||
| kGs | T | kOe | kA/m | kOe | kA/m | MGOe | kJ/m³ | % | °C | °F | ||
| H | G52H | ≥ 14.25 | ≥ 1.425 | ≥ 13.5 | ≥ 1074 | ≥ 17 | ≥ 1353 | 49~53 | 390~422 | 90% | 120°C | 248°F |
| G54H | ≥ 14.45 | ≥ 1.445 | ≥ 13.9 | ≥ 1106 | 50~55 | 398~438 | ||||||
| SH | G45SH | ≥ 13.35 | ≥ 1.335 | ≥ 12.6 | ≥ 1003 | ≥ 20 | ≥ 1592 | 43~46 | 342~366 | ≥ 88% | 150°C | 302°F |
| G48SH | ≥ 13.65 | ≥ 1.365 | ≥ 12.9 | ≥ 1027 | 45~49 | 358~390 | ||||||
| G50SH | ≥ 13.95 | ≥ 1.395 | ≥ 13.2 | ≥ 1051 | 47~51 | 374~406 | ||||||
| G52SH | ≥ 14.25 | ≥ 1.425 | ≥ 13.4 | ≥ 1067 | 49~53 | 390~422 | ||||||
| G54SH | ≥ 14.45 | ≥ 1.445 | ≥ 13.9 | ≥ 1106 | 50~56 | 342~446 | ||||||
| UH | G33UH | ≥ 11.35 | ≥ 1.135 | ≥ 10.7 | ≥ 852 | ≥ 25 | ≥ 1990 | 31~34 | 247~271 | ≥ 86% | 180°C | 356°F |
| G35UH | ≥ 11.70 | ≥ 1.170 | ≥ 11.1 | ≥ 883 | 33~36 | 263~287 | ||||||
| G38UH | ≥ 12.20 | ≥ 1.220 | ≥ 11.5 | ≥ 916 | 36~39 | 287~310 | ||||||
| G40UH | ≥ 12.55 | ≥ 1.255 | ≥ 11.8 | ≥ 939 | 38~41 | 302~326 | ||||||
| G42UH | ≥ 12.85 | ≥ 1.285 | ≥ 12.1 | ≥ 963 | 40~43 | 318~342 | ||||||
| G45UH | ≥ 13.20 | ≥ 1.320 | ≥ 12.5 | ≥ 995 | 42~46 | 334~366 | ||||||
| G48UH | ≥ 13.65 | ≥ 1.365 | ≥ 12.9 | ≥ 1027 | 45~49 | 358~390 | ||||||
| G50UH | ≥ 13.95 | ≥ 1.395 | ≥ 13.2 | ≥ 1051 | 47~51 | 374~406 | ||||||
| G54UH | ≥ 14.45 | ≥ 1.445 | ≥ 13.7 | ≥ 1090 | 51~55 | 406~438 | ||||||
| EH | G28EH | ≥ 10.40 | ≥ 1.040 | ≥ 9.8 | ≥ 780 | ≥ 30 | ≥ 2388 | 26~29 | 207~231 | ≥ 86% | 200°C | 392°F |
| G30EH | ≥ 10.80 | ≥ 1.080 | ≥ 10.2 | ≥ 812 | 28~31 | 223~247 | ||||||
| G33EH | ≥ 11.35 | ≥ 1.135 | ≥ 10.7 | ≥ 852 | 31~34 | 247~271 | ||||||
| G35EH | ≥ 11.70 | ≥ 1.170 | ≥ 11.1 | ≥ 883 | 33~36 | 263~287 | ||||||
| G38EH | ≥ 12.20 | ≥ 1.220 | ≥ 11.5 | ≥ 916 | 36~39 | 287~310 | ||||||
| G40EH | ≥ 12.55 | ≥ 1.255 | ≥ 11.8 | ≥ 939 | 38~41 | 302~326 | ||||||
| G42EH | ≥ 12.70 | ≥ 1.270 | ≥ 12.0 | ≥ 955 | 39~43 | 310~342 | ||||||
| G45EH | ≥ 13.20 | ≥ 1.320 | ≥ 12.5 | ≥ 995 | 42~46 | 334~366 | ||||||
| G48EH | ≥ 13.65 | ≥ 1.365 | ≥ 12.9 | ≥ 1027 | 45~49 | 358~390 | ||||||
| G50EH | ≥ 13.95 | ≥ 1.395 | ≥ 13.2 | ≥ 1051 | 47~51 | 374~406 | ||||||
| AH | G28AH | ≥ 10.40 | ≥ 1.040 | ≥ 9.8 | ≥ 780 | ≥ 35 | ≥ 2786 | 26~29 | 207~231 | ≥ 86% | 230°C | 446°F |
| G30AH | ≥ 10.80 | ≥ 1.080 | ≥ 10.2 | ≥ 812 | 28~31 | 223~247 | ||||||
| G33AH | ≥ 11.35 | ≥ 1.135 | ≥ 10.7 | ≥ 852 | 31~34 | 247~271 | ||||||
| G35AH | ≥ 11.70 | ≥ 1.170 | ≥ 11.2 | ≥ 891 | 33~36 | 263~287 | ||||||
| G38AH | ≥ 12.20 | ≥ 1.220 | ≥ 11.7 | ≥ 931 | 36~39 | 287~310 | ||||||
| G40AH | ≥ 12.40 | ≥ 1.240 | ≥ 11.9 | ≥ 947 | 37~41 | 295~326 | ||||||
| G42AH | ≥ 12.70 | ≥ 1.270 | ≥ 12.1 | ≥ 963 | 39~43 | 310~342 | ||||||
| G45AH | ≥ 13.20 | ≥ 1.320 | ≥ 12.5 | ≥ 995 | 42~46 | 334~366 | ||||||
■The stated magnetic parameters and physical properties apply at room temperature.
■Maximum working temperature may vary with the length-to-diameter ratio, coating thickness and environmental conditions.
Engineering
Engineering Design & Simulation
With extensive manufacturing experience and state-of-the-art equipment, we provide comprehensive engineering support for magnetic products – from design, simulation and prototyping through optimization. We continuously improve material performance and integrate it seamlessly into your end products.
Our 2D and 3D finite-element analysis (FEA) modeling capabilities enable detailed investigation of magnetic components and assemblies. Maxwell electromagnetic simulations also support precise magnetic-force calculations and selection of the optimal magnet.
Engineering
Technical Support & Quotation
Our engineering teams in Hürth support grade selection, magnetic-circuit design and supply-chain planning.