to a magnet, are called ferromagnetic

Magnetized and Physical Traits
Many grades of Neodymium magnets exist to support a variety of commercial applications. The range of Neo grades typically stretches from 33 MGOe to 52 MGOe. This range allows for optimizing cost, performance, and working temperature weight.

The normal convention for “Grade” is to utilize the value of specific magnet alloy’s Energy Density or optimum Energy item. Frequently, you can find letters or a-two digit number suffix connected to the level which indicates the Intrinsic Coercive Force (Hci) standard of the magnet alloy. This Hci is a good signal associated with maximum allowable temperature a particular Neo alloy can tolerate before permanent demagnetizing does occur.

The higher the “Grade number,” the bigger the Energy Density. Often, the larger the power Density, the more powerful the magnet, but this will be greatly dependent upon the magnet’s working environment.

* Maximum working Temperature because of this Group is 60°C / 140°F ( L/D ≥0.7)
Dura
Magnetic
Level Popular
Business
Notation Residual
Induction
Br Coercive
Power
Hc Intrinsic
Coercive
Force
Hci Optimum
Energy
Product
(BH)max
Number Minimum Minimum Range
k-Gauss Tesla k-Oersted kA/m k-Oersted kA/m MGOe kJ/m3
5011 N50 14.0 – 14.5 1.40 – 1.45 10.5 836 11 876 47 – 51 374 – 406
5211 N52 14.4 -14.8 1.44 – 1.48 10.5 836 11 876 49 – 53 390 – 422

* Maximum working Temperature with this Group is 80°C / 176°F ( L/D ≥0.7)
Dura
Magnet
Grade Popular
Business
Notation Residual
Induction
Br Coercive
Force
Hc Intrinsic
Coercive
Power
Hci Maximum
Power
Product
(BH)max
3512 N35 11.8 – 12.3 1.18 – 1.23 10.9 868 12 955 34 – 36 263 – 287
3812 N38 12.3 – 12.6 1.23 – 1.26 11.3 899 12 955 36 – 39 287 – 311
4012 N40 12.6 – 12.9 1.26 – 1.29 11.4 907 12 955 38 – 41 302 – 327
4212 N42 12.9 – 13.3 1.29 – 1.33 11.5 915 12 955 40 – 43 318 – 342
4512 N45 13.3 – 13.7 1.33 – 1.37 11.0 876 12 955 43 – 46 342 – 366
4812 N48 13.7-14.1 1.37 – 1.41 10.5 836 12 955 45 – 49 358 – 390
* optimum Operating Temperature with this Group is 100°C / 212°F ( L/D ≥0.7)
Dura
Magnet
Grade Typical
Business
Notation Residual
Induction
Br Coercive
Energy
Hc Intrinsic
Coercive
Force
Hci Optimum
Energy
Item
(BH)max
Number Minimum Minimal Number
k-Gauss Tesla k-Oersted kA/m k-Oersted kA/m MGOe kJ/m3
3314 N33M 11.3 – 11.8 1.13 – 1.18 10.5 836 14 1,114 31 – 34 247 – 271
3514 N35M 11.8 – 12.3 1.18 – 1.23 10.9 868 14 1,114 34 – 36 263 – 287
3814 N38M 12.3 – 12.6 1.23 – 1.26 11.3 899 14 1,114 36 – 39 287 – 311
4014 N40M 12.6 – 12.9 1.26 – 1.29 11.6 923 14 1,114 38 – 41 302 – 327
4214 N42M 12.9 – 13.3 1.29 – 1.33 12.0 955 14 1,114 40 – 43 318 – 342
4514 N45M 13.3 – 13.7 1.33 – 1.37 12.5 995 14 1,114 43 – 46 342 – 366
4814 N48M 13.7 -14.1 1.37 – 1.41 12.9 1,027 14 1,114 45 – 49 358 – 390
5014 N50M 14.0 – 14.5 1.40 – 1.45 13.0 1,033 14 1,114 47 – 51 374 – 406

* Maximum working Temperature with this Group is 120°C / 248°F ( L/D ≥0.7)
Dura
Magnetic
Level Popular
Business
Notation Residual
Induction
Br Coercive
Energy
Hc Intrinsic
Coercive
Power
Hci Optimal
Power
Product
(BH)max
Range Minimal Minimum Number
k-Gauss Tesla k-Oersted kA/m k-Oersted kA/m MGOe kJ/m3
3017 N30H 10.8 – 11.3 1.08 – 1.13 10 796 17 1,353 28 – 31 223 – 247
3317 N33H 11.3 – 11.8 1.13 – 1.18 10.5 836 17 1,353 31 – 34 247 – 271
3517 N35H 11.8 – 12.3 1.18 – 1.23 10.9 868 17 1,353 34 – 36 263 – 287
3817 N38H 12.3 – 12.6 1.23 – 1.26 11.3 899 17 1,353 36 – 39 287 – 311
4017 N40H 12.6 – 12.9 1.26 – 1.29 11.6 923 17 1,353 38 – 41 302 – 327
4217 N42H 12.9 – 13.3 1.29 – 1.33 12 955 17 1,353 40 – 43 318 – 342
4517 N45H 13.3 – 13.7 1.3 – 1.37 12.3 979 17 1,353 43 – 46 342-366
4817 N48H 13.7 – 14.1 1.37 – 1.41 12.5 995 17 1,353 45 – 49 358-390

* optimum Operating Temperature with this Group is 150°C / 302°F ( L/D ≥0.7)
Dura
Magnet
Grade Common
Industry
Notation Residual
Induction
Br Coercive
Power
Hc Intrinsic
Coercive
Energy
Hci Maximum
Power
Product
(BH)max
Range Minimal Minimal Number
k-Gauss Tesla k-Oersted kA/m k-Oersted kA/m MGOe kJ/m3
3020 N30SH 10.8 – 11.4 1.08 – 1.14 10.1 804 20 1,592 28 – 31 223 – 247
3320 N33SH 11.4 – 11.8 1.14 – 1.18 10.6 844 20 1,592 31 – 34 247 – 271
3520 N35SH 11.8 – 12.3 1.18 – 1.23 11.0 876 20 1,592 33 – 36 263 – 287
3820 N38SH 12.3 – 12.6 1.23 – 1.26 11.4 907 20 1,592 36 – 39 287 – 311
4020 N40SH 12.6 – 12.9 1.26 – 1.29 11.6 939 20 1,592 38 – 41 302 – 326
4220 N42SH 12.9 – 13.3 1.29 – 1.33 12.4 987 20 1,592 40 – 43 318 – 342
4520 N45SH 13.3 – 13.7 1.33 – 1.37 12.6 1,003 20 1,592 42 – 46 334 – 366

* optimum working Temperature with this Group is 180°C / 356°F ( L/D ≥0.7)
Dura
Magnetic
Level Popular
Business
Notation Residual
Induction
Br Coercive
Energy
Hc Intrinsic
Coercive
Force
Hci Optimum
Power
Product
(BH)max
Range Minimal Minimal Range
k-Gauss Tesla k-Oersted kA/m k-Oersted kA/m MGOe kJ/m3
2825 N28UH 10.4 – 10.8 1.04 – 1.08 9.6 764 25 1,989 26 – 29 207 – 231
3025 N30UH 10.8 – 11.4 1.08 – 1.14 10.1 804 25 1,989 28 – 31 223 – 247
3325 N33UH 11.4 – 11.8 1.14 – 1.18 10.7 852 25 1,989 31 – 34 247 – 271
3525 N35UH 11.8 – 12.3 1.18 – 1.23 10.8 860 25 1,989 33 – 36 263 – 287
3825 N38UH 12.3 – 12.6 1.23 – 1.26 11.3 899 25 1,989 36 – 39 287 – 311
4025 N40UH 12.5 – 12.9 1.25 – 1.29 11.4 907 25 1,989 38 – 41 302 – 326
4225 N42UH 12.8 – 13.3 1.28 – 1.33 11.6 923 25 1,989 40 – 43 318 – 342

* optimal Operating Temperature because of this Group is 200°C / 392°F ( L/D ≥0.7)
Dura
Magnetic
Grade Common
Business
Notation Residual
Induction
Br Coercive
Power
Hc Intrinsic
Coercive
Energy
Hci Maximum
Power
Item
(BH)max
Number Minimum Minimum Number
k-Gauss Tesla k-Oersted kA/m k-Oersted kA/m MGOe kJ/m3
2830 N28EH 10.4 – 10.8 1.04 – 1.08 9.8 780 30 2,388 26 – 29 207 – 231
3030 N30EH 10.8 – 11.4 1.08 – 1.14 10.1 804 30 2,388 28 – 31 223 – 247
3330 N33EH 11.4 – 11.8 1.14 – 1.18 10.3 820 30 2,388 31 – 34 247 – 271
3530 N35EH 11.7 – 12.3 1.17 – 1.23 10.5 836 30 2,388 33 – 36 263 – 287
3830 N38EH 12.2- 12.6 1.22 – 1.26 11.3 899 30 2,388 35 – 39 278 – 311

* optimum Operating Temperature with this Group is 230°C / 446°F ( L/D ≥0.7)
Dura
Magnet
Level Common
Industry
Notation Residual
Induction
Br Coercive
Energy
Hc Intrinsic
Coercive
Power
Hci Optimal
Energy
Product
(BH)max
Range Minimal Minimum Number
k-Gauss Tesla k-Oersted kA/m k-Oersted kA/m MGOe kJ/m3
2835 N28AH 10.4 – 10.9 1.04 – 1.09 9.8 780 35 2,785 26 – 29 207 – 231
3035 N30AH 10.8 – 11.3 1.08 – 1.13 10.1 804 35 2,785 28 – 31 223 – 247
3335 N33AH 11.3 – 11.8 1.13 – 1.18 10.3 820 33 2,625 31 – 34 247 – 271
3535 N35AH 11.7 – 12.3 1.17 – 1.23 10.5 836 33 2,625 33 – 36 263 – 287
Reversible heat Coefficients (0°C to 100°C)
Intrinsic Coercive Energy (Hci) Induction Br (G) Intrinsic Coercivity Hci (Oe)
(KOe) (%) (percent)
11 -0.12% -0.70%
12 -0.12per cent -0.70%
14 -0.12per cent -0.65%
17 -0.11percent -0.65per cent
20 -0.11per cent -0.60%
25 -0.10% -0.55%
30 -0.10percent -0.50%
35 -0.09per cent -0.40per cent
α = Δ Br / Δ T * 100 (Br @ 20°C) [ΔT = 20°C – 100°C]
β = Δ Hci / Δ T * 100 (Hci @ 20°C) [ΔT = 20°C – 100°C]
Neodymium Magnets – Actual Properties
Property Products Values
Vickers Hardness Hv ≥550
Density g/cm3 ≥7.4
Curie Temp TC °C 312 – 380
Curie Temp TF °F 593 – 716
Particular weight μΩ⋅Cm 150
Bending Strength Mpa 250
Compressive Power Mpa 1000~1100
Thermal development Parallel (∥) to Orientation (M) °C-1 (3-4) x 10-6
Thermal Expansion Perpendicular (⊥) to Orientation (M) °C-1 -(1-3) x 10-6
Teenage’s Modulus kg/mm2 1.7 x 104
The detailed values tend to be estimated and may be applied as a guide. Any magnetic or actual faculties ought to be substantiated before selecting a magnet material. Please engage Dura’s magnet Design / developing team prior to selecting a design course.
disc magnet A lasting magnet is an item produced using a material that is charged and makes its own determined attractive field. An ordinary model is a fridge magnet used to hold notes on a cooler entryway. Materials that can be polarized, which are likewise the ones that are emphatically pulled in to a magnet, are called ferromagnetic (or ferrimagnetic).
disc magnet Perpetual magnets are produced using “hard” ferromagnetic materials, for example, alnico and ferrite that are exposed to unique handling in a solid attractive field during production to adjust their inside microcrystalline structure, making them exceptionally difficult to demagnetize.
disc magnet Albeit ferromagnetic (and ferrimagnetic) materials are the main ones pulled in to a magnet unequivocally enough to be usually viewed as attractive, every single other substance react feebly to an attractive field, by one of a few different kinds of attraction.
disc magnet Perpetual magnets are produced using “hard” ferromagnetic materials, for example, alnico and ferrite that are exposed to unique handling in a solid attractive field during production to adjust their inside microcrystalline structure, making them exceptionally difficult to demagnetize.
disc magnet Albeit ferromagnetic (and ferrimagnetic) materials are the main ones pulled in to a magnet unequivocally enough to be usually viewed as attractive, every single other substance react feebly to an attractive field, by one of a few different kinds of attraction.
disc magnet The general quality of a magnet is estimated by its attractive minute or, on the other hand, the all out attractive transition it produces. The nearby quality of attraction in a material is estimated by its charge.
disc magnet The general quality of a magnet is estimated by its attractive minute or, on the other hand, the all out attractive transition it produces. The nearby quality of attraction in a material is estimated by its charge.
disc magnet Ferromagnetic materials can be partitioned into attractively “delicate” materials like strengthened iron, which can be polarized yet don’t will in general remain charged, and attractively “hard” materials, which do.
disc magnet These incorporate the components iron, nickel and cobalt and their compounds, some combinations of uncommon earth metals, and some normally happening minerals, for example, lodestone.
disc magnet To demagnetize a soaked magnet, a specific attractive field must be applied, and this edge relies upon coercivity of the separate material. “Hard” materials have high coercivity, while “delicate” materials have low coercivity.
disc magnet Ferromagnetic materials can be partitioned into attractively “delicate” materials like strengthened iron, which can be polarized yet don’t will in general remain charged, and attractively “hard” materials, which do.
disc magnet These incorporate the components iron, nickel and cobalt and their compounds, some combinations of uncommon earth metals, and some normally happening minerals, for example, lodestone.
disc magnet A magnet is a material or item that creates an attractive field. This attractive field is imperceptible yet is liable for the most outstanding property of a magnet: a power that pulls on other ferromagnetic materials, for example, iron, and draws in or repulses different magnets.
disc magnets The measure of this torque is relative both to the attractive minute and the outer field. A magnet may likewise be dependent upon a power driving it toward some path, as indicated by the positions and directions of the magnet and source.
disc magnets A lasting magnet is an item produced using a material that is charged and makes its own determined attractive field. An ordinary model is a fridge magnet used to hold notes on a cooler entryway. Materials that can be polarized, which are likewise the ones that are emphatically pulled in to a magnet, are called ferromagnetic (or ferrimagnetic).
disc magnets A lasting magnet is an item produced using a material that is charged and makes its own determined attractive field. An ordinary model is a fridge magnet used to hold notes on a cooler entryway. Materials that can be polarized, which are likewise the ones that are emphatically pulled in to a magnet, are called ferromagnetic (or ferrimagnetic).
disc magnets Perpetual magnets are produced using “hard” ferromagnetic materials, for example, alnico and ferrite that are exposed to unique handling in a solid attractive field during production to adjust their inside microcrystalline structure, making them exceptionally difficult to demagnetize.
disc magnets A magnet is a material or item that creates an attractive field. This attractive field is imperceptible yet is liable for the most outstanding property of a magnet: a power that pulls on other ferromagnetic materials, for example, iron, and draws in or repulses different magnets.
disc magnets To demagnetize a soaked magnet, a specific attractive field must be applied, and this edge relies upon coercivity of the separate material. “Hard” materials have high coercivity, while “delicate” materials have low coercivity.