Magnetized and Physical Traits

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.