Magnet Grades

Magnet-Grades.jpg

  • Dysprosium (Dy) or Terbium (Tb) Free

  • Regular +GBD

  • GBD only

  • Laboratory phase

NdFeB Performance Parameter Table

Series Parameter
Unit
Grade 		Remanence Intrinic Coercivity Coercivity Max Energy Product Density Relative Recoil
Permeability 		Temperature Coeffcient Max Working
Temperature
T kGs kA/m kOe kA/m kOe kJ/m3 MGOe g/cm3 αBr αHcj ℃
（L/D=0 .7)
Max Min Max Min Min Min Min Min Max Min Max Min Min %/℃ %/℃
N N56 1.50 1.46 15.0 14.6 876 11 812 10.2 446 406 56 51 7.50 1.05 -0.12 -0.76 80
N54 1.48 1.44 14.8 14.4 955 12 892 11.2 438 398 55 50 7.50 1.05 -0.12 -0.76 80
N52 1.46 1.42 14.6 14.2 955 12 892 11.2 422 390 53 49 7.50 1.05 -0.12 -0.76 80
N50 1.44 1.39 14.4 13.9 955 12 892 11.2 406 374 51 47 7.50 1.05 -0.12 -0.76 80
N48 1.42 1.37 14.2 13.7 955 12 892 11.2 390 358 49 45 7.50 1.05 -0.12 -0.76 80
N45 1.37 1.32 13.7 13.2 955 12 892 11.2 366 342 46 43 7.50 1.05 -0.12 -0.76 80
N42 1.32 1.28 13.2 12.8 955 12 923 11.6 342 318 43 40 7.50 1.05 -0.12 -0.76 80
N40 1.28 1.25 12.8 12.5 955 12 923 11.6 326 302 41 38 7.50 1.05 -0.12 -0.76 80
N38 1.25 1.22 12.5 12.3 955 12 923 11.6 310 287 39 36 7.50 1.05 -0.12 -0.76 80
N35 1.22 1.17 12.2 11.7 955 12 923 11.6 287 263 36 33 7.50 1.05 -0.12 -0.76 80
M N54M 1.49 1.44 14.9 14.4 1114 14 1035 13.0 438 398 55 50 7.50 1.05 -0.12 -0.76 100
N52M 1.46 1.42 14.6 14.2 1114 14 1035 13.0 422 390 53 49 7.50 1.05 -0.12 -0.68 100
N50M 1.44 1.39 14.4 13.9 1114 14 1035 13.0 406 374 51 47 7.50 1.05 -0.12 -0.68 100
N48M 1.42 1.37 14.2 13.7 1114 14 1027 12.9 390 358 49 45 7.50 1.05 -0.12 -0.68 100
N45M 1.37 1.32 13.7 13.2 1114 14 995 12.5 366 342 46 43 7.50 1.05 -0.12 -0.68 100
N42M 1.32 1.28 13.2 12.8 1114 14 955 12.0 342 318 43 40 7.50 1.05 -0.12 -0.68 100
N40M 1.28 1.25 12.8 12.5 1114 14 923 11.6 326 302 41 38 7.50 1.05 -0.12 -0.68 100
N38M 1.25 1.22 12.5 12.3 1114 14 899 11.3 310 287 39 36 7.50 1.05 -0.12 -0.68 100
N35M 1.22 1.17 12.2 11.7 1114 14 868 10.9 287 263 36 33 7.50 1.05 -0.12 -0.68 100
H N54H 1.49 1.44 14.9 14.4 1353 17 1083 13.6 438 398 55 50 7.50 1.05 -0.12 -0.66 120
N52H 1.46 1.42 14.6 14.2 1353 17 1067 13.4 422 390 53 49 7.50 1.05 -0.12 -0.66 120
N50H 1.44 1.39 14.4 13.9 1353 17 1043 13.1 406 374 51 47 7.50 1.05 -0.12 -0.66 120
N48H 1.42 1.37 14.2 13.7 1353 17 1027 12.9 390 358 49 45 7.50 1.05 -0.12 -0.66 120
N45H 1.37 1.32 13.7 13.2 1353 17 995 12.5 366 342 46 43 7.50 1.05 -0.12 -0.66 120
N42H 1.32 1.28 13.2 12.8 1353 17 955 12.0 342 318 43 40 7.50 1.05 -0.12 -0.66 120
N40H 1.28 1.25 12.8 12.5 1353 17 923 11.6 326 302 41 38 7.50 1.05 -0.12 -0.66 120
N38H 1.25 1.22 12.5 12.3 1353 17 899 11.3 310 287 39 36 7.50 1.05 -0.12 -0.66 120
N35H 1.22 1.17 12.2 11.7 1353 17 868 10.9 287 263 36 33 7.50 1.05 -0.12 -0.66 120
SH N54SH 1.49 1.44 14.9 14.4 1592 20 1083 13.6 438 398 55 50 7.50 1.04 -0.12 -0.66 150
N52SH 1.46 1.41 14.6 14.1 1592 20 1059 13.3 414 382 52 48 7.50 1.04 -0.12 -0.66 150
N50SH 1.44 1.39 14.4 13.9 1592 20 1043 13.1 406 374 51 47 7.50 1.04 -0.12 -0.66 150
N48SH 1.42 1.37 14.0 13.7 1592 20 1027 12.9 390 358 49 45 7.50 1.04 -0.11 -0.56 150
N45SH 1.37 1.32 13.7 13.2 1592 20 995 12.5 366 342 46 43 7.50 1.04 -0.11 -0.56 150
N42SH 1.32 1.28 13.2 12.8 1592 20 963 12.1 342 318 43 40 7.50 1.04 -0.11 -0.56 150
N40SH 1.28 1.25 12.8 12.5 1592 20 947 11.9 326 302 41 38 7.50 1.04 -0.11 -0.56 150
N38SH 1.25 1.22 12.5 12.2 1592 20 915 11.5 310 287 39 36 7.50 1.04 -0.11 -0.56 150
N35SH 1.22 1.17 12.2 11.7 1592 20 884 11.1 295 263 37 33 7.50 1.04 -0.11 -0.56 150
N33SH 1.17 1.13 11.7 11.3 1592 20 844 10.6 271 247 34 31 7.50 1.04 -0.11 -0.56 150
N30SH 1.13 1.08 11.3 10.8 1592 20 804 10.1 247 223 31 28 7.50 1.04 -0.11 -0.56 150
UH N54UH 1.49 1.44 14.9 14.4 1990 25 1083 13.6 438 398 55 50 7.50 1.03 -0.11 -0.50 180
N52UH 1.46 1.42 14.6 14.2 1990 25 1067 13.4 422 390 53 49 7.50 1.03 -0.11 -0.50 180
N50UH 1.42 1.39 14.2 13.9 1990 25 1043 13.1 406 374 51 47 7.50 1.03 -0.11 -0.50 180
N48UH 1.40 1.36 14.0 13.6 1990 25 1031 12.9 390 358 49 45 7.55 1.03 -0.11 -0.50 180
N45UH 1.36 1.32 13.6 13.2 1990 25 1003 12.6 366 342 46 43 7.55 1.03 -0.11 -0.50 180
N42UH 1.32 1.28 13.2 12.8 1990 25 971 12.2 342 318 43 40 7.55 1.03 -0.10 -0.50 180
N40UH 1.28 1.25 12.8 12.5 1990 25 923 11.6 326 302 41 38 7.55 1.03 -0.10 -0.50 180
N38UH 1.25 1.22 12.5 12.2 1990 25 907 11.4 310 287 39 36 7.55 1.03 -0.10 -0.50 180
N35UH 1.22 1.17 12.2 11.7 1990 25 860 10.8 287 263 36 33 7.55 1.03 -0.10 -0.50 180
N33UH 1.17 1.13 11.7 11.3 1990 25 852 10.7 271 247 34 31 7.55 1.03 -0.10 -0.50 180
N30UH 1.13 1.08 11.3 10.8 1990 25 812 10.2 247 223 31 28 7.55 1.03 -0.10 -0.50 180
EH N48EH 1.40 1.36 14.0 13.6 2388 30 1051 13.2 390 358 49 45 7.60 .03 -0.10 -0.45 200
N45EH 1.36 1.32 13.6 13.2 2388 30 1031 12.9 366 342 46 43 7.60 1.03 -0.10 -0.45 200
N42EH 1.32 1.28 13.2 12.8 2388 30 970 12.2 342 318 43 40 7.60 1.03 -0.10 -0.45 200
N40EH 1.28 1.25 12.8 12.5 2388 30 947 11.9 326 302 41 38 7.60 1.03 -0.10 -0.45 200
N38EH 1.25 1.22 12.5 12.2 2388 30 915 11.5 310 287 39 36 7.60 1.03 -0.10 -0.45 200
N35EH 1.22 1.17 12.2 11.7 2388 30 884 11.1 287 263 36 33 7.60 1.03 -0.10 -0.45 200
N33EH 1.17 1.13 11.7 11.3 2388 30 860 10.8 271 247 34 31 7.60 1.03 -0.10 -0.45 200
N30EH 1.13 1.08 11.3 10.8 2388 30 820 10.3 247 223 31 28 7.60 1.03 -0.10 -0.45 200
AH N45AH 1.36 1.32 13.6 13.2 2786 35 995 12.5 366 342 46 43 7.60 1.03 -0.10 -0.45 230
N42AH 1.32 1.28 13.2 12.8 2786 35 970 12.2 342 318 43 40 7.60 1.03 -0.10 -0.45 230
N40AH 1.28 1.25 12.8 12.5 2786 35 947 11.9 326 302 41 38 7.60 1.03 -0.10 -0.45 230
N38AH 1.25 1.22 12.5 12.2 2786 35 915 11.5 310 287 39 36 7.60 1.03 -0.10 -0.45 230
N35AH 1.20 1.17 12.0 11.7 2786 35 883 11.1 287 263 36 33 7.60 1.03 -0.10 -0.45 230
N33AH 1.17 1.11 11.7 11.1 2786 35 844 10.6 271 239 34 31 7.60 1.03 -0.10 -0.45 230
N30AH 1.13 1.07 11.3 10.7 2786 35 812 10.2 247 215 31 27 7.60 1.03 -0.10 -0.45 230
Note ：

(1) The temperature ranges for calculating the temperature coefficient are divided as follows: H grade and below, ΔT: 20–100°C; SH grade and above, ΔT: 20–150°C. The temperature coefficient is for reference only; for detailed demagnetization curves please contact our sales staff.

(2) The maximum operating temperature refers to the highest temperature at which the flux loss is ≤5% after the following condition: a standard cylindrical sample Ø10×7 mm (or one with diameter D and height L such that L/D = 0.7) is heated in open-circuit at high temperature for 2 hours and then returned to room temperature, comparing the flux after heating to the flux at room temperature before heating.

Production Processes

  • 01
    Proportioning
  • 02
    Strip casting
  • 03
    Hydrogen decrepitation
  • 04
    Powdering
  • 05
    Molding & Pressing
  • 06
    Sintering & Annealing
  • 07
    Inspection
  • 08
    Cutting/Machining
  • 09
    Surface treatment
  • 10
    Magnetization & Packaging

Electroplating Capabilities

Plating Type Plating Symbol Color Plating Thickness (μm) Plating Surface Protection Capability Comparison Recommended operating temperature (°C)
Neutral Salt Spray Test Humid Heat Test Pressure Test (PCT)
Nickel/Barrel Plating Ni Bright Silver 10 - 20 ★★★★★ ★★★★★ ★★★★★ ≤200
Nickel/Hanger Plating Ni Bright Silver 10 - 20 ★★★★ ★★★★★ ★★★★★ -
Trivalent Chromium Zinc/Blue-White Zinc/Barrel Plating Zn Blue-White 5 - 10 ★★★★ ★★★ ★★★ ≤160
Trivalent Chromium Zinc/Blue-White Zinc/Hanger Plating Zn Blue-White 5 - 10 ★★★ ★★★ ★★★ -
Trivalent Chromium Color Zinc/Barrel Plating Color Zn Bright Color 5 - 10 ★★★ - ★★★ -
Trivalent Chromium Color Zinc/Hanger Plating Color Zn Bright Color 5 - 10 ★★★ - ★★★ -
Nickel + Electroless Nickel/Barrel Plating Ni + Chemical Ni Dark Silver 12 - 20 ★★★★★ ★★★★★ ★★★★ ≤200
Nickel + Electroless Nickel/Hanger Plating Ni + Chemical Ni Dark Silver 12 - 20 ★★★★ ★★★★★ ★★★★ -
Nickel + Chromium Ni + Cr Dark Black 12 - 20 ★★★★ ★★★★★ ★★★★★ ≤200
Teflon Teflon Black-Gray - ★★★ ★★★ ★★★ ≤200
Nickel + Black Nickel + Extra Black Nickel Ni + Black Ni Black 12 - 20 ★★★★★ ★★★★★ ★★★★★ -
Nickel + Tin Ni + Sn Bright Silver 12 - 20 ★★★★ ★★★★★ ★★★★★ -
Nickel + Silver Ni + Ag Silver 12 - 20 ★★★★ ★★★★★ ★★★★★ -
Nickel + Gold Ni + Au Gold 10 - 20 ★★★★ ★★★★★ ★★★★★ -
Epoxy Resin EPOXY Black 10 - 20 ★★★★★ ★★★★★ ★★★★ ≤130
Copper-Nickel Plating/Copper Plating + Epoxy Resin POXY Black 15 - 25 ★★★★★ ★★★★ ★★★ ≤120
Phosphatization/Passivation phosphatization/Passivation <Black-Gray 1 - 3 —— —— —— ≤240
Nano Coating Nano coating Bright Gray 20 - 30 ★★★★★★★ ★★★★★★★ ★★★★★★★★ ≤350