Machinable soft magnetic composite

Fluxtrol 50

Excellent performance across a wide frequency range

Fluxtrol 50 provides excellent performance over a wide range of frequencies. The material has good mechanical strength, machinability and thermal conductivity.

Note: There are many variables involved in an induction process. In order to utilize the fullest potential of our product, you must help narrow down the parameters you are operating with. Each grade of Fluxtrol material has its own distinctive properties that are beneficial to a certain range of electrical and design parameters.

Contact Fluxtrol Inc. to receive more information about which material is right for you.

To buy Fluxtrol 50, contact us or request pricing and we will be in touch shortly.

Fluxtrol 50 on common coil styles

Typical induction coil configurations where Fluxtrol 50 is applied as a magnetic flux controller.

2 Turn O.D. coil with Fluxtrol 50
2 Turn O.D.
Hair Pin coil with Fluxtrol 50
Hair Pin
I.D. Multi Turn coil with Fluxtrol 50
I.D. Multi Turn
Pancake coil with Fluxtrol 50
Pancake
I.D. Single Turn coil with Fluxtrol 50
I.D. Single Turn
Split and Return coil with Fluxtrol 50
Split and Return
Transverse Flux coil with Fluxtrol 50
Transverse Flux

Fluxtrol 50 properties

PropertyUnitsFluxtrol 50
µr initialperpNone35
µr maximumperpNone55
µr initialparNone20
µr maximumparNone22
BsT1.4
ρΩ m3
κperpW/m-K8.4
κparW/m-K3.6
CTEperp1/K1.5 X 10-5
CTEpar1/K1.5 X 10-5
CpJ/g-°C0.47
Densityg/cm36.2
HardnessD scale90
Flexural StrengthperpMPA30.7
Flexural StrengthparMPA34.9
ModulusperpTangent 0.07% – MPA20,400
ModulusparTangent 0.07% – MPA20,800

perp = perpendicular and par = parallel to the pressing direction. Values are typical.

Fluxtrol 50 graphs

Fluxtrol 50 B-H Curve

Fluxtrol 50 B-H Curve

View data table
H (A/m)BperpBpar
2000.005
5000.030.012
10000.0640.025
20000.1330.053
30000.2050.081
40000.2730.109
50000.3340.135
60000.3880.164
80000.4790.218
100000.5540.27
120000.6170.318
150000.6960.385
200000.7950.483
250000.8720.565
300000.9340.634
350000.9840.694
400001.0270.747
500001.0960.832

Fluxtrol 50 µᵣ vs H

View data table
H (A/m)µrperpµrpar
20042
5004720
10005121
20005422
30005522
40005422
50005322
60005122
80004822
100004421
120004121
150003720
200003219
250002818
300002517
350002216
400002015
500001713

Fluxtrol 50 Losses vs Flux Density

View data table
Pv = aB2(1-B/b)f + cB2f2
SymbolDescription
PvPower Density (W/cm3)
BMagnetic Flux Density (T)
fFrequency (kHz)
a, b, cConstants
Fluxtrol 50 ConstantsValue
a1.96
b1.8
c0.001

Fluxtrol 50 Losses vs Frequency

View data table
Pv = aB2(1-B/b)f + cB2f2
SymbolDescription
PvPower Density (W/cm3)
BMagnetic Flux Density (T)
fFrequency (kHz)
a, b, cConstants
Fluxtrol 50 ConstantsValue
a1.96
b1.8
c0.001

Fluxtrol 50 Stress-Strain Curve

View data table
Flexure Strainperp (mm/mm)Flexure Stressperp (MPA)Flexure Strainpar (mm/mm)Flexure Stresspar (MPA)
0.000000.00.000000.0
0.000616.70.000609.1
0.0011917.50.0011920.2
0.0018024.80.0018028.1
0.0024028.50.0023932.1
0.0029930.10.0030034.2
0.0035930.70.0036034.9
0.0042030.30.0041934.1
0.0049928.70.0050030.4
0.0060024.30.0060024.0
0.0074917.10.0074916.8
0.0090011.50.0088912.6

Fluxtrol 50 stock sizes

Rounds / billets

Size in InchesSize in Millimeters
.50 Ø x 2.003.50 Ø x 2.0012.7 Ø x 50.889.0 Ø x 50.8
.67 Ø x 2.003.50 Ø x 2.5017.0 Ø x 50.889.0 Ø x 63.5
.75 Ø x 2.004.00 Ø x .7519.0 Ø x 50.8101.5 Ø x 19.0
1.00 Ø x 2.004.00 Ø x 1.0025.4 Ø x 50.8101.5 Ø x 25.4
1.00 Ø x 3.004.00 Ø x 2.0025.4 Ø x 76.2101.5 Ø x 50.8
1.25 Ø x 2.004.50 Ø x 1.0031.7 Ø x 50.8114.3 Ø x 25.4
1.25 Ø x 3.004.50 Ø x 2.0031.7 Ø x 76.2114.3 Ø x 50.8
1.50 Ø x 2.005.00 Ø x .2538.1 Ø x 50.8127.0 Ø x 6.3
1.50 Ø x 3.005.00 Ø x .7538.1 Ø x 76.2127.0 Ø x 19.0
1.75 Ø x 2.005.00 Ø x 1.0044.5 Ø x 50.8127.0 Ø x 25.4
1.75 Ø x 3.005.00 Ø x 2.0044.5 Ø x 76.2127.0 Ø x 50.8
2.00 Ø x 2.005.50 Ø x 1.0050.8 Ø x 50.8140.0 Ø x 25.4
2.00 Ø x 3.005.50 Ø x 1.2550.8 Ø x 76.2140.0 Ø x 31.7
2.30 Ø x 2.005.50 Ø x 2.0058.4 Ø x 50.8140.0 Ø x 50.8
2.30 Ø x 3.006.00 Ø x .2558.4 Ø x 76.2152.4 Ø x 6.3
2.30 Ø x 5.126.00 Ø x .7558.4 Ø x 130.0152.4 Ø x 19.0
2.50 Ø x 2.006.00 Ø x 1.0063.5 Ø x 50.8152.4 Ø x 25.4
2.50 Ø x 2.506.00 Ø x 2.0063.5 Ø x 63.5152.4 Ø x 50.8
2.50 Ø x 3.006.50 Ø x .7563.5 Ø x 76.2165.1 Ø x 19.0
2.76 Ø x 2.006.50 Ø x 1.0070.1 Ø x 50.8165.1 Ø x 25.4
2.76 Ø x 3.008.00 Ø x .2570.1 Ø x 76.2203.2 Ø x 6.3
3.00 Ø x 1.008.00 Ø x .5076.2 Ø x 25.4203.2 Ø x 12.7
3.00 Ø x 2.008.00 Ø x .7576.2 Ø x 50.8203.2 Ø x 19.0
3.00 Ø x 2.508.00 Ø x 1.0076.2 Ø x 63.5203.2 Ø x 25.4
3.00 Ø x 3.008.00 Ø x 1.5076.2 Ø x 76.2203.2 Ø x 38.1
3.50 Ø x 1.008.00 Ø x 2.0089.0 Ø x 25.4203.2 Ø x 50.8

Rectangular blocks

Size in InchesSize in Millimeters
.25 x 1.00 x 4.006.3 x 25.4 x 101.51.00 x 2.00 x 4.0025.4 x 50.8 x 101.5
.25 x 1.50 x 4.006.3 x 38.1 x 101.5.25 x 3.12 x 8.756.3 x 79.2 x 222.2
.50 x .50 x 4.0012.7 x 12.7 x 101.5.25 x 4.25 x 6.506.3 x 107.9 x 165.0
.50 x .75 x 4.0012.7 x 19.0 x 101.5.25 x 6.50 x 8.756.3 x 165.0 x 222.2
.50 x 1.00 x 4.0012.7 x 25.4 x 101.5.38 x 3.12 x 8.759.6 x 79.2 x 222.2
.50 x 1.50 x 4.0012.7 x 38.1 x 101.5.38 x 4.25 x 6.509.6 x 107.9 x 165.0
.63 x .63 x 4.0016.0 x 16.0 x 101.5.38 x 6.50 x 8.759.6 x 165.0 x 222.2
.63 x .75 x 4.0016.0 x 19.0 x 101.5.50 x 4.25 x 6.5012.7 x 107.9 x 165.0
.63 x 1.00 x 4.0016.0 x 25.4 x 101.5.50 x 6.50 x 8.7512.7 x 165.0 x 222.2
.63 x 2.00 x 4.0016.0 x 50.8 x 101.5.63 x 4.25 x 6.5016.0 x 107.9 x 165.0
.75 x .75 x 4.0019.0 x 19.0 x 101.5.63 x 6.50 x 8.7516.0 x 165.0 x 222.2
.75 x 1.00 x 4.0019.0 x 25.4 x 101.5.75 x 3.12 x 8.7519.0 x 79.2 x 222.2
.75 x 1.50 x 4.0019.0 x 38.1 x 101.5.75 x 4.25 x 6.5019.0 x 107.9 x 165.0
.75 x 2.00 x 4.0019.0 x 50.8 x 101.5.75 x 6.50 x 8.7519.0 x 165.0 x 222.2
1.00 x 1.00 x 2.0025.4 x 25.4 x 50.8.82 x 6.50 x 8.7520.8 x 165.0 x 222.2
1.00 x 1.00 x 3.0025.4 x 25.4 x 76.21.00 x 3.12 x 8.7525.4 x 79.2 x 222.2
1.00 x 1.25 x 4.0025.4 x 31.7 x 101.51.00 x 4.25 x 6.5025.4 x 107.9 x 165.0
1.00 x 1.50 x 4.0025.4 x 38.1 x 101.51.00 x 6.50 x 8.7525.4 x 165.0 x 222.2

Other sizes and near-net shapes available on request: request pricing or contact us.

Compare Fluxtrol SMC grades

GradeTypeStandout properties
Fluxtrol AMachinableHighest maximum permeability and lowest magnetic losses at low to intermediate frequencies (favorable direction); good strength and thermal conductivity; readily machinable. High magnetic and thermal anisotropy.
Fluxtrol 100MachinableHighest thermal conductivity, saturation flux density and flexural strength of the family; magnetic properties similar to Fluxtrol A with much less anisotropy; good machinability with sharp tools and high spindle speeds.
Fluxtrol 50MachinableExcellent performance over a wide range of frequencies; good mechanical strength, machinability and thermal conductivity.
Fluxtrol 25MachinableGood performance over a wide range of frequencies; best elasticity of the family; excellent machinability; reasonable thermal conductivity.
Ferrotron 559HMachinableHighest dielectric strength and lowest losses at high frequencies; nearly constant permeability across flux densities and frequencies; regarded by many as the most machinable grade.
Ferrotron 559H OriginalMachinableSimilar to Ferrotron 559H with nearly constant permeability over a wide range of flux densities and excellent machinability.
Alpha-form MF / LFFormableMagnetic particles in a thermal-curing epoxy binder; molded onto the coil and oven-cured for quick, efficient installation on coils with low tolerances.
Fluxtrol LRMLaminate replacementDirect replacement for laminations; near-net shapes, lower coil-copper temperatures and shorter build time than lamination stacks.

Properties are qualitative. Grade selection depends on frequency, coil geometry, cooling and process: ask an engineer.

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