A P P E ND I X CSELECTED MAGNETICSTEEL DATA

THIS APPENDIX lists some performance data for selected materials. It should

be understood that these materials were not selected for any reason other than

availability within the author’s laboratory. The data listed are intended for use in

educational design examples. Table C.1 lists mass density that was measured by

volumetric and mass measurements on toroidal samples. It also suggests a maximum

allowed flux density. This is based on the point where the absolute relative perme-

ability drops to 1000. Table C.2 lists the data that characterize the mB�� function

described in Chapter 2. This data was taken from Shane and Sudhoff [1] using the

procedure and apparatus described therein. The corresponding B–H characteristics of

the materials are depicted in Figure C.1. It should be understood that steel grades

have performance which is a function of history and processing. Thus, not all M19

steel has the same magnetic characteristics.

2.5

2.0

1.5

1.0

0.5

0.00 100 200 300 400 500 600 700 800 900 1000

B, T

H, A/m

Hiperco 50

M47

M36

M19

M43

Figure C.1 B–H characteristics of selected steels.

443

Power Magnetic Devices: A Multi-Objective Design Approach, First Edition. S. D. Sudhoff.© 2014 by The Institute of Electrical and Electronics Engineers, Inc. Published 2014 by John Wiley & Sons, Inc.

REFERENCE

1. G.M. Shane and S. D. Sudhoff, Refinements in anhysteretic characterization and permeability modeling,IEEE Transactions on Magnetics, vol. 46, no. 11, pp. 3834–3843, 2010.

TABLE C.1 Silicon Steel Data

Material: M19 M36 M43 M47 Hiperco50r (kg/m3): 7402 7018 7291 7585 7845Bmxa(T): 1.39 1.34 1.39 1.49 2.07

TABLE C.3 Silicon Steel MSE Parameters (Bb = 1T, fb = 1 Hz)

Material: M19 M36 M43 M47 Hiperco50Gauge: 26 26 26 26 29Thickness (mm): 0.66 0.66 0.66 0.66 0.33r (mW-cm): 52 44 42 30 41kh (W/m3): 50.7 64.1 85.0 149 74.5a: 1.34 1.34 1.28 1.26 1.08b: 1.82 1.80 1.75 1.69 1.86ke(Am/V): 2.65�10−2 4.05�10−2 4.14�10−2 26.1�10−2 3.02�10−2

TABLE C.2 Silicon Steel mB�� Data

Material mr ak bk gkM19 32686 0.098611

0.00148230.0014350.001435

69.739731.949541162.27673.598553

1.3992.16191.24752.0377

M36 26673 0.225990.0431950.0311180.0043748

271.844397.3173842.294650.8058081

1.3506510

1.324155.38168

M43 24892 0.0728850.00395650.00254770.001

33.97431.141083.3794148.9292

1.41384.28489.99981.4731

M47 9875 0.0509190.039330.0010.001

18.0383920.612420.9336389115.8623

1.56133.37125.27151.3996

Hyperco50 43372 0.437080.00030680.000262790.00024516

17.133672.139356163.43481.476588

2.28361.36921.67723.494

444 APPENDIX C