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| Keywords: Magnetization curves.svg Magnetization curves of 9 ferromagnetic substances; a plot of the flux density B as a function of magnetizing field H They all show saturation the levelling off of B with increasing H that is characteristic of ferromagnetic substances The graph was traced from a 1917 electronics book so the accuracy of the data may not be equal to modern measurements The substances are 1 standard sheet steel annealed 2 silicon sheet steel annealed Si 2 5 3 soft steel casting 4 tungsten steel 5 magnet steel 6 cast iron 7 nickel 99 8 cast cobalt 9 Magnetite Fe<sub>2</sub>O<sub>3</sub> Tracing of graph downloaded from http //books google com/books id z0IOAAAAYAAJ pg PA84 Charles Steinmetz 1917 Theory and Calculation of Electric Circuits McGraw-Hill New York USA p 84 fig 42 on Google Books Charles Proteus Steinmetz 1917 Public domain - Steinmetz died 1923 PD-old Magnetization curves | ||||
