Effect of the rate of cooling on the magnetic and other properties of an annealed eutectoid carbon steel . 300 .1950 20 JF u r n a c ej cooled i 200 698 10 000 16 300 20 000 12 360 J 1610{ 1430 [ .1931 13 JF u r n a c e[ cooled I 90 633 9300 16 100 20 080 11 970 J 1540{ 1400 .1963 2. MAGNETIC PROPERTIES Fig. 2 gives the normal induction curves for low and mediumvalues of the magnetizing force, and Fig. 4 gives the curves for highvalues. It is interesting to observe the increase in the magnitudeof the induction for a given value of the magnetizing force
Effect of the rate of cooling on the magnetic and other properties of an annealed eutectoid carbon steel . 300 .1950 20 JF u r n a c ej cooled i 200 698 10 000 16 300 20 000 12 360 J 1610{ 1430 [ .1931 13 JF u r n a c e[ cooled I 90 633 9300 16 100 20 080 11 970 J 1540{ 1400 .1963 2. MAGNETIC PROPERTIES Fig. 2 gives the normal induction curves for low and mediumvalues of the magnetizing force, and Fig. 4 gives the curves for highvalues. It is interesting to observe the increase in the magnitudeof the induction for a given value of the magnetizing force, asthe rate of cooling is varied from air cooling to slow furnacecooling. The change in the values of the induction is most markedin the magnetizing force intervals, 10 to 20 gausses, and betweenthe rates for the lime-cooled and normal furnace-cooled speci-mens. The curves for specimens 18, 19, and 21 practically agreethroughout the entire range of the magnetizing force, and forhigher values the three corresponding curves are plotted as onecurve. Scientific Papers of the Bureau of Standards [Vol. 17. Magnetizing Force. Fig. 2.—Curves showing effect of rate of cooling annealed eutectoid carbon steel uponmagnetic induction for small and intermediate magnetizing forces
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