Page:Proceedings of the Royal Society of London Vol 60.djvu/77

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F ig. 4.—Chromium steel. Or = 0*29 C =0*16 Si = 0 *07 Mn = 0*18 Fe = 99*30 /So-

F ig. 5.—Chromium steel. Cr = 1*18 C = 0 *27 Si = 0*12 Mn = 0*21 Fe = 98*22

Cr = 5 *44 C =0*27 Si = 0 *50 Mn = 0*61 Fe - 92 *68 Cr = 9*18 C =0*71 Si = 0 *36 Mn = 0*25 Fe = 89 *50