Relation between physical and magnetic hardness of certain carbon steels . temperature for two or three hours and cooled in furnace. 8:55 200 150 9:10 330 275 9:20 500 442 9:40 700 656 10:00 700 656 10:30 700 656 11:00 700 656 11:30 700 656 1S:00 690 645 12:30 705 660 12:40 680 605 12:50 655 580 1:00 630 555 1:55 480 390 j£b /bb sxa -u iifr St-tc di^;« .e av:i iks-- J ^ :sr. Di:^ 0£: cc;v C Ji; oac .? w V ^ s^ 1 W X Oo::i -?^ • -• r dec «»#:-?.-:. 3-:j. 7. Speciffieps E. Kept at a constant heat for two or three hours and then cooled in water. Heat hegan at 8:55. 9:15 £00 150 9:25 300 240 9:35
Relation between physical and magnetic hardness of certain carbon steels . temperature for two or three hours and cooled in furnace. 8:55 200 150 9:10 330 275 9:20 500 442 9:40 700 656 10:00 700 656 10:30 700 656 11:00 700 656 11:30 700 656 1S:00 690 645 12:30 705 660 12:40 680 605 12:50 655 580 1:00 630 555 1:55 480 390 j£b /bb sxa -u iifr St-tc di^;« .e av:i iks-- J ^ :sr. Di:^ 0£: cc;v C Ji; oac .? w V ^ s^ 1 W X Oo::i -?^ • -• r dec «»#:-?.-:. 3-:j. 7. Speciffieps E. Kept at a constant heat for two or three hours and then cooled in water. Heat hegan at 8:55. 9:15 £00 150 9:25 300 240 9:35 460 400 9:45 600 545 10:00 680 605 10:20 780 745 10;50 800 762 11:20 800 762 11:50 800 762 12:30 815 765 1:00 800 730 (Eote:- In the drawing of the curves for the proceedingdata we started with the first reading of the temperatureon the pyrometer and not with the original temperature of theSpa cimens). C^s ^..... a?.: if atv .0? c»s:ox aav x>b o?.;oi Sdv ooe os:xr Sdv oce od:xi a^iV axe o£:::i ed;^ :iol &*viur> ftff^ lo yilmnxh »di al idol).
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