Metallurgy Of Cast Iron

THE MELTING POINT OF CAST IRON.
353
TABLE 79.—CAST IRONS.
1 Melting Point. Com. Carbon. Graphite. Silicon. of Mflj a « CS OJ S* 05 il £a u 3 1 "3 03 Remarks.
49 50 5i 52 53 54 8 2000°F 1990 2OIO 200O 2O30 203O 204O 2I7O 4.67 4.20 4.08 3-90 3-62 348 3-40 1.63 •03 .20 ... .... 2 27 •57 :! •75 .72 •47 .42 1.46 .22 •33 .06 .66 .14. .09 .07 •50 .266 :3J .240 -93 .190 .196 .092 .044 .040 .040 • 030 .026 .032 .029 .032 Cast into chill roll (Mr. West) Cast into chill roll (Mr. West) Cast into dry saud. Ca.it into chill roll (Mr. West) Cast into dry sand. Cast into dry sand. Cast into dry sand. Cast in to dry sand.
S7 2210 1.60 316 •59 •25 .271 .048 No. 48 in sand rolls ( Mr. West)
58 2250 i-57 .66 •31 •237 .040 No. 49 in sand rolls (Mr. West)
59 60 61 224O 2250 226O 1.22 1. 2O •I? 290 357 1.69 •75 2.09 •47 .66 •43 .274 .248 .272 .037 .030 .042 Cast into dry sand. No. 51 in sand rolls (Mr. West) Cast into green sand.
6-> 2080 i-95 128 1.64 .98 Re-melted ferro-silicon No.
5, cast into chill roll (Mr. West).
63 208O 1.81 1.36 11.70 I.OO Re-melted ferro-silicon No
5, cast into sand roll (Mr.
West).
' 'For a better comparison of the melting points of the same irons cast into sand and into chills, as made by Mr. West, the following- table is subjoined:
TABLE 80.
No. Combined Carbon. Graphite. Fracture. Melting Point.
57 1.60 3-i6 Gray 22IO°F.
49 4.67 •03 White 200O Same ladle.
5S 50 1-57 4.20 2.90 .20 Gray White 2250 1990 Same ladle.
60 52 1.20 3-90 2.90 .16 Gray White 2250 200O Same ladle.
TABLE 8l.— ALLOYS AND STEEL.
d fc Melting Point. rt U Silicon. Manganese. , 8 Ji f| Remarks.
64 2350 2280 1.18 1.32 .21 .29 •49 1.27 3.40 6.21 39-02 Steel. Steel. Fer rotungsten .
67 2240 11.84 Ferrotungsten.
68 2255 5.02 1.65 81.40 Ferromanganese.
60 22 IO 6 48 .14 44-59 Ferromanganese.
70 24OO 6.80 62.70 Ferrochrom.
71 2230 6 40 I9.2O Ferrochrom .
72 226o i. 20 19.10 Ferrochrom.
73 2l8o 1.40 5-4° Ferrochrom.