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METALLURGY   OF   CAST   IRON.
TABLE   39  CALCULATING  THE   SILICON.
Brand and Grade of Iron Used.	Weight of Iron Used.	Percentage        Total Points of Silicon.                   Silicon. ........ -------------- .~ .......
No. i Flora                      ......	600 Ibs.         3i	.     ....   . 2.80          =          1680.00
No. 3 Clara   .....................	400 Ibs.        x	2.26          =           904.00
No. 6 Frank....           ........	300 Ibs.        x	I-5                     450.00
Shop scrap   .              ........	200 Ibs.         x	i. 80          =            360.00
Yard scrap ......................	500 Ibs.        A	1-25          =           625.00
2,000 Ibs.
4019.00
TABLE   40----PERCENTAGES  OF   SULPHUR,  MANGANESE,  PHOSPHORUS AND
CARBON   IN  THE  DIFFERENT   IRONS.
Brand and Grade of Iron Used.	Weight of Iron Used.	Sulphur.	Manganese.	Phosphorus.	T. Carbon.
No. i Flora...	600 Ibs.	.01	.60	-30	3 '50
No. 3 Clara...	400 Ibs.	.01	.70	.40	3-?o
No. 6 Frank.	300 Ibs.	03	.So	50	3-90
Shop scrap...	200 Ibs.	05	.60	.40	4.00
Yard scrap...	500 Ibs.	.07	.50	.60          i          4.10	
TABLE   41RESULTS  OF  COMPUTATION   OF  TABLES   39  AND  40.
4019.00 pts. silicon          -:-   2,000 Ibs.
64.00 pts. sulphur -:-   2.000 Ibs.
1250.00 pts. manganese -:-   2,000 Ibs.
87.00 pts.'phosphorus -:-   2,000 Ibs.
38400.00 pts. carbon         -:-   2,000 Ibs.
2.00   per cent silicon.
.032       "          sulphur.
.62         "          manganese.
435       "         phosphorus.
3. So         "          carbon.
TABLE  42  METHOD   OF   CHECKING  TABLE   39.
Brand and Grade of Iron Used.	Per cent of Iron Used.	Per cent of Silicons.	Total per cent of Silicon in 100 Parts.
No. i Flora	}0                 X	2. So	S/j..oo
No. ^ Clara   .	20               \	2.2<n	45.20
No. 6 Frank ........... Shop scrap     ......	15            x ro           x	1.50 i. So	22.50 iS.oo
Yard Scrap ...............	25           x	i.a.S	31.25
100 parts
One part equals about 2.00 per cent of silicon. Hiels Chemical Co., Isabella Furnace, Iron Gate Furnace, Iroquois Iron Co., Illinois Steel Co., Jefferson Iron Co., Kittan-ning Iron & Steel Co., C. A. Kelly Plow Co., Lebanon Furnace, Longdale Iron Co., Lackawanna Iron & Steel Co., Logan Iron........................   16,720     "                                     t-