ON STRENGTH AND PROPERTIES OF CAST IRON. 387 
Tas. V.—English Iron.—Elsicar No. 1 Pig Iron, Cold Blast. 
EXPERIMENT 1, EXPERIMENT 2, EXPERIMENT 3. | EXPERIMENT 4. 
Depth of bar, 1:033||Depth of bar, 1-042|\Depth of bar, 1:023)Depth of bar, 1:+016 
Breadth of do. 1°025||Breadth of do. 1:030)|Breadth of do. 1-006 Breadth ofdo. °990 
Distance between Distance between Distance between ‘Distance between 
supports, 4ft. 6in. || supports, 4ft. 6in, || supports 2ft. 3in. || supports 2ft, 3in, 
Weight of bar 5 ft.||Weight of bar 5 ft, 
168 | -444| -048 |] 168 | -410 
224 | -571| -044|) 448 | -182] -005 || 448] -141| -007 
: 280 | -740| -063 || 560 | -170| -008 || 560} -181| -010 
336 | -979!| -114|| 336 | -918| -090|| 672 | -215) -011)|) 672] -229) -018 
392 |1°185 | -148 |} 892 1-112] -122 || 784 | -260| -017 || 784] -276| 022 
448 |1-390| -190 || 448 |1°320} -161 || 896 | -310)| -025 |) 896} 330} -030 
476 |broke 476 |broke 952 |broke 952 | +355 
1008 |broke 
S 
to 
© 
long, 154 Ibs. long, 153 Ibs. 
: 3 3 3 é 3 Fs 3 
2 | 8 -2 | 8 so sie al lh so FO ee ae 
eldelfe) 2 ldalfe) 2 eal el = lael ds 
S (Se fel 2 1sa| sel S  eet\ se] 2 lss| se 
Slei/Sc| Beal Sz] Bl eel/ Sz Blea / Fs 
o o as o o qs o o Qs C) o qs 
Pies leh ele |e) & aol el eis. | 8 
56 | +151 56 | 129] ... 112.| -030} ... 112] 032] ... 
112 | -291| -030]| 112 | -260| -010|| 224 | -062| ... 224) 066) + 
5 336 | 095) + 3836 | +101] -005 
bo 
bo 
_ 
Oo 
1 
_ 
r= 
eer} 
Ne 
.*. Ultimate de-||/.°. Ultimate de-|}.*. Ultimate de-||’.°. Ultimate de- 
flection = 1:496.|| flection = 1°424. || flection = ‘334.}| flection = ‘381. 
Broke 1 inch from || Broke at the cen- || Broke 3 of an inch || Broke § of an inch 
the centre. tre. from the centre. || from the centre. 
It must be observed that the Elsicar is entirely cold blast iron, and is here 
compared with the Milton hot blast. Both irons are from the same ores, and are 
generally obtained under the same circumstances. In their relative properties there 
are, however, some slight discrepancies, arising from an admixture of 5 per cent. of 
Cumberland ironstone, introduced into the Milton iron during the process. The 
Elsicar is blown from coke, with cold blast, whilst the Milton is produced from 5 
parts coal and 1 part coke, with hot blast. 
This iron has a vitrified and glutinous appearance over the entire section of the 
fracture ; there is great uniformity,—the crystals being nearly the same in the centre 
as those next the outer skin of the bar. It has a grey colour, intermixed with blue. 
Its working properties are of the first order, the action of filing being accompanied by 
a soft adhesive sound. 
Results reduced to those of bars 1:00 inch square. 
Product 
: tae Breaking Ultimate 6X d,or 
Specific in Ibs. per | Weight deflection | power of 
gravity. square Ne ee (6). in inches | resisting 
: ; (d@). impact. 
Experiment Ist, bar 4 ft. 7056 ; 
6 in. between supports... 7-017 | 13410000 | 435-2 672°8 
Experiment 2nd, bar 4 ft. J x, 5 
6 in. between supports bin PAY) PAROROOO) 1A BGr6 se 
Mean... 7-030 | 13981000 | 430-4 652-2 
oS see CE ee ee 
Experiment 3rd, bar 2 ft. s 
ie din, between supports nts Ih] seis A Seed BD Me fs ides 3092 
xperiment 4th, bar 2 ft. ‘ 2 
3in. between supports va rere ech ay Pate 9868 3817 | 
Sage || kecceees * 345°4 
