ON STRENGTH AND PROPERTIES OF CAST IRON, 
No. 2 Iron. 
Experiment 6. 
Depth of bar, 1-007 
Breadth do. 1-°009 
Distance between 
supports 2 ft. 3 in. 
Weight in Ibs. 
Deflection in 
inches, 
Permanent Set. 
Temperature 
Fahrenheit. 
. Ultimate deflec- 
on = *386. 
Broke in hot water. 
TaBLE XVIII.—Coed-Talon Hot Blast. 
No. 2 Iron. 
Experiment 7. 
Depth of bar, 1-038 
Breadth do. 1-017 
Distance between 
supports 2 ft. 3 in. 
| Weight in lbs. 
Deflection in 
inches. 
Permanent Set. 
Temperature 
Fahrenheit. 
| 
112 + {186 
009/187 
‘016/188 
026) ... 
041) ... 
broke 
wee 
S 
~ 
094 
336 |- 
448 |-198 
560 |-263 
672 |-333 
700} ... 
—_ 
Ig 
< 
bo 
-". Ultimate deflec- 
tion = °346. 
Broke in hot water. 
No. 2 Iron. 
Experiment 8. 
No. 3 Iron. 
Experiment 9. 
4i1 
No. 3 Iron. 
Experiment 11. 
Depth of bar, 1-019 Depth of bar, +993||Depth of bar, -986 
Breadth do. 1-015 
Distance between 
supports 2 ft. 3 in. 
Weight in Ibs. 
Deflection in 
inches. 
Permanent Set, 
Temperature 
Fahrenheit. 
122 
224 |- 
336 | - 
448 |- 
560 | - 
672 | -255 
784 | +314 
868 |broke' 
038 
190 
ee les) 
.. Ultimate defiec- 
tion = *356. 
Broke in hot water. 
Breadth do. “S91 
Distance between 
supports 2ft. Zin. 
ee Bek EEE Me AEE, 
Weight 
in Ibs. 
800 broke 
Temp. 
212° 
Broke in boiling 
water. 
No. 3 Iron. 
Experiment 10. 
Depth of bar, “986, 
Breadth do 1-000 
Distance between 
supports 2 ft. 3 in. 
Weight |, 
in Ibs. | 7°™P- 
811 broke} 600° 
Breadth do. +997 
Distance between 
supports 2ft. 3in. 
889 broke] 600° 
Broke in melted 
lead. 
enn 
No. 2 Iron. 
Experiment 12. 
Depth of bar, 1-034 
Breadth do. 1-010 
Distance between 
supports 2ft, 3in. 
Weight in Ibs. 
896 broke 
Broke in melted 
lead, 
Bar susceptibly 
red in the dark. 
i This iron presents an appearance of greater ductility and softness than the No. 3. 
, cold blast. From the blue tinge which the fracture exhibits, it is evidently an iron 
: possessing the powers of being worked to a greater degree than the cold blast. 
Results reduced to those of bars 1-00 inch square, and 2 feet 
4 3 inches between the supports. 
" : i Product bXa 
i Temperature | Modulus of oe hemes or power of 
Fahrenheit. elasticity. @. (a) resisting 
. 2 impact. 
Experiment 6th, bar No. 2 iron ...| 138° — 134° | 13046200 875-7 +389 340°6 
Experiment 7th, bar No. 2 do. ...| 186 —188 | 11012500 635°8 359 229°3 
Experiment 8th, bar No. 2 dq ...| 196 —190 | 13869500 823°6 363 298-9 
Experiment 9th, bar No. 3 do. ... 212° te ee, 818-4 Ee. wanince 
‘Experiment 10th, bar No. 3 do. ... 600 Sbescotents | S841 7 4 eecee 
‘Experiment 11th, bar No. 3 do. ... 600 aveennasacerr!{s Qiligmeynnlenely! , Pies 
f Mean...... paket eeeccscencee | 8758 Bene suarat 
Se | ee ee aa ee [See Se 
Experiment 12th, bar No. 2 iron...| Rea in the dark | sessessse.s. 829-7 : 
