Stresses on the Elastic Properties of Steel. 221 
Table II. 
Results o£ Tests on Mild Carbon- and Nickel-Steel Shaftings 
in 
Flexure while under Torsion. 
MILD CARBON-STEEL. 
Speci- 
men. 
Shear 
applied, 
lbs. per 
sq. in. 
Elastic 
limit in 
flexure, 
lbs. per 
sq. in. 
Percent. 
of normal 
elastic 
limit. 
Modulus of 
elasticity 
in flexure, 
lbs. per 
sq. in. 
Per cent, 
ofnormal 
modulus 
of elas- 
ticity. 
Deflexion 
at elastic 
limit, 
in 
inches. 
Per cent. 
of 
normal 
deflexion. 
Per cent, 
of tor- 
sional 
elastic 
limit 
applied. 
1 

47000 
100 
32900000 
100 
•530 
100 

2 
22800 
41000 
87 
28400000 
86 
•490 
92 
75 
3 
30400 
31000 
67 
32400000 
88 
•420 
79 
100 
4 
38000 
22500 
48 
31500000 
95 
•280 
53 
125 
NICKEL-STEEL. 
1 

78500 
100 
33300000 
100 
•840 
100 

2 
15200 
68000 
90 
27700000 
83 
•820 
98 
40 
3 
22800 
84000 
83 
31500000 
94 
•840 
100 
60 
4 
30400 
59000 
77 
32300000 
97 
•830 
99 
80 
5 
38000 
34000 
70 
32300000 
97 
•750 
89 
100 
Table III. 
Relation between the Bending Moment in Torsion and the 
Bending Moment in Flexure in the Torsion-Flexure 
Tests of Steel Shafting. 
CARBON-STEEL. 
NICKEL-STEEL. 
Specimen. 
Torsional 
moment 
applied, 
in inch lbs. 
Bending 
moment 
in flexure, 
in inch lbs. 
Torsional 
moment 
applied, 
in inch lbs. 
Bending 
moment 
in flexure, 
in inch lbs. 
1 

14400 
19200 
24000 
15150 
12950 
9800 
7100 

9800 
14400 
18200 
24000 
24170 
21800 
20300 
18650 
17000 
2 
3 
4 
5... 
ill. Mag. S. 
6. Vol. 15. 
No. S6. Fe 
b. 1908. 
R 
