6-INCH R. F. GUNS
28
Jacket.
No. 7305
Marks, !!1rfoJ Diameter, ".564.
Sectional area, .25 square inch. Gauged length, 3".
Remarks.
Successive
permanent
set.
Permanent
set.
Elongation per inch.	Successive elongation per inch.
Inch.	Inch.
0.	0.
.000067	.000067
.000300	.000233
.000667	.000367
.001000	.000333
.001333	.000333
.001567	.000234
. 001700	.000133
.001867	.000167
.002067	. 000200
.002333	. 000266
.002600	. 000267
.003067	. 000467
.004833	.001766
	
Applied loads per square inch.
Inch.
0.
0.
Elastic limit.
Tensile strength.
Pounds. 1,000 5,000 10,000 20,000
30.000
40.000
46.000
50.000
55.000
56.000
57.000
58.000
59.000
60.000 101,600
General summary.
.pounds.. 101,600
....do... 55,000
...inch..	.1833
....do... .001867
....do...	.154
......... 47.2
.. ".95 from neck ...........silky
*32״ ,14.״ ,09.״ ...
Tensile strength per square inch of original section....
Elastic limit per square inch of original section.......
Elongation per inch after rupture.....:־.־־־•:..........
Elongation per inch under strain at elastic limit.......
Reduction in diameter at point of rupture...............
Reduction in area after rupture, per cent of original section
Position of rupture.....................................
Character of broken surface.............................
Elongation of inch sections.............................