PIVOT SOCKETS--15־POUNDER GUN MOUNTS,
108
No. 7234.
Marks, ps is Diameter, ".505.
Sectional area, .20 square inch. Gauged length, 2".
Applied loads per square inch.	Elongation per inch.	Successive elongation per inch.	Permanent set.	Successive permanent. set.	Remarks.
Pounds. 1,000 5,000 10,000 20,000 21,000 22,000 23.000 24.000 25.000 26.000 58,400	Inch. 0. .00010 .00030 .00075 . 00095 .00145 .00235 .00315 .00400 .00485	Inch. 0. .00010 . 00020 .00045 .00020 .00050 .00090 . 00080 . 00085 . 00085	Inch. 0. 0.	Inch. 0. 0.	Initial load. Elastic limit. Tensile strength.
					
					
						
					
					
					
						
					
					
58,400 20,000 .0750 .00075 .025 9.5
General summary.
Tensile strength per square inch of original section................. .......pounds..
Elastic limit per square inch of original section...............................-do...
Elongation per inch after rupture...............................................inch..
Elongation per inch under strain at elastic limit...............................do...
Reduction in diameter at point of rupture.......................................do...
Reduction in area after rupture, per cent of original section...................
Position of rupture...........................................-.......- ־.......־ ־  •j>5 from neck
Character of broken suface...................granular, silvery luster, silky spot at circumference
Elongation of inch sections......................................................... ".08*, ".07
No. 7235.
Marks, pg“
Diameter, ".505.
Sectional area, .20 square inch. Gauged length, 2".
Applied loads per square inch.	Elongation per inch.	Successive elongation per inch.	Permanent set.	Successive permanent set.	Remarks.
Pounds. 1,000 5,000 10,000 20,000 29.000 30.000 31.000 32.000 33.000 34.000 35.000 71.000	Inch. 0. .00015 .00030 .00070 .00110 .00115 .00715 . 00775 .00850 .00950 .01040	Inch. 0. .00015 .00015 . 00040 .00040 . 00005 .00600 .00060 .00075 .00100 .00090	Inch. 0. 0.	Inch. 0. 0.	Initial load Elastic limit Tensile strength.
					
					
					
					
					
					
					
					
					
					
General summary.
.....................pounds.. 71,000
..........................do... 30,000
.........inch.. .1450
...................do... .00115
....................do...	.045
־.־............................16.9 
......................85.״  from neck
*granular, silky spot at circumference
14.״ ,*15.״...........................
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, percent of original section,
Position of rupture.....................................
Character of broken surface.............................
Elongation of inch sections.............................