INTEENAL STRAINS IN GUN FORGINGS.
806
Tube 11791 Bx.
After annealing at 650° F.
Breech Slice.
State of internal strains and stresses at different phases of the slice.
slice intact.
Interior diameter of slice, !".76; exterior diameter of slice, 10".43.
Rings.	Present mean diameters.	Strains.		Stresses per square inch.	
		Tension.	Compres- sion.	Tension.	Compres-־ sion.
	Inches. 4.8990 5.64625 9.65745 10.28535	Inch.	Inch. .0037 .0034	Pounds.	Pounds. 22,700 18,100
					
		.00305 . 00055		9,500 1,600	
			'		
1 								
Rings 1 and 4: detached; rings 2 and 3 in the slice.
Interior diameter of slice, 5".50; exterior diameter of slice, 9".80.
i	3 2	 	 r 1 	1־ J	L		i		
Rings.	Present mean diameters.	Strains.		Stresses per square inch.	
		Tension.	Compres- sion.	Tension.	Compres- sion.
	Inches. 4.9027 5.6449 9.65675 10.2848	Inch.	Inch.	Pounds.	Pounds.
			. 00475		25,200
		. 00235		7,300	
					
					
RINGS ALL DETACHED.
	5.64865 9.6544