INTERNAL STRAINS IN GUN FORGINGS.
224
Tube 11272 B3.
Muzzle Slice.
Muzzle crop end after second annealing at 360° F.
State of internal strains and stresses at different phases of the slice.
SLICE INTACT.
Interior diameter of slice, 4".27; exterior diameter of slice, 8".92.
3 ¿
Rings.	Present mean diameters.	Strains.		Stresses per square inch.	
		Tension.	Compres- sion.	Tension.	Compres- sion.
1. 		Inches. 4.4186 5.1469 7.1359 ־8.7701	Inch.	Inch. .0041 .00225	Pounds.	Pounds. 27,800 13,100
					
		.0028		11,800	
4	 	:				.0026		8,900
					
Rings 1 and 4 detached; rings 2 and 3 in the slice.
Interior diameter of slice, 5".00; exterior diameter of slice, 7".30.

Rings.	Present mean diameters.	Strains.		Stresses per square inch.	
		Tension.	Compres- sion.	Tension.	Compres- sion.
•	Inches. 4.4227 5.1464 7.18555 8.7727	Inch.	Inch.	Pounds.	Pounds.
			.00275		16,000
		.00245		10,300	
					
					
RINGS ALL DETACHED.
	5.14915 7.1331