INTERNAL STRAINS IN GUN FORGINGS.
228
Tube 11272 B3 BM—A.
Breech Slice.
Annealed at 150° F.
State of internal strains and stresses at different phases of the slice.
slice intact.
Interior diameter of slice, 4".72; exterior diameter of slice, 10".42.
3 4
Rings.	Present mean diameters.	Strains.		Stresses per square inch.	
		Tension.	Compres- sion.	Tension.	Compres- sion.
1		Inches. 4.85005 5.6501 9.6492 10.27315	Inch.	Inch. .0048	Pounds.	Pounds. 29,700 17,300
2				.00325		
3			.0054 . 0007		16,800 2,000	
						
					
Rings 1 and 4 detached; rings 2 and 3 in the slice.
Interior diameter of slice, 5".5; exterior diameter of slice, 9".8.
3	4
Rings.	Present mean diameters.	Strains.		Stresses per square inch.	
		Tension.	Compres- sion.	Tension.	Compres- sion.
	Inches. 4.85485 5.6491 9.6486 10.27245	Inch.	Inch.	Pounds.	Pounds.
2				. 00425		22,600
3			.0048		14,900	
					
					
RINGS ALL PETACHED.
	5.65335 9.6438			
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