263
INTERNAL STRAINS IN OKJN FORGINGS,
Breech Slice.
Interior diameter, 4".65; exterior diameter, 10".40. Original diameters of rings in the slice.
Rings.	Diameters.		
	C.	D.	Mean.
1		Inches. 4.7920 5.6600 9.6469 10.2482	Inches. 4.8039 5.6628 9.6478 10.2433	Inches. 4.79795 5.6614 9.64735 10.24575
2				
3				
4				
			
Rings 1 and 4 detached; rings 2 and 3 in the slice.
Rings.	Diameters.		
	C.	D.	Mean.
	Inches.	Inches.	Inches.
1 detached		4.7959	4.8073	4.8016
2		5.6585	5.6615	5.6600
3		9.6460	9.6468	9.6464
4 detached		10.2528	10.2387	10.24575
RINGS ALL DETACHED.
	5.6625	5.6653	5.6639
	9.6430	9.6424	9.6427
			
Breech strains released.
Rings.	Diameters.		
	C.	D.	Mean.
	Inch. + .0039 -.0015 -.0009 + .0046	Inch. + .0034 -.0013 -.0010 -.0046	Inch. +.00365 -.0014 -.00095 0.
			
			
			
			
SECOND TO THIRD PHASE.
2 detached		+ .0040	+.0038	+. 0039
3 detached		-.0030	-.0044	-.0037
FIRST TO THIRD PHASE.
2 detached		+ .0025	+.0025	+.0025
3 detached		-.0039	-.0054	-.00465