443
WROUGHT IRON.
No. 7410.
Norway Iron.
Diameter, 1".129.
Sectional area, 1 square inch.
Gauged length, 10".
Applied loads per square inch.	In gauged length.		Remarks.
	Elonga- tion.	Set.	
Pounds.	Inches.	Inch.	
1,000	0.	0.	
5,000	.0013	0.	
10,000	.0031	.0001	
15,000	.0047		
20,000	.0064	.0001	
25,000	.0083		
26,000	.0091		
*’26,200			
26;300	.3350		
29,000	.48		
30,000	.51		
31,000	.55		
32,000	.62		
34,000	.74		
36,000	.90		
38,000	1.10		
40,000	1.50		
41,800	2.90		Tensile strength.
0	3.63		—36.3 per cent.
Elongation of inch sections: ".28, ".36, ".97*, ".41, ".32, ".28, ".28, ".27, ".25, ".21.
Diameter at fracture, ".60; area, .283 square inch.
Contraction of area, 71.7 per cent.
Appearance, fibrous.