WROUGHT IRON.
418
No. 7407.
Common Refined 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.	Inches.	
1,000	0.	0.	
5,000	.0014	0.	
10,000	. 0032	0.	
15,000	.0050		
20,000	.0070	.0001	
25,000	.0088	.0001	
30,000	.0107	.0002	
31,000	.0111		Elastic limit.
31,500	.0375		
32,000	.0800		
33,000	.1910		
34,000	.23		
35,000	.26		
36,000	.29		
38,000	.37		
40,000	.46		
42,000	.59		
44,000	.75		
46,000	.99		
48,000	1.50		
48,220			
0	1.90		=19 per cent.“
Elongation of inch sections: ".17, ".15, ".13, ".14, ".17, ".18, ".19, ".17, ".19, ".41*.
Diameter at fracture, ".93; area, .679 square inch.
Contraction of area, 32.1 per cent.
Appearance of fracture, fibrous, seamy.