WROUGHT IRON.
432
No. 7432.
Best Puddled Iron.
Diameter, 1”.129.
Sectional area, 1 square inch. Gauged length, 10".
Remarks.
Elastic limit.
Micrometer reset at zero on 8" of the original gauged length.
Tensile strength. =16.1 per cent.
Applied loads per square inch.	In gauged length.	
	Elonga- tion.	Set.
Pounds.	Inches.	Inch.
1,000	0.	0.
5,000	.0014	0.
10,000	.0033	
20,000	.0070	
30,000	.0110	.0008
30,000	.1240	
32,000	.20	
34,000	.27	
36,000	.35	
38,000	.43	
40,000	.55	
42,000	.69	
44,000	.87	
45,000	1.01	.99
Rested without loac		. 8 days.
1,000	0.	0.
5,000	.0013	0.
10,000	.0032	
20,000	. 0068	
30,000	.0103	
40,000	.0138	
45,000	.0156	0.
50,000	.0175	0.
51,000	.0179	
52,000	/ . 0188 1 .0490	
53,000	.2520	.2290
53,000	1.29	
54,000	1.32	
55,000	1.54	
0	1.61	
Elongation of inch sections: ".15, ".14, ".14, ".15, ".15, ".15, ".15, ".16, ".16, ".26*.
Diameter at fracture, 1".01; area, .801 square inch.
Contraction of area, 19.9 per cent.
Appearance of fracture, fibrous, seamy.