427
WBOUGHT IBON.
No. 7415.
Best Puddled Iron.
Diameter, 1129.״.
Sectional area, 1 square inch.
Gauged length, 10".
Elastic limit.
Micrometer reset at zero on the original gauged length.
Tensile strength. 18.9־ per cent.
In gauged length.	
Elonga- tion.	Set.
Inches.	Inch.
0.	0.
.0012	0.
.0031	
.0067	0.
.0103	.0001
.1250	
.1690	
.23	
.25	
.29	.28
without load 1 dav.	
0.	0.
.0011	
.0028	
.0070	
.0108	
. 0127	-.0002
.0132	
.0136	
f .0140	
i .0145	
.0156	
.0167	
.0195	
.1480	. Í3Í2
.47	
.52	
.63	
.79	
1.04	
1.65	
1.89	
Applied loads per square inch.
Pounds.
1,000
5.000 10,000 20,000
30.000 30,800
31.000
32.000
33.000
34.000
35.000 Rested
1.000
5,000
10.000 20,000
30.000
35.000
36.000
37.000
37.500
38.000
38.500
39.000
40.000
41.000
42.000
44.000 . 46,000
48.000 49,600
0
Elongation of inch sections: ".13, ".15, ".16, ".16, ".23, ".46*, ".16, ".14, ".15, ".15.
Diameter at fracture, ".90; area, .636 square inch.
Contraction of area, 36.4 per cent.
Appearance of fracture, fibrous.