WROUGHT IKON,
434
No. 7418.
Burden’s Best Iron.
Diameter, 1".129.
Sectional area, 1 square inch.
Gauged length, 10".
Applied loads per square inch;	In guaged length.		Remarks.
	Elonga- tion.	Set.	
Pounds.	Indies.	Inch.	
1,000	0.	0.	
5,000	.0012	0.	
10,000	.0030		
20,000	.0069		
29,000	.0103		Elastic limit.
29,200	.1950		,
30,000	.2140	.2030	
Micrometer reset at zero on the original gauged length.
Rested without load 1 day.
0.
Tensile strength. =27 per cent.
0. .0007 .0016 .0064 .0102 .0106 .0110 .0112 .0137 .0145 .0163 .1046
.34 .39 .47 .58 .71 .90 1.37 2.15 2.70
1,000 5,000 10,000 20,000
30.000
31.000
32.000
32.500
33.000
33.500
34.000
34.500
35.000
36.000
38.000
40.000
42.000
44.000
46.000 47,700
0
Elongation of inch sections: ".20, ".22, ".25, ".23, ".30, ".57*, ".30,
.19.״ ,22." ,22."
Diameter at fracture, ".85; area, .567 square inch.
Contraction of area, 43.3 per cent.
Appearance of fracture, fibrous.