WROUGHT IRON.
422
No. 7413.
Common Refined Iron. Diameter, 1".129.
Sectional area, 1 square inch. Gauged length, 10".
Remarks.
Elastic limit.
^Micrometer reset at zero on the original gauged length.
Tensile strength. =19.6 per cent.
Applied loads per square inch.
Inch.
Inches.
Pounds.
. .0012 .0031 . 0069 . 0104 . 0126	©O
	0. 0.
	
.1400 .2210 .30 .38 .47 .68	
	
	
	
	
	.66
without load 1 day.
1,000 5,000 10,000 20,000
30.000
35.000 35,400 35,500
36.000
38.000
40.000
42.000
45.000 Rested
0.
.0
־.0
ó:
0.
.0016 .0038 .0079 .0120 .0164 .0174 .0182 .0186 .0190 .0194 .0199 . 0204 .0210 .0220
1,000 5,000 10,000 20,000
30.000
40.000
43.000
45.000
46.000
47.000
48.000
49.000 49,500
.79
1.08
1.66
1.96
51.000
52.000
53.000 0
Elongation of inch sections: ".14, ".14, ".16, ".16, ".18, "31, ".42*, ".23, ".17, ".15.
Diameter at fracture, ".92; area, .665 square inch.
Contraction of area, 33.5 per cent.
Appearance of fracture, fibrous.