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TABLE 3
Summary of Mechanical Properties for A7-24 Type Steel
From Pt, Pleasant Bridge
Laboratory
Source of Sample
Yield Point ksi.
Yield Strength 0.2% Offset ksi.
Tensile Strength ksi.
Elongation, % 1"
Elongation, % 2"
Reduction Area %
National Bureau of Standards
3/4 inch gusset U7N (Longitudinal)
Av. 31.2
31.5
59.6
37
64
Min. 29.8
30.1
59.0
36
63
(Transverse)Av.
28.9
30.0
59.4
37
59
Min.
29.2
29.5
59.2
36
58
5/8 inch Web, Chain Bent Post (Transverse)Av.
36.5
37.3
68.0
32
55
Min.
35.5
36.2
67.4
30
54
U. S. Steel
1/2 inch Plate, Chain Bent Post Av.
35.5
63.2
33.0
33.5
66.5
Min.
34.7
63.0
33.0
32.0
65.9
Comparison Values University of Wisconsin, 1927¹.
Various Plates and Shapes, A7-24, 1/2 inch to 3/4 inch thick
Av. 35.8
64.2
28.0 (8 Inches)
Min. 27.6
52.2
13.2 (8 Inches)
1. From M. O. Withey, "Tests of Specimens Cut from Different Portions of Structural Steel Shapes," presented June 1928, annual meeting of the American Society for Testing Materials.