- B28 -
APPENDIX B
U. S. STEEL LABORATORY DATA
Point Pleasant Bridge
U. S. Steel Results
February 10, 1969
Composition and Properties
of 1/2-Inch-Thick Plate From Chain Bent Post
L58 - U58 North
(Mechanical tests oriented with axis from top to bottom of post)
Composition
C
Mn
P
S
Si
Cu
Ni
Cr
Mo
N
0.20
0.58
0.011
0.032
0.10
0.019
0.01
0.015
0.007
0.006
Tensile Properties
Diameter, in.
Yield Strength, ksi 0.2% Offset
Tensile Strength, ksi
Elongation, % 1"
Elongation, % 2"
Reduction of Area, %
0.440
36.8
63.0
32.0
32.0
67.3
0.437
34.7
63.0
35.0
35.0
65.9
0.252
35.3
63.9
33.0
33.0
66.0
0.252
35.3
63.1
33.0
33.0
66.9
V-Notch Charpy Tests
Test Temperature, F
32
50
70
90
110
130
Pt-Lb
7,8
13,10,13
19,28,36
67,61
70,81
88,90
Percent shear
15,15
30,25,30
35,50,45
70,65
75,90
90,95
Lateral Expansion, mils
10,11
19,17,20
26,37,42
70,63
73,78
79,83
Rockwell B
72.5
71,74,75
73.5,70.5,76
72.5,74
75,71
74.5,73.5