Hardness Tests (C3)
Segment 914, Specimens 2, 4, 6, 8
Specimen 2)
Hardness Near Ground Surface, Rc
Hardness at Center Rc
Hardness Near Other Surface, Rc
2
22.5, 22.5, 22.5
18.5, 19.5, 20.0
23.5, 24.0, 24.0
4
22.0, 22.5, 23.0
20.5, 20.5, 20.0
23.5, 23.5, 24.5
6
23.5, 25.5, 24.5
20.5, 21.5, 21.5
24.5, 23.0, 23.5
8
23.5, 24.5, 23.5
23.0, 24.0, 24.0
23.5, 24.0, 23.0
Hardness Survey, Specimen 4
Location
Hardness
Distance From Surface, in.
0.025
0.050
0.075
0.100
0.125
0.150
0.175
0.200
0.225
Run A
DPH
251
254
254
251
251
260
251
265
262
Rc 3)
23
23
23
23
23
25.5
23
25
25
Run B
DPH
249
251
257
251
265
260
260
277
262
Rc 3)
23
23
24
23
25
24.5
24.5
27
25
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NOTES:
1) See Sketch A of Laboratory Specimen Plan
2) See Sketch B of Laboratory Specimen Plan
3) Converted from DPH using Wilson Conversion Chart
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- B31 -
APPENDIX B
U. S. STEEL LABORATORY DATA
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*Point: Ellicott City, U. S. Steel Works, May 21, 1965*
*Specimen 4*
*Sketch A*
*Sketch B*