U. S. STEEL LABORATORY DATA
APPENDIX B
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Surface Tests (1)
Specimen 504) Specimen 722)
(Readings are Vickers hardness (DPH). Approximate Rockwell C conversion hardness values as determined from Wilson Conversion Chart are also shown).
Distance from Edge, in.
Run A
Run B
Run C
Run D
DPH
Rc
DPH
Rc
DPH
Rc
DPH
Rc
0.015
257
24.0
249
23.0
257
24.0
251
23.0
0.065
257
24.0
249
23.0
262
25.0
260
24.5
0.115
260
24.5
265
25.0
269
25.5
260
27.0
0.165
260
24.5
260
24.5
277
27.0
265
23.0
0.215
249
23.0
245
22.0
274
26.5
260
27.0
0.265
249
23.0
245
22.0
262
25.0
260
27.0
0.315
254
20.0
254
20.0
260
25.5
260
20.0
0.365
254
21.5
249
23.0
271
26.5
271
27.0
0.415
254
23.5
249
23.0
254
23.5
271
26.0
0.465
251
23.0
260
24.5
257
24.0
265
23.0
0.515
251
23.0
257
24.0
251
23.0
273
26.0
0.565
249
23.0
249
23.0
245
22.0
260
25.5
0.615
254
23.0
254
23.5
0.665
260
24.5
254
23.5
0.715
254
23.5
257
24.0
0.765
260
24.5
265
25.0
0.815
257
24.0
0.865
254
23.5
0.915
257
24.0
0.965
260
24.5
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Notes:
1) See Sketch C of Laboratory Specimen Plan.
2) See Sketch D of Laboratory Specimen Plan.
3) First reading was 0.01/0.02 inch from edge for various runs (average of 0.015 inch). Subsequent readings were spaced 0.05 inch apart.
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SPECIMEN 51
BOTTOM SURFACE VACUUM
GROUND BY NDE.
TOP SURFACE
OF DETECTOR
ELECTRODE
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
R16
R17
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
R37
R38
R39
R40
R41
R42
R43
R44
R45
R46
R47
R48
R49
R50
R51
R52
R53
R54
R55
R56
R57
R58
R59
R60
R61
R62
R63
R64
R65
R66
R67
R68
R69
R70
R71
R72
R73
R74
R75
R76
R77
R78
R79
R80
R81
R82
R83
R84
R85
R86
R87
R88
R89
R90
R91
R92
R93
R94
R95
R96
R97
R98
R99
R100
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