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Document No: DELTA SIGMA-USM
Version 4
Revision 3.94.2
MATERIAL
OF
BOLT
SONIC
STRESS
FACTOR
TEMPERATURE FACTOR
SOUND VELOCITY
MODULUS OF ELASTICITY
°F
°C
in / sec
mm / sec
psi x 10
6
MPa x 10
³
ISO SPECIFICATIONS R898
Gr.8.8
Gr.9.8
Gr.10.9
Gr.12.9
0.276
0.276
0.274
0.274
58
58
57
57
104
104
103
103
232000
232000
232000
232000
5892800
5892800
5892800
5892800
29.9
29.9
29.9
29.9
205
205
205
205
MATERIAL SPECIFICATIONS
4140 STEEL
4340 STEEL
STS STEEL
INCONEL
TITANIUM
0.274
0.285
0.250
0.296
0.490
56
55
80
62
64
101
99
144
111
115
232000
232000
230000
225000
245000
5892800
5892800
5840000
5710000
6220000
29.9
30
29
31
16.5
205
207
200
214
114
ASTM SPECIFICATIONS
A193 B7
A193 B16
A325
A490
A540
0.280
0.280
0.274
0.299
0.299
57
57
56
60
60
103
103
101
108
108
232000
232000
232000
232000
232000
5892800
5892800
5892800
5892800
5892800
30
30
29.9
29.9
30
207
207
205
205
207
AE SPECIFICATIONS 1038
Gr.2
Gr.5
Gr.6
Gr.8
Gr.9
0.275
0.275
0.277
0.274
0.275
57
57
60
57
58
103
103
108
103
104
232000
232000
232000
232000
232000
5892800
5892800
5892800
5892800
5892800
29.9
29.9
29.9
29.9
29.9
205
205
205
205
205
Appendix A
Note: These are approximate average values.