Approximate Radiographic Equivalence Factors
Based on Energy Level
| METAL |
100 kV
|
150 kV
|
200 kV
|
250 kV
|
400 kV
|
|
IR 192
|
CO 60
|
| Magnesium |
0.05
|
0.05
|
0.08
|
-
|
-
|
-
|
-
|
-
|
| Aluminum (pure) |
0.08
|
0.12
|
0.18
|
-
|
-
|
-
|
0.35
|
0.35
|
| Aluminum Alloy |
0.10
|
0.14
|
0.18
|
-
|
-
|
-
|
0.35
|
0.35
|
| Titanium |
-
|
0.40
|
0.35
|
-
|
0.71
|
0.9
|
0.9
|
0.9
|
| Iron/All Steels |
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
1.0
|
| Copper |
1.5
|
1.6
|
1.4
|
1.4
|
1.4
|
1.1
|
1.1
|
1.1
|
| Zinc |
-
|
1.4
|
1.3
|
-
|
1.3
|
-
|
1.1
|
1.0
|
| Brass* |
-
|
1.9
|
1.8
|
1.6
|
1.3
|
1.2
|
1.1
|
1.0
|
| Inconel Xb |
-
|
1.4
|
1.3
|
-
|
1.3
|
1.3
|
1.3
|
1.3
|
| Monel |
1.7
|
-
|
1.2
|
-
|
-
|
-
|
-
|
-
|
| Zirconium |
2.4
|
2.3
|
2.0
|
1.7
|
1.5
|
1.0
|
1.2
|
1.0
|
| Lead |
14.0
|
14.0
|
12.0
|
-
|
-
|
5.0
|
4.0
|
2.3
|
| Uranium |
-
|
-
|
20.0
|
16.0
|
12.0
|
4.0
|
12.6
|
3.4
|
Partial support for this work was provided by the NSF-ATE (Advanced Technological Education) program through grant #DUE 0101709.
Opinions expressed are those of the authors and not necessarily those of the National Science Foundation.