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Page Title:
Table III. Acceptable limits of linear porosity |
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|  MIL-R-45774A (MI)
TABLE III.
Acceptable limits of linear porosity.
Standard
Sheet Thickness (inches)
Average Diameter of Images (in inches) of
Average Distance (in inches) of Closest
Individual Cavities *
Approach in 3 Linear inches of Weld
I
All
None Acceptable
None Acceptable
II
<
0.126
0.0625 Minimum - 0.094 Maximum
0.75
0.126
-
0.250
0.0312 Minimum - 0.0469 Maximum
0.75
>
0.250
0.0469 Minimum - 0.0625 Maximum
0.75
III
<
0.126
0.50
0.126
-
0.250
Same as Standard II
0.50
>
0.250
0.50
IV
<
0.126
0.0625 Maximum
0.50
0.126
-
0.250
0.0625 Minimum - 0.094
Maximum
0.50
>
0.250
0.0625 Minimum - 0.125
Maximum
0.50
V
<
0.126
0.0625 Maximum
0.25
0.125
-
0.250
0.0625 Minimum - 0.094
Maximum
0.25
>
0.250
0.0625 Minimum - 0.125
Maximum
0.25
* Individual cavities shall not exceed 0.50T
8
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