Home Forums General Discussion Shot Peening Process, Intensity, Coverage Saturation in case of multiple Almen strips .

The allowed variation in J443 is ± 0.0015"

A word of caution other peening specifications imposed other limits. Such as AMS2430 which require the ± 0.0015" variation to remain inside the limits of the engineering drawing.

AMS2430 example:

Drawing states the intensity range to be .006-.009A. During your process development you determine that the intensity of your process is .0085A. Now sometime later you run your verification arc height.
Based on AMS2430 it can be as low as .007A but the upper limit is .009A.