The New Four-Four-Two

Author:  Dave Barkley | Director of Training | Electronics Inc.
Source:  The Shot Peener magazine, Vol 36, Issue 3, Summer 2022
Doc ID:  2022028
Year of Publication:  2022
Abstract:  
AS THE SPONSOR of the May 2022 publication of J442, I’ve asked The Shot Peener magazine to allow me to highlight its major changes. A goal of the SAE Surface Enhancement Committee (SEC) is to remove redundant and conflicting information among specifications thus making them easier to understand. This was the main reason for a new J442. The current two grades of strips used in the peening industry were defined in different specifications: J442 for standard grade strips and AMS2432 for high grade strips. AMS2432 notes all test strips must conform to J442 but adds tightened thickness, flatness (pre-bow) and hardness requirements.