Historical
SAE AMS 2431/2E-2010 (SAE AMS2431/2E-2010)
Peening Media (ASH) Cast Steel Shot, High Hardness (55 to 62 HRC)
The complete requirements for procuring the product shall consist of this document and the latest issue of the basic specification, AMS 2431. Cast steel shot, high hardness, have been used typically in peening metal surfaces to impart compressive stresses to these surfaces thereby increasing resistance to fatigue and stress-corrosion cracking, but usage is not limited to such applications. Generally, high hardness cast steel shot is used on parts of hardness 50 HRC or over.
Society of Automotive Engineers [sae]