This specification, in conjunction with the general requirements for peening media covered in AMS2431, establishes the requirements for the procurement of conditioned cast steel shot with a hardness of 45 to 52 HRC.
SAE AMS2431/1F-2017 history
2017SAE AMS2431/1F-2017 Peening Media (ASR) Cast Steel Shot, Regular Hardness (45 to 52 HRC)