Steel Shot is used for descaling steel components, typically using a centrifugal wheel airless blasting machine and in the foundry industry to remove sand from components.
The hardness of 90% of all shot paticles shall be within the range of 40-50 HRc. (Rockwell C)
The steel shot shall be as nearly spherical as commercially possible and no more 20% of the shot particles shall have objectionable defects.
The microstructure of steel shot shall be uniform martensite, tempered to a degree consistent with the hardness range,with fine,well distributed carbides, if any.
The density of steel shot shall be not less than 7.4 g/cc.
|S660||Blast Cleaning large steel and iron castings|
|S550||Blast Cleaning large to medium steel and iron castings|
|S460||Blast Cleaning large to medium steel and iron castings|
|S390||Blast Cleaning medium to small steel and iron castings|
|S330||Blast Cleaning medium to small steel and iron castings|
|S290||Blast Cleaning precision castings. Peening medium thin sheets|