Blasting Media Buyer Guide · Updated October 10, 2026
Steel Shot Size Chart and SAE Grade Selection
Steel shot size affects impact energy, coverage and the surface result. Select the grade together with hardness, equipment type and the required cleaning or peening outcome.
General selection logic
| Buyer objective | Selection direction | Confirm before ordering |
|---|---|---|
| Heavy scale or robust castings | Larger shot is normally considered for higher impact | Equipment capacity and acceptable profile |
| General cleaning | Balance impact and coverage | Current media, cycle time and dust level |
| Smaller or delicate parts | Finer shot may improve coverage | Part geometry and required finish |
Do not specify size alone
Send the material being cleaned, contaminant, wheel or air-blast equipment, target cleanliness, surface profile and current media consumption. The supplier can then review grade, hardness and packaging together.
Quotation checklist
- Requested SAE designation or particle range
- Application: descaling, cleaning or shot peening
- Workpiece material and dimensions
- Hardness and durability requirement
- Monthly quantity, bag size and destination
Frequently asked questions
Should steel shot size be selected by SAE grade alone?
No. Review the workpiece, contaminant, blasting equipment, target finish, hardness requirement and operating mix together with the requested size.
Is larger steel shot always faster for cleaning?
Not necessarily. Larger shot generally increases impact, while finer shot can improve coverage. The suitable balance should be confirmed with the part, machine and required surface result.
What information should a steel shot RFQ include?
Include the application, workpiece material and dimensions, current media, equipment type, required finish, requested grade or particle range, quantity, packaging and destination.