Abstract | Steel shot blasting process is the most widely used for cleaning, stripping and improving a metal surface. The grade or size of steel shot will determine the ultimate finish achieved on the surface of the metal. The round ball shape of the steel shot produces a clean, smooth and polished surface through a peening action created by the acceleration of the shot. In a peening application, steel shot is also used to impart compressive strength to torque or load bearing metal parts. |
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Steel Shot
Steel shot blasting is the most widely used process for cleaning, stripping and improving a metal surface. The grade or size of steel shot will determine the ultimate finish achieved on the surface of the metal. The round ball shape of the steel shot produces a clean, smooth and polished surface through a peening action created by the acceleration of the shot. In a peening application, steel shot is also used to impart compressive strength to torque or load bearing metal parts.
Smaller steel shot will result in a smoother and more polished surface. Larger shot will clean more aggressively but produce a rougher surface. Both air powered and wheel blast systems can be used to accelerate the steel shot onto the surface of the part. Due to the hardness and density of steel shot, it can be recycled more than dozens of times before replacement. During use of steel shot a minimal amount of dust is created in the blasting process.
ISO 11124-3 | SAE J 444 | Nominal Size
(mm) |
Distribution | Sieve Mesh | Screen aperture
(mm) |
Operational Mix
S100 S120 |
Operational Mix
S 330 S390 |
0.85-1.40 | All Pass No. | 12 | 1.70 |
85% Min on No. | 20 | 0.85 | |||
96% Min on No. | 25 | 0.71 |
Screening Specifications, High Carbon Cast Steel Shot ZFA S303
Chemical Comp. | W. Percentage | Hardness No. | Micro Structure | Total Defect | Ap. Density |
Carbon | 0.85-1.20 | 390-530 HV(L)
470-610 HV(P) |
Uniform Martensite And/or Bainite Microstructure, Tempered To A Degree Consistent With The Hardness Range | 20 PCT Max
Consist of Non Shape, Void, Shrinkage & Crack |
7.0 Kg/Dm3 Min |
Manganese | 0.60-1.20 | ||||
Selenium | 0.40 Min | ||||
Sulfur | 0.05 Max | ||||
Phosphor | 0.05 Max |
Technical Specifications, High Carbon Cast Steel Shot ZFA S303
General Applications, High Carbon Cast Steel Shot ZFA S303
Benefits:
Applications:
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