Cast shot WS special hardness is a steel shot shot designed for surface hardening in the aviation industry, railway and automotive industry.
| Product name | Chem. compound | Medium hardness | Grading | Minimum true gravity measured by alcohol displacement method | Variation in diameter, mm | Microstructure |
| Cast steel shot WS | Carbon 0.8-1.2%, Silicon 0.4-1.2%, Manganese 0.6-1.2%, Phosphorus ≤ 0.05%, Sulfur ≤ 0.05% | Special HRC 550-630 HV (52.3-56.8 HRC), 630-720 HV (56.8-61 HRC) | According to TU 4196-001-78730722-2010 | ≥ 7.4 | 0.18-2.36 | completely homogeneous and fine-grained martensite |
The size of the granules affects the quality and speed of processing. The more particles contained in a kilogram of product, the higher the surface cleaning rate: per unit time, a greater number of shot granules come into contact with the cleaned surface, but the shot must be of sufficient size to fulfill the set technological task.
| Shot brand | Nominal size, mm | Number of particles in 1kg |
| WS 930 | 2,36 | 21.000 |
| WS 780 | 2,00 | 25.000 |
| WS 660 | 1,70 | 42.000 |
| WS 550 | 1,40 | 70.000 |
| WS 460 | 1,18 | 120.000 |
| WS 390 | 1,00 | 205.000 |
| WS 330 | 0,85 | 335.000 |
| WS 280 | 0,71 | 550.000 |
| WS 230 | 0,60 | 925.000 |
| WS 170 | 0,50 | 2.640.000 |
| WS 110 | 0,30 | 7.480.000 |
| WS 070 | 0,18 | 26.400.000 |
