Low carbon steel shot is produced using low-carbon scrap, which is well selected and has little sulfur and phosphorus content. In the production process, scrap is melted in induction furnaces at 1600 -1650 °C, cooled in water after atomization and have a bainitic microstructure. Low carbon steel shot particles are obtained in the form of cracks-free grains. In addition, no heat treatment is applied.

On the other hand, high carbon steel shot have hard, brittle martensitic microstructure since they are made of all kinds of scrap and heat treatment applied after casting causes surface cracks.

Because of all these features, Tosçelik Granül product has 20 percent longer life than high carbon steel shot which various test equipments prove.

Tosçelik Granül low carbon steel shot, with its long service life and high hardness, shows excellent performance in rust, oxide and sand removal processes, deburring, surface preparation and shot peening operations. Product is appropriate for use in foundries, steel mills, forging and rolling mills, machinery manufacturing, the steel industry, automotive, ship, aircraft and structural steel. 

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Why Low Carbon?

Low carbon and high manganese steel shot have high impact absorption capacity; impacts are distributed uniformly throughout the shot.

During shot blasting operations, low carbon steel shot is peeled down into thin layers similar to the layers of onions for up to 80 percent of their life due to wear, and are only broken into small pieces due to fatigue of the material. Machine and blade erosion are also significantly reduced as they are divided into lesser and smaller parts.

High carbon steel shot particles however are broken into large and angular pieces in a short time due to the crack structure formed during production. With this feature, the machine causes high extra costs on turbine equipment and filters.

Surface cracks are not seen in low carbon shot as in high carbon shot. Cracks reduce the life of the shot.

Due to the high manganese content, the low carbon steel shot hardens up to 46-49 HRC in the blasting machine in a very short time. Therefore, it has a better cleaning effect than high carbon material.


We prepare our Kotar products considering all kinds of surface cleaning needs of our customers and responding to different requirements. We can also offer special Kotar working mixes for our customers' special processes.

KOTAR 38: S-70 0.12 – 0.50 mm

KOTAR 39: S-110 0.18 – 0.71 mm

KOTAR 40: S-170 0.18 – 1.00 mm

KOTAR 41: S-230 0.30 – 1.18 mm

KOTAR 42: S-280 0.50 – 1.18 mm

KOTAR 43: S-330 0.71 – 1.40 mm

KOTAR 44: S-390 0.71 – 1.70 mm

KOTAR 45: S-460 0.85 – 2.00 mm

KOTAR 46: S-550 1.00 – 2.36mm

KOTAR 47: S-660 1.18 – 2.80mm

KOTAR 48: S-780 1.40 – 3.35mm


Carbon: 0.10% – 0.15%

Manganese: 1.20% – 1.50%

Silica: 0.10% – 0.25%

Sulphur: max. 0.035%

Phosphor: max. 0.035% 


Initial hardness: 43 – 44 HRC

Operation hardness: 45 – 52 HRC