Low Carbon Steel Shot

Kotar is the result of our long term experience and detailed R&D studies. As we all know, one of the most important element of shotblasting process is hardness. Keeping that in mind, we primarily led our R&D studies on finding how we can increase our actual hardness level without comprimising our product quality. As a result, Kotar has been developed with higher hardness compared to standard low carbon steel shot while maintaining its strong side of not breaking during the whole shotblasting process. Its longer lifetime has been proved firstly in our test center and onsite through different shotblasting processes applied by our customers. Onsite experiences showed us that higher hardness levels greatly contribute to shorter shotblasting times. When produced, Kotar steel shot has 43 – 44 HRC initial hardness and this level reaches up to 49 – 50 HRC during the use due to manganese as well as contribution of other elements which is maintained until shot becomes unusable. Next priority considered during the R&D studies of Kotar was to have a working mix that does not change for a long time in order to have a more effective cleaning. Especially in foundries, parts with different sizes and shapes are usually shotblasted in the same machine using the same size steel shot. Kotar sizes are arranged based on new sieve distribution in accordance with SAE standards. Each Kotar size covers more area on the part by activating at least 30% more shot particles in unit time and volume. That guarantees both better cleaning of parts with different sizes and shapes as well as a working mix that keeps its distribution for a longer period.