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Two steel grades with different oxide layers have been pre-descaled with spherical steel shot and edged chilled iron grit, followed by a pickling procedure in hydrochloric acid. The removal of the oxide layer is quadratic dependent on the process parameters for low carbon steel and linear dependent for electrical steel. Pre-descaling of low carbon steel with hydroabrasive jets is more efficient compared to electrical steel. The dissolution of the oxides on low carbon steel in hydrochloric acid is twice as fast compared to electrical steel. Due to the composition of the oxide layer, the influence of water pressure and amount of blasting material on surface quality differs between both materials. It is shown that a reduction of acid and energy consumption without considerably harming the steel substrate is feasible with spherical steel shot. Energy savings up to 15% (kWh/t) for descaling electrical steel and up to 29% (kWh/t) for low carbon steel might be realised. Using chilled iron grit as blasting material does not lead to an energy saving. Especially for steel grades with very adherent scale layers, hydroabrasive pre-descaling is a promising alternative compared to pure pickling procedures. Based on the presented laboratory scale experiments, the parameters need to be verified by a semi-industrial or industrial testing plant.