- Mass fraction Mn - of 10-40% and above;
- Mass fraction Fe - 7 to 25% ;
- Mass fraction SiO2 - no more than 38%;
- Mass fraction phosphorus - no more than 0,02%;
- Mass fraction sulphur - no more than 0,1%;
- Mass fraction calcium oxide- no more than 1,2%;
- Mass fraction moisture - no more than 8%;
- fraction — 0-300 mm;
- fraction 0-6 mm — no more than 12%;
- Maximum deviations of a mass fraction of manganese — no more than 2%.
Mass fractions SiO2 of phosphorus, sulfur, calcium oxide and a mass fraction of a class are resulted for the information and are not rejection attributes.