The Combined Nomenclature (CN), v1:2020
manganese, 0,6% to 2,3% of silicon, or of steel containing by weight >= 0,0008% of boron with any other element < the minimum content referred to in Note 1 f
https://www.dst.dk/en/Statistik/dokumentation/nomenklaturer/kn?id=82f0fee5-2769-43bc-83fc-79117ee135ae