The Combined Nomenclature (CN), v1:2021
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=49fd4a4b-3be3-4389-9b78-b2a56918d44c