According to official announcement of China government organization, the new steel export duty is put into effect from Aug 1st, 2021. The detailed steel material products are listed as below:

S.N. HS CODE Commodity Tentative Duty
(%)
Export Duty since Aug, 1st, 2021
(%) 
1 72011000 High-pure raw iron
(Mn<0.08%, P<0.03%,
S< 0.02%,Ti<0.03%)
15 20
2 72024100 chromium iron, C>4% 20 40
3 72024900 chromium iron, C≤4% 20 40