item | index |
含量(Mn) w/% ≥ | 44 |
氯化物（以Cl-计）w/% ≤ | 0.01 |
硫酸盐（以SO42-计）w/% ≤ | 0.04 |
铝（Al）w/% ≤ | 0.005 |
钾（K）w/% ≤ | 0.0050 |
钠（Na）w/% ≤ | 0.0050 |
钙（Ca）w/% ≤ | 0.0030 |
镁（Mg）w/% ≤ | 0.0050 |
铅（Pb）w/% ≤ | 0.0050 |
铜（Cu）w/% ≤ | 0.005 |
铁（Fe）w/% ≤ | 0.0020 |
锌（Zn）w/% ≤ | 0.0050 |
钴（Co）w/% ≤ | 0.005 |
镍（Ni）w/% ≤ | 0.005 |
镉（Cd）w/% ≤ | 0.005 |
铬（Cr）w/% ≤ | 0.0040 |
盐酸不溶物w/% ≤ | 0.03 |
氮（N）w/% ≤ | 0.01 |