品级 grade | ni9999 | ni9996 | ni9990 | ni9950 | ni9920 | ni+co (%min) | 99.99 | 99.96 | 99.9 | 99.5 | 99.2 | co (%max) | 0.005 | 0.02 | 0.08 | 0.15 | 0.50 | 杂 质 含 量 不 大 于 impurities (%max) | c | 0.005 | 0.01 | 0.01 | 0.02 | 0.10 | si | 0.001 | 0.002 | 0.002 | --- | --- | p | 0.001 | 0.001 | 0.001 | 0.003 | 0.02 | s | 0.001 | 0.001 | 0.001 | 0.003 | 0.02 | fe | 0.002 | 0.01 | 0.02 | 0.20 | 0.50 | cu | 0.0015 | 0.01 | 0.02 | 0.04 | 0.15 | zn | 0.001 | 0.0015 | 0.002 | 0.005 | --- | as | 0.0008 | 0.0008 | 0.001 | 0.002 | --- | cd | 0.0003 | 0.0003 | 0.0008 | 0.002 | ----- | sn | 0.0003 | 0.0003 | 0.0008 | 0.0025 | ---- | sb | 0.0003 | 0.0003 | 0.0008 | 0.0025 | ----- | pb | 0.0003 | 0.001 | 0.001 | 0.002 | 0.005 | bi | 0.0003 | 0.0003 | 0.0008 | 0.0025 | ---- | al | 0.001 | ---- | ----- | ---- | ----- | mn | 0.001 | ------ | ----- | ------ | ----- | mg | 0.001 | 0.001 | 0.002 | ----- | ------ |
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