Sample | ะก, mass % | Fe, mass % | Cr, mass % | Cu, mass % |
No. 7 | 2.09 | 74.38 | 8.94 | - |
No. 1 | 16.76 | 5.89 | 1.67 | 74.38 |
No. 3 | - | 5.74 | 1.70 | 92.56 |