Ni Disc
| RM No. | 58A Ni-K500 |
| Base | Ni Disc |
| Al | 2.98 |
| As | 0.0015 |
| B | 0.00022 |
| C | 0.154 |
| Ca | 0.003 |
| Co | 0.0347 |
| Cr | 0.212 |
| Cu | 29.66 |
| Fe | 0.723 |
| Mg | 0.011 |
| Mn | 0.677 |
| Mo | 0.0243 |
| N | 0.00015 |
| Nb | 0.0073 |
| Ni | 65 |
| O | 0.0008 |
| P | 0.0086 |
| Pb | 0.00028 |
| S | 0.00099 |
| Sb | 0.00006 |
| Si | 0.07 |
| Ta | 0.00019 |
| Ti | 0.446 |
| V | 0.002 |
| W | 0.0021 |
| Zr | 0.03 |



