| Elementum | Ni + Co | Cr | Nb | Ti | C | Mn | Si | Cu | Al | S | Ferrum |
| Compositio Chemica (%) | Minimum 70% | 14%-17% | 0.7%-1.2% | 2.25%-2.75% | 0.08% maximum | 1% maximum | 0.5% maximum | 0.30% maximum | 0.4%-1.0% | 0.01% maximum | 5%-9% |
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