| 요소 | 1 학년 | 2학년 | 3학년 | 4학년 | 5등급(Ti-6Al-4V) | 23등급(Ti-6Al-4V ELI) |
|---|---|---|---|---|---|---|
| 티타늄(티타늄) | > 99.5% | > 99.0% | > 98.0% | > 97.0% | > 99.0% | > 99.0% |
| 알루미늄(Al) | - | - | - | - | 5.5-6.75% | 5.5-6.5% |
| 바나듐(V) | - | - | - | - | 3.5-4.5% | 3.5-4.5% |
| 철(Fe) | < 0.2% | < 0.3% | < 0.3% | < 0.5% | < 0.25% | < 0.25% |
| 산소(O) | < 0.18% | < 0.25% | < 0.35% | < 0.40% | < 0.20% | < 0.13% |
| 카본(C) | < 0.08% | < 0.10% | < 0.10% | < 0.15% | < 0.10% | < 0.08% |
| 질소(N) | < 0.03% | < 0.03% | < 0.05% | < 0.05% | < 0.05% | < 0.05% |
| 수소(H) | < 0.015% | < 0.015% | < 0.015% | < 0.015% | < 0.015% | < 0.0125% |
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