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| Groups* | Metal/alloy | Contact with titanium |
|---|---|---|
| NB | Ni-Cr-Be | no |
| NB+Ti | yes | |
| NT | Ni-Cr | no |
| NT+Ti | yes | |
| N | Ni-high Cr | no |
| N+Ti | yes |
*NB: Nickel-Chromium with beryllium, NT: Nickel-Chromium without beryllium, N: Ni-high Chromium without beryllium, Ti: cp Titanium.
