Table 1 Material properties of the niobium sheets: Vickers hardness (HV), tensile strength (Rm), yield strength (Rp), concentration of oxygen (cO), nitrogen (cN), hydrogen (cH) and carbon (cC).
From: Vacancy-Hydrogen Interaction in Niobium during Low-Temperature Baking
Tokyo Denkai | Ningxia | |
|---|---|---|
HV | 42.5–50.6 | 37–46 |
\({{\rm{R}}}_{{\rm{m}}}[{\rm{N}}/{{\rm{mm}}}^{2}]\) | 170 | 160 |
\({{\rm{R}}}_{{\rm{p}}}[{\rm{N}}/{{\rm{mm}}}^{2}]\) | 62 | 62 |
\({{\rm{c}}}_{{\rm{O}}}[{\rm{ppm}}\,{\rm{at}}]\) | 3.5–4.5 | 5 |
\({{\rm{c}}}_{{\rm{N}}}[{\rm{ppm}}\,{\rm{at}}]\) | 3.2–4.4 | 5 |
\({{\rm{c}}}_{{\rm{H}}}[{\rm{ppm}}\,{\rm{at}}]\) | 0.5–0.8 | 1 |
\({{\rm{c}}}_{{\rm{C}}}[{\rm{ppm}}\,{\rm{at}}]\) | 0.2–0.7 | 6 |
