| Graphite sort | Protective coating composition | Heat resistance | |
| Test temperature, K | Time to rupture, h | ||
| АРВ | SiC + (W, Co)Si2 | 1773 | 15.0 |
| МПГ | SiC + (W, Co)Si2 | 1773 | 21.0 |
| C/C | SiC + HfB2 + MoSi2 | 1773 | 32.0 |
| МПГ | SiC + HfB2 + MoSi2 | 1973 | 20.5 |
| АРВ | SiC + HfSi2 + MoSi2 | 2073 | 8.0 |
| АРВ | SiC + HfC + MoSi2 + (ZrO2 + SiO2) | 2073 | 6.0 |
| C/C | SiC + TiC + HfB2 + MoSi2 | 2073 | 7.0 |
| АРВ | ZrC + MoSi2 | 2073 | 3.0 |
| АРВ | TiC + MoSi2 | 2073 | 5.0 |
| МПГ | SiC + TiC + HfB2 + WSi2 | 2173 | 1.0 |