Vacuum Level | Discontinuities Including Porosity (Imaging Nondestructive) | Thermal Conductivity (W/mK) | Inner Surfaces (X-Ray Refraction) | Porosity (SS) | Mode I (GIC) kJ/m2 | ||
Horizontal | Vertical | Static | Fatigue at N = 106 | ||||
Poor | 3.70% - 4.80% | 0.64 | 1.05% | 0.36% | 3.43% | 0.45 | 0.005 |
Moderate | 3.10% - 4.39% | 0.69 | 0.95% | 0.33% | 1.77% | 0.44 | 0.006 |
High | 1.30% - 2.10% | 0.75 | 0.87% | 0.23% | 1.49% | 0.52 | 0.010 |