Table 6. Values of Linear Coefficient of Thermal Expansion (CTE, Estimated in the 50–400 °C Range), Glass Transition Temperature (Tg), and Softening Temperature (Ts) Estimated from Dilatometry Data (Figure 7).
| glass | CTE ± 0.1 (× 10–6 °C–1) | Tg ± 4 (°C) | Ts ± 3 (°C) | 
|---|---|---|---|
| Ba | 15.0 | 475 | 508 | 
| Nd | 13.8 | 494 | 531 | 
| Gd | 13.5 | 521 | 545 | 
| Yb | 12.8 | 498 | 537 |