Question 50 · LDEK · Prosthodontic materials

The melting temperature range of investment materials for chromium-cobalt alloys is:

  1. A. 150-200ºC.
  2. B. 700-1200ºC.
  3. C. 1400-1800ºC.
  4. D. 2000-2400ºC.
  5. E. over 3000ºC.
Hint

Compare the casting temperature of cobalt-chromium alloys with the thermal stability required of the mould material surrounding them.

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