The term ordered hardening heat treatment used in which of the following dental alloys ?
Correct answer: A. Gold-Copper
- A. Gold-Copper
- B. Nickel-Chromium
- C. Nickel-Titanium
- D. Silver-Palladium
Explanation
Ordered hardening, also called ordering or age hardening, is characteristic of gold-copper alloys because heat treatment forms an ordered strengthening phase. Nickel-chromium and nickel-titanium alloys are not the standard dental example of this treatment.
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