The contraction of gold alloy on solidifying is approximately_____________?
Correct answer: B. 1.4%
- A. 0.4%
- B. 1.4%
- C. 2.4%
- D. 3.4%
Explanation
Gold casting alloys undergo about 1.4% linear contraction on solidification, although the exact value varies with alloy composition. This shrinkage is compensated by investment expansion and wax-pattern allowances.
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