Hamad Metallurgy 04/04/2020 A. 19% B. 2% C. 1.7% D. 4% Related Mcqs: Cobalt-Chrominum alloys contains_______________?A. 30% cobalt and 60% chrominum B. 60% cobalt and 30% chrominum C. 1% palladium D. 20% gold... Disadvantage of having a short sprue is________________?A. Rapid solidification of metal B. No place for reservoirs C. Incomplete evacuation of gases D. Difficulty in removing casting from investment... Annealing is also known as_______________?A. Soft hardening treatment B. Hard hardening treatment C. Precipitating heat treatment D. Stress relieving heat treatment... Which of the following decrease with strain hardening______________?A. Surface hardness B. Strength C. Proportion limit D. Corrosion resistance... Stainless steel orthodontic wire can be hardened by________________?A. Tempering B. Work hardening C. Age hardening D. Precipitation hardening...
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