Martensite is characterized as a very: O a) hard needle like structure produced by a fast cooling rate. Ob) hard needle like structure produced by a slow cooling rate, Oc) soft needle like structure produced by a fast cooling rate. Od) soft needle like structure produced by a slow cooling rate. Steel castings are most commonly made from: Oa) Fully killed steels. Ob) Semi killed steels. Oc) Rimming steels. Od) Highly alloyed steels.
Martensite is characterized as a very: O a) hard needle like structure produced by a fast cooling rate. Ob) hard needle like structure produced by a slow cooling rate, Oc) soft needle like structure produced by a fast cooling rate. Od) soft needle like structure produced by a slow cooling rate. Steel castings are most commonly made from: Oa) Fully killed steels. Ob) Semi killed steels. Oc) Rimming steels. Od) Highly alloyed steels.
Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
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pls help asap on both

Transcribed Image Text:Martensite is characterized as a very:
O a) hard needle like structure produced by a fast cooling rate.
Ob) hard needle like structure produced by a slow cooling rate,
Oc) soft needle like structure produced by a fast cooling rate.
Od) soft needle like structure produced by a slow cooling rate.

Transcribed Image Text:Steel castings are most commonly made from:
Oa) Fully killed steels.
Ob) Semi killed steels.
Oc) Rimming steels.
Od) Highly alloyed steels.
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