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Grey cast iron | |
A. | contains 1.7 to 3.5% carbon in fre< state and is obtained by the slov cooling of molten cast iron [Correct Answer] |
B. | is also known as chilled cast iron am is obtained by cooling rapidly. It i: almost unmachinable [Wrong Answer] |
C. | is produced by annealing process. I is soft, tough and easily machinec metal [Wrong Answer] |
D. | is produced by small additions o magnesium (or cerium) in the ladle Graphite is in nodular or spheroida form and is well dispersed throughou the material [Wrong Answer] |
E. | none of the above is true. [Wrong Answer] |