iv) a) Nickel raises the eutectoid point in steels b) Top of the line brass is c

Question

iv) a) Nickel raises the eutectoid point in steels b) Top of the line brass is commonly called alpha brass. c) Minimum percentage of Cr by weight for passivation to occur is 12% d) Stainless steels are widely used because of their excellent machinability Answer: v) a) Cold rolling can be used for improving bendability of plates. b) Hot extrusion can be easily performed on high strength materials c) Upsetting involves causing multi-directional flow by a forging operation d) Continuous forming is not possible using a cold working process Answer: b

Explanation / Answer

iv) correct answer is c) Minimum percentage of Cr by weight for passivation to occur is 12% d) is not correct as stainless steels are widely used because of their excellent corrosion resistance and not because of their excellent machinability. v) b) Hot extrusion can be easily performed on high strength materials.

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