A plain carbon steel contains 45 wt% of proeutectoid ferrite. What is its average carbon content in weight percent? I know that you need to use a tie line in the phasediagram, but my book does not really give a good example to go by?

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What is the hottest part of flame in fire?

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What is iron ferrite and where is it found?

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What is the melting point of e70 steel, 304,308,316 stainless steels? In addition, what is the hottest part of the flame in a fire?

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Define what is or define what characterize the thermodynamic state of metal (structure of metal)?

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What is the use of worm gears?

0 Answers   NIC,

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Explain super alloys?

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What are allotropes? What are the allotropes of iron and carbon?

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Why do some of the latest 'single crystal' superalloys contain concentrations of the grain boundary strengthening elements, e.g. carbon and boron?

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Define grinding.

0 Answers   Essar,

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What affect would increasing the charpy impact toughness on an object have on the surface of an object it strikes if all else remains the same? Would it cause moredamage to the object it strikes?

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I currently use 17-7 PH stainless which is hardened to condition CH after forming. raw matl is .1.75"X .12" X .008". Its main usage after hardening is silicon wafer retainer where it's contantly cycled up and down to putin and remove wafer after 40-60 sec process at 400C temp. At this high temperature this part seemed to deform after a a couple of hundred wafer which is what it was designed for in the first place. THere is a proposal to go to a different material to increase lifeline of this part. My question is..... can 321 SST be a plugin replacement. I know this has a higher temp rating but how about its forming characteristics, will it have spring properties, and wont become brittle after prolonged exposure to 400C.

0 Answers   Novellus,

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