How one can differentiate between 304 & 316 grades of steel (physically)?

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Define what are the properties and application of manganese steel?

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How can you find out define what kind of stainless steel was used in making a stainless object?

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How do you express pitch of gears?

0 Answers   Essar,

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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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what is the grain size of lead as an element and as an alloy such as lead tin alloy?

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What is the use of worm gears?

0 Answers   NIC,

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What happens when the mercury of a thermometer spills over the gold ring?

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what is the difference between digital signal and discrete signal?

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what is meant by hardening ability of metals?

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Which of different types of cast irons is stronger? Is their strength superior to steels?

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any input on how to spec out(if possible) a larger grain structure(3/8" or larger) on a Al 6061 forging material.

0 Answers   Novellus,

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