Explain stress corrosion cracking?

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Explain any method through which molds can shine after casting?

0 Answers  

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what is the difference beteeen Annealing and stress releaving

6 Answers  

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

0 Answers  

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Is there any way through hardening and anodizing some type of aluminum, it could be as hard as steel? I have hardened steel rollers that run up and down on a ramp along with spring pressure. Alternatively, if you are familiar with snowmobiles, the rollers run on the helix on the secondary clutch.

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How does iron and steel exhibit allotropy?

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What is iron ferrite and what is it used for?

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The main metal used by the Indus Valley people was

4 Answers   RRB,

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What is mean by D2 Material used for Die tooling? What are the composition in that?

1 Answers  

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What is the specific heat value for liquid ?

0 Answers   NIC,

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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 composition of grey cast iron grade 20?

2 Answers  

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