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    Metallurgy online resources

    What are you looking for in particular? I can't really help you unless you're more specific. This is a good website to get an overview of different steel grades (austenites, duplex, PH steels etc) https://www.edelstahl-haerten.de/en/materials/ Not sure if that's helpful though. If you're a...
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    When is it necessary to harden steel?

    Those information are quite hard to find, I'm afraid. I have found some info on 202 and the 300 grades here. It's in relation to corrosion but I am not sure how reliable these numbers are. What are the hardening processes you're going to test by the way? There are a lot and they all promise...
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    Combined cycle

    Combined cycle with steam using gas turbine exhaust can reach over 60% efficiency but take 30 minutes or more so start up. These are about 1200$ per KW. Several articles talk about more than 250 minutes to a cold start of a combine cycle plant to 100%. 
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