Latest threads in Metallurgy discussionsshow only best voted threads
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metal nomination
I wonder i anyone can help me, or direct me to somewhere I can find information. I recently saw the specification '7075-T6 Aluminium' used in another newgroup messsage. How are metals specified in...
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18 years ago
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Separating a Canadian $2 Coin with Liquid Nitrogen?
I have heard the Urban Legend that if you chill a Canadian 2-dollar coin in Liquid Nitrogen, the central brass-coloured part can be pushed out of the surrounding silver-coloured part. If this is true,...
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18 years ago
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Brass Strike Electroplate
Hello, I was wondering: 1. Can red brass (85% Cu/15% Zn) be reduced in HCl + H2O2 to produce CuCl2 and ZnCl2 simultaneously? 2. Then if HCl and water is added to bring the pH to say 4.0, could that...
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18 years ago
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Help req. re: thermal expansion, etc.
Hello, I have something I want to do but I need some tech info. Sorry if this is a dopey newbie question, but I've been unable to glean anything off Google that I can use. What I want to do is use a...
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18 years ago
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Gallium as a heat transfer medium.
I had the "brilliant" idea of using liquid gallium as a heat transfer medium between a molybdenum and alumina surface, at up to 1700 deg C. and between a stainless steel and alumina surface at up to...
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18 years ago
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Metal Springs in Liquid Nitrogen?
I need to build an apparatus in which a spring is used to press two parts together, then the entire apparatus is immersed in liquid nitrogen. I expect the spring to shrink when cooled, of course, but...
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18 years ago
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mar m 247 nickel based superalloy
Hi I'm looking for information on the effect of sour gas and liquid fuel on mar m 247 in a gas turbine engine. Any help is appreciated allan
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18 years ago
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Looking for supplier of Ti sponge in Asia or Europe. Thanks
I am looking for a supplier of Ti sponge from Europe, or Asia. If there are anybody could recommend me manufacturing company, plant? Thank you very much. Please, contact me off the listserver by...
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18 years ago
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news site
ORG for stop pollution emilia romagna italy http://www.castelcrescente.org
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18 years ago
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re-heat treating old knife blades
I've been having trouble re-heat treating used factory-made knife blades. The problem has been discussed here before but I've got a new-clue and wondering what anyone here might know about it. The...
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18 years ago
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Flat or precision ground?
When ordering metal stock online what is the difference of flat ground stock and precision ground stock? Does precision mean a smoother surface or something else?
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18 years ago
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Metallurgist in NY are ($/day/hr)?
I was wondering if anyone is, or knows of a metallurgist in the NY area that would be available for a few days for hire. We are a jewelry manufacturing company, and have recently come into a few...
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18 years ago
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Can these metals be blended?
That is, iron, brass, gold and silver, to make a huge bell. There's a Chinese story from the 15th century in which it cannot be done until.......The story is called "The Voice of the Bell." See here -...
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18 years ago
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Spectroscope for material analysis.
Hello, I am intrested in buying a spectroscope for elemental analysis of various ferrous material to detemine the percentage composition of various elements present in it. I am right now confussed...
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18 years ago
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pb etching brass
Hello, I have quite a problem with brass etching... Can you believe that ? I am working with Cu-Zn brass, two compositions : 41.1 and 44.1 at% Zn, so they're alpha/beta brass. After polishing, I try...
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18 years ago
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