Metallurgy is the science of the production and the processing of different metals and other metallurgic usable elements.
Questions tagged [metallurgy]
179 questions
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What material is used to hold molten iron in a furnace?
When iron is melted, I guess it has to be transported and contained. I think the container in which it is has to be able to withstand higher temperatures than what you want to melt.
According to this webiste, "Iron, Wrought" has a melting…
Martin Thoma
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How can I tell if I got counterfeit aluminum?
I recently received an order of extruded aluminum strip 3/32" thick that supposed to be 6061 hardened to specification ASTM B221. However, when we tried to bend it, it broke and the interior looked like cast zinc coated with aluminum. Is 6061…
Wallace Park
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Can titanium be used as I-beams?
Is titanium capable of being used in I-beams....
LazyReader
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Why does faster cooling produce smaller grains?
I've learned that in general steel and other metals tend to have smaller grains when cooled quickly and larger grains when cooled slowly and that at higher temperatures, the grain size grows even if there is no phase transformation. My question is…
asker
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How to rule-out if there's lead in a pipe's alloy?
I have a 2" diameter, 6" long pipe that I believe to be steel and want to use IF it is, heck I want to use it if it's OK to handle (ie not lead, arsenic etc..guess I can only rule-out so much!), it is very clearly a single-alloy pipe and has no…
metallurgicQ'sss
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What's the Difference Between LT and T Directions?
What is the difference between LT and T directions in MMPDS (formerly MIL-Handbook 5)?
I hand understood that forming metal orients its grains, destroying the isotropic nature of 'pure metal' and that the "Long" direction is the length of the…
PipperChip
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What's the benefit of copper plating paper clips?
(Sorry, not an engineer or student, just looking for the most metallurgically relevant stack.)
Recently I was in someone's office and, while playing with their paper clips, it occurred to me that copper is kind of a precious material for humble…
KlaymenDK
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Carbon Phase Diagram vs. TTT diagram
A "Carbon Phase Diagram" has an upper and a lower transformation temperatures. It was my understanding that once a steel had cooled below the lower transformation temp (1333 deg F) that the austenite had changed completely to another structure (ie…
Confused
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Word for the tendency of one metal to rub off on another?
Is there a word for the tendency of some metals to make crayon-like marks on other metals? For example, a lead bullet makes faint marks on some steels, but not on others with a similar surface finish.
Kevin Krumwiede
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Where can I find how good given aluminum is for machining?
What kind of resource provides summary data on how given kind of aluminum yields to machining? Are there norms, or such?
Explaining:
Different kinds of metals yield to machining differently; e.g. MO-59 brass has a small addition of lead, which makes…
SF.
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If I have welding procedure (QW-403) for carbon steel material S275JR, can I use it to weld carbon steel material for Q355B? Need for separate WPS?
I have a project where the material of carbon steel plates to be used is S275JR and S355JR. Our Chinese supplier could not manage to get S275JR or S355JR but rather prefers to use Q355B which is equivalent grade. My client is insisting on me doing…
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Does electropolishing has any effect on the conductivity of stainless steel?
During the manufacturing of a spring from SS AISI 303 wire, we noticed that after electropolishing, the sample does not remain as conductive as it was before. My hypothesis is that since electropolishing reveals a chromium enriched surface, which…
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Which one will give better quality to do power compaction between slow press and quick hit?
I would like to do compaction to make small gears. I have seen a lot of videos on Youtube how to do it, mostly by slowly press the metal powder into the mold. But I just have a simple tool, I don't have a proper one. Instead of slowly press the…
AirCraft Lover
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Fluid energy mills with powdered reactive metals
Can fluid energy mills manufacture spherical powdered metal of size ~5 micrometers in cases where the metal is quite reactive, like with lithium and aluminum, if the fluid used is a non reactive gas like argon or helium?
Hami Hashmi
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