Best Rated threads in Metallurgy discussionsshow all threads
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Interested in Metallurgy
So I am currently a lab technician at a materials testing facility and the company is looking to hire a metallurgist in the far future and was kind of interested in the position, though i am not a...
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8 years ago
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H11 Steel
H-11 steels are the most commonly used Hot Die Tool Steels. These Hot Die S teels made up of the composition of various grades like Carbon, Manganese, Silicon, Chromium. Chromium is the major chemical...
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8 years ago
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Why Vacuum Levitation Melting furnace is perfect to advanced metals and alloys?
Vacuum Levitation Melting furnace adopts advanced melting, refining and alloying technology, the molten metal bath is levitated in water cooled copper crucible during melting under vacuum or inert...
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9 years ago
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Boron steel
I was given almost 100 feet of Bandsaw blade a guy here on s.e.m. tested it for me and it turns out to be a Boron steel... 0.07%C 0.68%Mn 0.002%B! 0.27%Si 1.15%Cr 1.05%Mo 0.67%Ni 0.17%V 0.04%W (it was...
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11 years ago
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Equivalent spec for S132 Steel
I'm looking for the american equivalent spec (AMS perhaps??) for S132 Nitrided steel. Anybody know what it is? If not anyone know where I can find the material properties for this steel? Thanks in...
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17 years ago
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Nitralloy 135M
If someone would be so kind as to offer a layman's definition of Nitralloy 135M I would appreciate it. I've googled as best I could and cannot find anything useful. I am primarily interested in its...
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17 years ago
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Normalizing fo SCM415H steel
Normalizing is the simplest yet a very typical heat treatment process. We are making gears+shafts for two wheelrs. I faced problem with Normalizing of Gears & Shafts of Steel grade (JIS) SCM415 or...
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18 years ago
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unitron series n metallurgical microscope
HELLO, YOU METALLURGISTS OUT THERE. DOES ANYONE HAVE ANY IDEA WHERE I COULD FIND A COPY OF THE OPERATING MANUAL FOR A UNITRON SERIES "N" METALLURGICAL MICROSCOPE? THANKS, FRANCIS J. PRONESTI.
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19 years ago
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Rockwell Hardness as a predictor of toughness/brittleness?
Okay, this is yet another SAE Grade 5 vs Grade 8 fastener question - are Grade 8s more brittle than Grade 5 and does it matter for practical purposes. My main question in this post is "I thought that...
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19 years ago
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Re: detection gold on human body
Dangerous and unreliable: false accusations will flourish, because of spurious contaminations (by Au, but also by Cu, Ag, Sb, Pt, Pb, Bi, Hg,..., depending on the spectral instruments used). A...
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20 years ago
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Why are metals opaque and ceramics transparent?
can anyone tell me why are metals opaque and ceramics transparent?
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18 years ago
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Mazak vs. Zamak
I've just been reading up on the history of zinc smelting in the UK. One little snippet I was surprised to find was that the commonplace zinc-diecasting alloy "Mazak" is a UK name. The original...
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19 years ago
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How corrosion resistant is CPM M4 tool steel?
The subject is my question, I want to make a survival axe head of M4 or CPM M4 tool steel. I have heard great things about it's hardness, wear resistance and toughness but very little about ability to...
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18 years ago
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fcc and bcc - important differences?
Hi NG. I'm preparing myself for the coming examination and I think I've heard that bcc-materials (steels) have a fatigue stress limit whilst fcc-materials (aluminium) doesn't. But I can't find any...
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18 years ago
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Hardness of Titanium on the HRc ? ? ? ?
So I know Titanium is light and strong and all that, super, but except for titanium carbie I've not heard anything about hardness or wear resistance principles. I was thinking of getting a titanium...
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18 years ago
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What is 10B38 Steel? I need help locating this material for a large project
I am looking for two things: - chemical makup/properties of 10B38 material - known suppliers in the USA Thanks for any help you can provide me with. RL
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11 years ago
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Copper tungsten cleaning
Hi, I am involved in plasma arc welding of PTFE coated stainless steel guidewires, .035" diameter. My problem is in cleaning the fixturing(copper tungsten), a dark material builds up on the clamp I...
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17 years ago
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Titanium and archaeology
I was recently discussing local bronze and iron age sites with a local archaeologist, in particular their survival in different conditions (mainly bogs). I habitually wear a titanium bracelet (my own...
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18 years ago
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Failure data for fastener thread laps
Hello, I would like to know if anyone can point me to any research or test data involving the failure of threaded fasteners due to thread laps. I have read several sources that claim the laps are...
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19 years ago
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motorcycle frame fire damage/heat treatment
I have heard of a fire damaged 1982 kawasaki z1000 which may be restorable. (steel duplex tubular frame with plates) My intention would be a ground up restoration and frame bracing. The bike's melted...
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20 years ago
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