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Mercury!

Although it is a metal, it's also a liquid at room temperatures, so things might get a little awkward and messy, not to mention dangerous. There are probably a couple of other rarer ones too with similar attributes.

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Q: What kind of metal is the most difficult to weld?
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Related questions

What weld is the most difficult to make?

School


Is mild steel one of the more difficult metals to gas weld?

No. It is the easiest to weld as the metal puddles well, and the heat runs evenly through the joint.


If your worried about your metal health where can you get help?

Well what kind of metal are you dealing with? Unless you see rust or cracks in the metal it should be fine. Are you looking to weld this metal?


Is it welt the metal or weld the metal?

Weld is a verb which means joining two pieces of metal together.


What is the height of a weld above the base metal in a groove weld called?

a crown


The rate at which weld metal si added to the weld is known as the?

deposition rate


What is a face of a weld?

in reference to the acutal weld metal-it is the "bead", what you see on top.


What is a Autogenous weld joint?

It is a weld made by melting the edges of the materials to be joined, but adding no filler metal to the weld.


What is the weld reinforcement shall fair smoothly from the weld to the base metal?

It means, that the Weld Bead/ Weld Metal must be very well blended with the Parent Material/ Base Metal. There shall be a smooth transition between the Base Metal and the Weld ( Face or Root ) Reinforcement without any sharp or sudden changes ( e.g. Sharp Edges- commonly seen on the weld toes-, Peaks, Metal Inclusions- filler wire/metal/material inclusion-, dents, sudden variations or deviations in the weld dimensions...). ..You're gonna be able to see more of this requirements in the aerospace industry. The Chosen One


Can you weld nonferrous metal?

yes


How do you calculate weld deposit metal weight?

At first, the area of cross section of the weld, length of the weld, volume of the weld in cubic inches, weight of weld in cubic inches. To express in formula: Weight of Weld Metal = _ Êx ÊBase Êx ÊHeight Êx ÊLength Êx ÊWeight of Material.


Why do welds crack?

It is usually not the weld but the metal right beside the the weld. If a piece of metal needs to be welded, it may be getting thin in other places and when it is welded, the heat from the weld can weaken the metal and in some cases cause the metal to crystallize and be more brittle than it was.