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The making of different alloys using tungsten is really a great achievement . There are many properties of tungsten which make it more powerful metal then other because it's nanocrystals stability . The above information is very helpful for a researcher .

I am sorry, but what you write about the green pure tungsten electrode is just the other way round. It is mainly used to weld aluminium alloys and magnesium which are both welded with alternating current (AC). It is correct that the tip rounds up, which is just what we want to weld aluminium!

Further, the color of the ceriated (2% CeO2) electrode is gray. By the way this electrode welds DC and AC but is especially good on DC!

The orange color stands for one of the thoriated (4% ThO2) electrode. The ceriated electrode basically replaces the lightly radioactive thoriated electrodes.

Still I give you an overview of the colors of the thoriated tungsten electrodes:
WT10 1%ThO2 yellow
WT20 2%ThO2 red
WT30 3%ThO2 purple
WT40 4%ThO2 orange

Nice post. Great information is given for welding aluminium process along with the helpful tips. This information is going to be so useful for welding department of an industry.

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