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Old 03-07-2017, 11:10 AM
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Default Blue Tungsten

Was at the LWS picking up an assortment of tungstens for stock and the guy mentioned that the blue ones weld anything, you guys have any opinions?
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Old 03-07-2017, 12:41 PM
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Radnor (AirGas) has some 1/8" purple-stripers I've been using on Al: 150A with a point (inverter machine). They seem to work OK but need occasional resharpening when they start crackling. They were actually cheaper than the greens (pure).
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Old 03-07-2017, 12:55 PM
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http://www.thefabricator.com/article...ten-electrodes
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Old 03-07-2017, 01:25 PM
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Commonly Blue or sometimes Gold banded (lanthanated) tungstens are a pretty good general purpose electrode. It does bring some nice characteristics of Thoriated, Ceriated, and pure tungsten all into 1. The only downfall that I am aware of is that it has a tendency to split at higher amperages. For me that means keeping some pure tungsten on hand for thicker aluminum.

Also important to note, it is NOT limited to use with inverter machines.
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Old 03-07-2017, 01:49 PM
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Just like Lincoln machines, Red is best!

I normally used 2% Thoriated on all things.

As for some of the newer blends coming out, just be sure to know that not all of the blends are approved by AWS or ASME with a specification number and shouldn't be used for code work.
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Old 03-07-2017, 07:51 PM
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Quote:
Originally Posted by JBFab View Post
Commonly Blue or sometimes Gold banded (lanthanated)
IIRC Gold is 1% lanthanated and Blue is 2%.

They are a good all-around tungsten.
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Old 03-13-2017, 10:34 AM
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Any of the lanthanum-oxide tungsten server as good all-around electrodes. Gold (1.5%) is almost just as good as the 2% blue band on DC, but it has slightly lower current capacity. You won't tell the difference unless you're already at the top of its range, then you might get more tip erosion. On AC, 2%La is much better and hoods its point very well.

The tri-mix tungsten are pretty much 1.5%La with of course the additions of other rare-earth elements such as yttrium, zirconium, cerium, or others. This would include the E3's (purple), Diamond Ground (white), HTP Quad-mix (dark green), CK LaYZr (chartreuse), and most anything else that is a mix.
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Old 03-13-2017, 07:37 PM
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Wink 2% Lanthanated (BLUE)

+1 for 2% Lanthanated (BLUE) as an all around AC and DC electrode...................

As far as I can see.... the E3/Tri-Mix tungstens are more a marketing gimmick than anything else

IF....I could see any advantage... I would gladly spend the premium for the E3...

BUT I DON'T..... so why spend extra to no avail....??

Maybe the E3 work better in Transformer machines... But ...in my experience...they are sure not the hot tip in inverters like the Dynasty

Here are a couple of TUNGSTEN videos worth watching

Tungsten Electrodes Review

https://www.youtube.com/watch?v=DzEuV83UGMY

Tungsten Electrodes - 2% lanthanated vs the rest...pure,ceriated,thoriated, and zirconiated

https://www.youtube.com/watch?v=bpanERwagaU

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Old 03-15-2017, 02:05 PM
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Quote:
Originally Posted by DeepSeaDynamo View Post
Was at the LWS picking up an assortment of tungstens for stock and the guy mentioned that the blue ones weld anything, you guys have any opinions?
I do alot of TIG but it is all ferrous stuff, mostly stainless steel, in DC. I pretty much stick to red or gray. My choice goes like this :
1.) Whichever is being supplied by whoever I am working for
2.) Red if I have a choice
3.) Whatever is cheaper if I am paying for it
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