what is the difference between the red & blue electrodes?

The following information is from weldingweb (dot) com.ZIRCONIATED Tungsten Color Code WHITE or BROWN, are best suited for AC Tig welding applications.Zirconiated, White, AC Welding applications. Better start up than Pure Tungsten, Balls up well and has a more stable arc than Pure Tungsten. Better current carrying capacity and high resistance to contamination during welding.LANTHANATED Tungsten Color Code BLACK, GOLD or BLUE, is suitable for AC & DC welding applications.Lanthanated, Black, AWS Class EWLA-1.5, AC & DC welding applications. Non-Radioactive Good arc characteristics in ac/dc applications. Applications: carbon & stainless steel, nickel alloys and titanium.CERIATED Tungsten Color Code GREY or ORANGE, are best suited for low amperage DC welding applications.Ceriated, Grey, An excellent alternative to Thoriated tungsten especially in low amperage welding. Takes 10% less current to start and has a very stable arc.PURE Tungsten Color Coded GREEN, are best suited for AC Tig welding applications.Pure Tungsten, Green, AWS Class EWP, AC welding applications. Least expensive of all electrodes. Applications: aluminum and magnesium alloys.THORIATED Tungsten Color Code RED, YELLOW, MAUVE or ORANGE, is best suited for DC Tig welding applications.2% Thoriated, Red, AWS Class EWTH-2, DC welding applications. The most common type of electrode used today. Applications: carbon & stainless steel, nickel alloys and titanium.

What do the colors mean that are on the tungsten?

Blue=2% Lanthanated Red=2% Thoriated Green=100% pure tungsten

Can I weld stainsteel and aluminum with this rod

Yes but it probably can only weld thinner aluminum 1/8 or less because aluminum uses ac and a lot more amps then dc steal welding Remember to round your electrod by reducing to balance to 30% until it melts to round ballon end. Then back to 70% and start welding to your aluminum

What type of Tungsten do you prefer for stainless steel . Thank you

This is primarily for running AC on a transformer machine (aluminum, magnesium, etc.). For stainless I would recommend a ceriated, thoriated, or a trimix type tungsten.

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Midwest Tungsten Service TIG Welding Tungsten Electrodes 10-Pack (Blue - 2% Lanthanated Tungsten (WL20/EWLa-2), 3/32")

Midwest Tungsten Service TIG Welding Tungsten Electrodes 10-Pack (Blue - 2% Lanthanated Tungsten (WL20/EWLa-2), 3/32")

Product ID: 24021002

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⚡Versatile AC/DC compatibility

🔵2% Lanthanated for superior arc stability

🇺🇸Proudly USA-made with expert support

Description

🔧 Weld like a pro, every time — don’t get left behind!

CRAFTED IN THE USA - Manufactured domestically with dedicated customer service for your welding success
PRECISION PERFECTED - Consistent, reliable welds every time with top-rated 2% lanthanated tungsten
CERTIFIED CONFIDENCE - Meets AWS A5.12M/A5.12:2036 standards with free MSDS and conformance certificates
UNIVERSAL POWER PLAY - Seamlessly weld aluminum, titanium, copper & more on both AC and DC currents
ALL SKILL LEVELS WELCOME - Ideal for beginners, pros, and everyone in between—upgrade your TIG game now

Midwest Tungsten Service’s 10-pack of 3/32" 2% Lanthanated tungsten electrodes delivers premium, consistent performance for TIG welding across AC and DC applications. Perfect for a wide range of metals including aluminum, titanium, and steel, these USA-made electrodes are trusted by beginners and professionals alike, backed by AWS certification and expert customer support.

Specifications

Manufacturer	Midwest Tungsten Service
Part Number	40400-allTIG
Item Weight	6 ounces
Package Dimensions	8.03 x 2.32 x 0.28 inches
Item model number	40400-TigAll
Is Discontinued By Manufacturer	No
Size	3/32"
Color	Blue
Material	Blue - 2% Lanthanated
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No

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