• 2% THORIATED (RED) EWTh-2/WT20.
• 0.8% ZIRCONIATED (WHITE) EWZr-8/WZ8.
• 1.5% LANTHANATED (GOLD) EWLa-1.5/WL15.
• 2% CERIATED (GREY) (Formerly Orange) EWCe-2/WC20.

• Rare-earth, Grey. Rare-earth tungsten material comes with various additives such as rare-earth or hybrid combinations of oxides. ...
• Pure, Green. For starters, pure tungsten is suitable for use with AC but not DC. ...
• Lanthanated, Gold. ...
• Ceriated, Orange. ...
• Thoriated, Red. ...
• Zirconiated, Brown.

Who makes the best tungsten electrodes?

Overall Best: MTS TIG Welding Tungsten Electrodes 2% Thoriated (3/32″)

What does DC mean in welding?

Direct current is an electric current that has a constant polarity flow in a single direction. This current can be positive or negative. With DC welding, since the magnetic field and current of the arc are constant, stable arcs are produced.

What is 4% thoriated tungsten used for?

Thoriated tungsten is the most commonly used in the United States. This tungsten is used primarily in DC welding. It has a low work function and provides a high load and amperage capability.

Which type of tungsten electrode is suitable for welding of SS by TIG process with DC?

Lanthanated tungsten maintains a sharpened point well, which is an advantage for welding steel and stainless steel on DC or AC from square wave power sources.

Which electrode is used in MIG welding?

The metal inert gas (MIG) process uses a consumable electrode, which is usually in the form of a copper-coated coiled wire. Argon is used to shield the weld, and direct current with the electrode being positive to generate more heat for melting.

What is an E3 electrode?

E3 Tungsten are electrodes with rare earth mixed oxides. Compared to thoriated electrodes, E3 is less harmful to the environment and not radioactive. E3 Electrode Features and Benefits: Excellent ignition and consistent welding properties.

What color is E3 tungsten?

3/32 in E3 (purple) Tungsten for TIG Welding.

What is the best tungsten for welding aluminum?

If you are AC TIG welding aluminum for the first time we would suggest using a 2% ceriated in 3/32. Two solid options include Blue Demon or Weldcraft. Ceriated is the most popular choice due to the easy arc start at low amperages.

What are the 3 types of electrode?

The three primary categories of electrodes—cellulose, rutile, and basic (low-hydrogen)—obtain their name from the coating type.

What are the three types of electrodes?

Types of Electrodes: Gas electrode, metal metal salt electrode, etc.

What are electrodes used for in welding?

Welding electrodes

In arc welding, an electrode is used to conduct current through a workpiece to fuse two pieces together. Depending upon the process, the electrode is either consumable, in the case of gas metal arc welding or shielded metal arc welding, or non-consumable, such as in gas tungsten arc welding.

What type of electrode is used in TIG welding?

Tungsten Inert Gas (TIG) welding, also known as Gas Tungsten Arc Welding (GTAW) is an arc welding process that produces the weld with a non-consumable tungsten electrode.

Which tungsten electrodes are efficient for welding on steels?

Orange Ceriated TIG Welding Electrodes contain about 2% percent ceriated and are ideal for DC welding and lower current processes. Since it can weld carbon steel, stainless steel, nickel alloys, and titanium, some welders have found that it works well as a replacement for thoriated electrodes.

What alloy material for tungsten is recommended for both AC and DC GTAW welding?

Blue tungsten is a good substitute for thorium oxide. It provides proper arc ignition and is more long-lasting than thoriated electrodes. It can be used for both AC and DC welding with both transformer and inverter power sources.

Are Thoriated electrodes radioactive?

Thoriated tungsten electrodes contain thorium, a radioactive material that can pose health and environmental risks at elevated exposure levels.

What is the difference between Thoriated and Lanthanated?

Some electrodes have limitations between AC and DC or can only be used in certain ways. For example, thoriated tungsten cannot be used in AC welding but lanthanated tungsten can be used for AC and DC, with few limitations, if any. Lanthanated tungsten allows you to start and maintain your arc at lower voltage levels.

Can you weld aluminum with thoriated tungsten?

Use a pure tungsten or zirconiated tungsten electrode when AC welding aluminum. Don't use a 2 percent thoriated tungsten electrode. Make sure you use a tungsten electrode large enough in diameter to carry the welding current you plan to use. Remember that AC welding requires larger–diameter tungsten electrodes.

Is 7018 welding rod AC or DC?

The 7018 welding rods are used for pipe welding and structural steel welding and repair welding. This low-hydrogen, usually DC, all-position electrode can also be used with AC, which not many welders may know. The 7018 provides a good bead appearance and smooth, strong welds.

What is the difference between DC and DC welding?

What are the primary distinctions between alternating current (AC) and direct current (DC) welding? The distinction is in the polarity. DC welding utilizes a direct current with a single polarity, whereas AC welding rapidly alternates between DC negative and DC positive polarity.

Is 7018 DC positive or negative?

Is 7018 DC positive or negative? 7018 will run on both polarities but runs better on DCEP. Electrical charges flow from the negative side to positive more easily compared to forcing it to flow from positive to negative, whereas the molten metal tends to flow to the negative terminal.