September 2, 2022 . Read More The important oxide in ceriated tungsten electrodes is cerium oxide and is available in about 1.8 to 2.2%, while the lucid tungsten synthesis is at least 97.3%. However, if the skin is too sensitive, it can cause irritation. When You Breathe In Your Diaphragm Does What. Only diamonds are softer than other tungsten alloys. The color red is synonymous with thoriated electrodes. Some welders have a particular favorite kind of tungsten. Finally, lanthanated electrodes are not toxic, unlike thoriated tungsten and other alloys. These MTW tungsten electrodes are well-known for their excellent conductivity, longevity, and efficiency. I learned different metal properties in the New Jersey Institute of Technology, and I know everything about all kinds of metal. They work particularly well with magnesium and aluminum alloys and are ideal for application with low to medium amperage requirements. Required fields are marked *. One explanation for this is the various beneficial characteristics they exhibit. The purple tungsten really is a true non-radioactive alternative to the thoriated tungsten electode. Properties of aluminum welding with tungsten electrodes. 6 Cerium Tungsten, EWCe-2. A pointed tungsten electrode was traditionally used to strike the arc, but now we know that balled tungsten yields better results. Pure Tungsten (Green) Electrodes perform well in AC applications and are great for welding magnesium alloy and aluminum alloy. Pure tungsten also provides good arc stability for AC sine wave welding, especially on aluminum and magnesium. Lanthanated Tungsten also has zero radioactive hazard levels, which is a major plus. Diamonds are used to form the toughest alloys. DC is used for TIG welding Mild Steel/Stainless material and AC would be used for welding Aluminium. Midwest Tungsten Electrodes 2% Thoriated the best for the price! It provides the optimal heat generation, bead formation, and weld penetration to give smoother welds. Aluminum Tig Welding Rods 4043 aluminum tig rod - the most versatile for 3003, 6061, a355 aluminum castings etc. It is quite similar to EWLa-2 in that it has excellent current carrying ability, excellent arc starting ability, and can last through many different arc start and arc termination cycles. You can get a super useful result. Ceriated Tungsten Electrode is a nonradioactive material. It is additionally conceivable to utilize them in DC applications. Zirconiated tungsten electrodes have welding characteristics that generally fall between those of pure and Thoriated tungsten. Cerium Tungsten Electrodes For Aluminum Welding Grey Tip. Make sure you use a tungsten electrode large enough in diameter to carry the welding current you plan to use. I have to admit that I've never used the gray, which I believe is 2% cerated.someone will surely correct me if I'm wrong. and do yourself a favor and get some 4047 aluminum filler rod for castings where porosity rares its ugly head. What is Grey Tungsten Used For? The E3 Tungsten is designed to give better arc starts and a longer lifespan for the electrode compared to pure Tungsten. TIG welding produces cleaner and more precise welds than MIG welding or other Arc welding methods, making it the strongest. A high consumption rate means you'll burn through them fast Grey electrodes perform well in DC applications and are great for welding titanium, copper, magnesium, aluminum, and nickel alloys, as well as non-corroding and stainless steels. They are made of 99.95% pure tungsten. Thanks to this tungsten's 2% ceriated (grey) it has a reliable arc-strike, high arc quality, and low burn-off rate while complying with ANSI and AWS standards. . How is Tungsten Balled for Aluminum Welding? EWCe-2 tungsten electrode is currently color-coded with a gray band, although in the past it was color-coded with an orange band. They provides you the most versatile tungsten on the market. [pricingtable id='3996'] Choose the Best Aluminum Folding Chair [modalsurvey id="973355057" style="flat"] Customer's Choice: the Best Rated Aluminum Folding Chairs [survey_answers id="973355057" style="plain" data="score"] users answered this survey. $19.50 $ 19. For Inquiries email me at 5thstreetfab@gmail.comhere's my affiliate link for the welding coupons! Machined from 7075-T6 forged aluminum. . The Genssi electrodes are 2% lanthanated and are ideal for welding aluminum. Please rest assured to wholesale customized ceriated tungsten for aluminum from our factory. Why is green tungsten used for aluminum? Arc stability is excellent. 3mirrors ALUMINUM Tungsten Electrode Sharpener Grinder for TIG Welding Tool w/Cut-Off Slot Multi-Angle& Offsets, 4 Copper Screws Holes& 2 Upgrade CNC Mandrels& 5 25mm Diamond Wheels& Instructions . These welding torches are perfect for both AC and DC applications as well as welding aluminum alloys, magnesium metals, nickel steel, copper titanium, low-alloy steels and non corroding stainless steel. Works well with transformer TIG welders as well as inverters. It's ironic that a quote reminding us of the necessity to pay attention to the details . These electrodes are more useful for DC welding, as opposed to green electrodes. It also resists contamination well in AC welding. 2% ceriated: Seen in the grey coloured label, these electrodes consist of 2% cerium. They're very good with magnesium and aluminum alloys, and they're perfect for applications requiring low to medium amperage. Tungsten as a term comes from the Swedish word tung sten. Is E3 tungsten good for aluminum? Midwest Tungsten Service TIG Welding Tungsten Electrodes 10-Pack (Blue - 2% Lanthanated Tungsten (WL20/EWLa-2), . 3mirrors ALUMINUM Tungsten Electrode Sharpener Grinder Head TIG Welding Tool w/Cut-Off Slot Multi-Angle& Offsets, 4 Copper Screws Holes& 2 Upgrade CNC Mandrels& 5 25mm Diamond Wheels . That said, different welding jobs may require different methods, while TIG is generally stronger and higher in quality, you should use MIG or another method if the job calls for it. However, pure tungsten electrodes can only be used in DC for welding aluminum. When buying tungsten electrodes, most welders make a mistake with this element. Tungsten Cerakote has become a popular option for builders who want a "disruptive gray" color for their custom AR-15. Plus, their quality tags attached meet high expectations of performance, as verified by . To weld aluminum, TIG is usually used. When welding aluminum, use AC current and a ceriated (gray identifying band) or 1.5% lanthanated (gold identifying band) tungsten. However, pure tungsten electrodes can only be used in DC for welding aluminum. Low amp crisp DC starts and restarts. CK worlwide tungsten gives you excellent performance. At lower temperatures, this method of welding electrode is widely used for pipe fabrication, welding thin metals,and small, specific sections. Above everything, this machine is cost-effective you wont have to split the bank. Can you apply the purple tungsten electrodes for aluminum welding? It is additionally conceivable to utilize them in DC applications. 2% ceriated: Seen in the grey coloured label, these electrodes consist of 2% cerium.Usually, these electrodes are used for aluminum in lower amperage DC welders. TIG Welding Tungsten Electrodes 2% Lanthanated (3/32) CLICK FOR PRICE Youre far less likely to have to deal with contamination in the weld from the electrode mixing metals. This is why you should look for an AC TIG machine for aluminum welding. Tungsten Electrodes for Tig Welding 2% Grey Ceriated Tungsten Assorted- 5PCS 3/32" + 5PCS 1/16", Zinger TIG Welding Tungsten Electrodes 2% Ceriated (WC20/EWCe-2) Grey,10-Pack 3/32" Ceriated Tungsten, 2% Ceriated TIG Welding Tungsten Electrodes 1/8 x 7 10-Pack, Rstar TIG Welding Cerium tungsten electrode 3/32 x 7 (Grey, WC20) 10-Pack, 10-Pack Tungsten Electrodes for Tig Welding 2% Ceriated Tungsten WC20 1/16" x 7" Grey, Pre-Ground TIG Tungsten Sharpened Electrodes Grey 2% Ceriated 5-Pack (3/32" x 1.5"), uxcell TIG Welding Tungsten Electrodes 2% Ceriated 5/64" x 5.9" Grey WC20 10pcs, 2% Ceriated WC20 Grey TIG Welding Tungsten Electrode (0.40" 1/16" 3/32" 1/8" 4pcs), TIG Welding Tungsten Electrode 2% Ceriated 3/32" x 7" (Gray, EWCe-2) 10-pk YESWELDER, 2% Lanthanated TIG Welding Tungsten Electrodes 3/32 x 7 10-Pack, NICETECH TIG Welding Tungsten Electrodes 2% Ceriated 1/16" x 7" (Grey, WC20/EWCe-2) 10-Pack, TIG Welding Tungsten Electrodes, 2% Ceriated Tungsten Electrodes, 1/8" x 7", Gray, WC20/EWCe-2, 10Pack, Blue Demon Welding Tungsten Electrodes, 2% Ceriated, GRAY, EWCe-2, 3/32 in x 7 in 10 pc pack TEC-332-10T, All customers get FREE Shipping on orders over $25 shipped by Amazon. Pure Tungsten (Color Code: Green ) FAQ: What color tungsten is best for aluminum? Remember that AC welding requires largerdiameter tungsten electrodes. 2.0% Lanthanated, For Welding Steel, Stainless Steel And 4130 Tubing. Please help us improve this review! Lanthanated electrodes often display no differences in terms of welding machine type; they are consistent with TIG welding machines. This is excellent for any stainless steel. Luckily, most beginners only have to worry about choosing between red, green and purple. When welding, consumers can use the tungsten that is ideally suited to their technique, as well as a material such as. Futuro Deluxe Wrist Stabilizer Right Hand, Photo . Green electrodes are ineffective for DC welding. They work admirably in both AC and DC applications. Besides aluminum alloy, this aluminum welding tungsten can be used in titanium alloy, copper alloy, carbon steel, stainless steel, low-alloy steel. These sorts of terminals are called 2% ceriated and are reasonable for low-current AC use. Pulsar Manipulation Device For Sale, What is Grey Tungsten Used For? It has the density (within 0.36 percent) that ensures that if you sprinkle a tungsten brick with gold. To work with aluminum compounds, youll require pure tungsten electrodes. Lanthanated electrodes need the least voltage to be broken down, making arc formation very simple. It is determined by the state of your skins wellbeing. 2% ceriated orange tungsten electrodes for AC only; 2% lanthanated blue tungsten electrodes for both DC and AC; 1.5% lanthanated gold both for DC and AC; What is the best tungsten type for aluminum welding? TIG welding aluminum with gold lanthanated electrodes is possible in both AC and DC environments. Most metal collectors would inform you that the Blue 2 percent Lanthanated Tungsten Electrode is the best tungsten. Disadvantage: They are not well suited for DC welding. 2% ceriated: Seen in the grey coloured label, these electrodes consist of 2% cerium. You may also use it for welding carbon, titanium, copper, and everything in between. CK worlwide tungsten gives you excellent performance. Blue tungsten is a good substitute for thorium oxide. Pure tungsten electrodes comprise of 99.5% tungsten, which means it balls easily. 2.) It is mostly used for AC welding. Aside from welding, this kind of electrode is commonly used in the lighting industry. By continuing to browse the site you are agreeing to our use of cookies. Pure tungsten also provides good arc stability for AC sine wave welding, especially on aluminum and magnesium. There are a lot of options when it comes to choosing tungsten. They conveniently split apart and grind. Midwest Electrodes Pure Tungsten the best for AC welding! AC, 100-200 amps, purple tungsten 1/8", 30 cfh Argon I don't remember having this much trouble with the red tungsten the last time I was doing aluminum. Every welder has a favorite kind of tungsten; some choose thoriated tungsten, whereas others choose pure tungsten. 1.5 percent Lanthanated tungsten electrodes have consistent arc starts while still maintaining a smooth and steady arc throughout. E3 Electrode Features and Benefits: Universal and suitable for all applications for DC and AC welding pf non-alloyed and high-alloyed steel, aluminum, Welding, or arc welding, is one of the most popular applications for tungsten. Read the comparison table, buying guide and product reviews. They are unable to generate deep arcs like ceriated or thoriated electrodes. Tungsten has the highest melting point of any metal, 3,410 degrees Celsius. It can be used for both AC and DC welding with both transformer and inverter power sources. Ceriated is the most popular choice due to the easy arc start at low amperages. 2 Percent Ceriated Grey Tungsten Electrode. Ceriated, Blue These types of electrodes are often used for low-current AC but can also be used for DC applications. [survey_answers id="37533954" style="piechart" legend="true"] [survey_answers id="37533954" qid="1" aid="1" style="plain" data="answer_percentage"] of users selected [survey_answers id="37533954" qid="1" aid="1" style="plain" data="answer"], [survey_answers id="37533954" qid="1" aid="2" style="plain", [pricingtable id='3636'] Choose the Best Best Aluminum Wheel Cleaner [modalsurvey id="361520838" style="flat"] Customer's Choice: the Best Rated Best Aluminum Wheel Cleaners [survey_answers id="361520838" style="plain" data="score"] users answered this survey. Mitsubishi Lancer Coilovers, Green: pure tungsten (AC only) Don't use green on the AC side since pure tungsten will ball up, especially if you're using an inverter. Just be aware that the technique is different than that used for AC. That makes it flow better, with less porosity. It possesses superior repeatable ignition characteristics. and do yourself a favor and get some 4047 aluminum filler rod for castings where porosity rares its ugly head. But dont get us wrong: were not saying the thoriated tungsten electrode is totally useless; it has benefits over the lanthanatedelectrode as well. This is a high-quality electrode at a low cost. There are 5 stable isotopes and 21 unstable isotopes of natural tungsten. What type of tungsten is GREY? Tungsten electrodes are used in arc welding with inert gas and tungsten (TIG). You often need to consider a 1/8 electrode for welding aluminum in order to get enough heat and to create a stable arc. Usually, these electrodes are used for aluminum in lower amperage DC welders. 4 Pure Tungsten, EWP Welding Electrode. The electrodes are common due to the ease with which an arc can be struck and the lower amperage needed. If youre into AC welding, the size will go up to 3/32 inches, making it one of the biggest categories of electrodes in terms of tungsten content for aluminum. Tungsten is a magical thing for TIG welding sectors. 1.888.727.3031 | earthing and lightning protection pdf 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. Use a pure tungsten or zirconiated tungsten electrode when AC welding aluminum. WC20 Tungsten Electrode. https://weldmetalsonline.com/?ref=5THSTREETFAB coupon code . Don't use a 2 percent thoriated tungsten electrode. I'm a James Miller, and I'm an expert in materials science. Because they are intended for low amperages, ceriated tungsten electrodes are ideal for welding thin and intricate parts, in particular, thin sheet metal work. As one of the most professional ceriated tungsten for aluminum manufacturers and suppliers in China, we're featured by quality products and good service. Although each tungsten electrode has advantages and disadvantages, the 2% lanthanated tungsten electrode is one of the better tungsten for aluminum welding. Please help us improve this review! They perform best with titanium alloys, copper alloys, magnesium alloys, aluminum alloys, nickel alloys, non-corrosive steels, and low . The electrodes mentioned above can be appliedfor TIG welding aluminum. 2% ceriated electrodes are known for their durability. Put the sharpened electrode aside for 10 minutes, letting it cool down. The element can be found in the minerals scheelite, huebnerite, wolframite, and ferberite. Color code and what it means The main colors/varieties of TIG electrodes and their American Welding Society abbreviation are as follows: Green (EWP) = Pure Tungsten, Orange (EWCe-2) = 2% Ceriated, Red (EWTh-2) = 2% Thoriated, Gold (EWLa-1.5) = 1.5% Lanthanated, Brown (EWZr-1) = 1% Zirconiated. The ball tip form enhances the arc's stability. That's why I want to share my experience with you. GENSSI Tungsten Electrode Blue WL20 the best for long service! Grey electrodes perform well in DC applications and are great for welding titanium, copper, magnesium, aluminum, and nickel alloys, as well as non-corroding and stainless steels. So, for aluminum and magnesium, use green electrodes. TIG welding relies on precision and professionalism. [survey_answers id="1881267964" style="piechart" legend="true"] [survey_answers id="1881267964" qid="1" aid="1" style="plain" data="answer_percentage"] of users selected [survey_answers id="1881267964" qid="1" aid="1" style="plain", [pricingtable id='3916'] Choose the Best Aluminum Bat [modalsurvey id="37533954" style="flat"] Customer's Choice: the Best Rated Aluminum Bats [survey_answers id="37533954" style="plain" data="score"] users answered this survey. It has a low work function and provides a high load and amperage capability. Stability at 200 amps on AC with a 3/32" tungsten. This makes for consistent welding without inclusions when making custom parts. They can also be familiar with the application of tungsten on top of aluminum. It means heavy stone. Sharpen one side of the pure-tungsten electrode to a spiky tip using a bench grinder. 2% Ceriated (Grey) Grey 2% ceriated electrodes are popular due to their extreme ease of striking an arc with lower amperages, and their extraordinary performance with regard to both AC & DC welding applications. 2.) Your email address will not be published. Pure Tungsten (Color Code: Green) Pure tungsten also provides good arc stability for AC sine wave welding, especially on aluminum and magnesium. Use a pure tungsten or zirconiated tungsten electrode when AC welding aluminum. This tungsten is used primarily in DC welding. 3 Thoriated Tungsten, EWTh-1 and EWTh-2. Make sure you use a tungsten electrode large enough in diameter to carry the welding current you plan to use. Rare Earth gray tungsten electrodes produce several oxide combinations in one location. Two solid options include Blue Demon or Weldcraft. These electrodes are common with those who weld regularly or as a hobby due to their flexibility and durability. They offer the medium to high amperage range along with decreased erosion rate. Hereof, what color is 2% thoriated tungsten? 2% ceriated: Seen in the grey coloured label, these electrodes consist of 2% cerium. Please help us improve this review! Check for the additive forms and percentages to see how they will operate a reliable arc in both AC and DC welding. Since there arent enough arcs in DC. Tungsten is used at very high temperatures as it resists melting and degrades very little (if working in a controlled atmosphere with inert gases as is. There's a quote by an unknown author that says "God is in the details.". document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); 2022 FAQS Clear - All Rights Reserved 10 Best Tungsten For Aluminum Welding Reviews I spent hours developing my understanding of tungsten and finally came up with a list of products that have earned customers' appreciation. Grey Tip Tungsten Electrode. The fact that you would use both hands when welding is what most people find difficult with this method of welding. It is 2% ceriated with 98% tungsten for which it is marked with the color grey. The price is relatively lower than that of other alloys, but it is almost the same. The purple tungsten really is a true non-radioactive alternative to the thoriated tungsten electode. The working life of pure tungsten electrodes is short. Please help us improve this review! It possesses superior repeatable ignition characteristics. The fact that you would use both hands when welding is what most people find difficult with this method of welding. It provides proper arc ignition and is more long-lasting than thoriated electrodes. Heads up, a 2% lanthiated electrode will weld steel and aluminum well. Each tungsten electrode offers different characteristics that can affect the weld. E3 Electrode Features and Benefits: Universal and suitable for all applications for DC and AC welding pf non-alloyed and high-alloyed steel, aluminum, titanium, nickel, copper, and magnesium alloys. Electrodes of grey color are ideal for DC applications and are perfect for welding titanium, copper, magnesium, aluminum, and nickel alloys. Tungsten is a very delicate metal. This is because they always result in a sloppy welding technique. A 2% thoriated tungsten electrode resists forming a ball in the end which is advantageous when welding aluminum. That makes it flow better, with less porosity. Tungsten is a magical thing for TIG welding sectors. EWCe-2 tungsten electrode is currently color-coded with a gray band, although in the past it was color-coded with an orange band. 1. Too small an electrode will create a sloppy weld. It is quite similar to EWLa-2 in that it has excellent current carrying ability, excellent arc starting ability, and can last through many different arc start and arc termination cycles. What type of tungsten is GREY? Tungsten is applied in a variety of applications due to its high strength and durability. TIANLYLIN 36pcs TIG Tungsten electrodes Grey, WC20 Gas Lens Collet Body 4# - 12# Pyrex Cup Kit DB SR fit WP 9 20 25 TIG Welding Torch. I recommend that you practice for a while before you decide to use it on actual components. What is Green Tungsten Used for? This polarity provides a cleaning action that helps remove and break up the oxide layer on aluminum, creating a nice flowing weld puddle. A pointed tungsten electrode was traditionally used to strike the arc, but now we know that balled tungsten yields better results. The GTAW process relies on tungsten's hardness and high-temperature resistance to carry the welding current to the arc. Hello! Don't use a 2 percent thoriated tungsten electrode. SKU#- AR15BUILDER15K-TG. Sociology Deviance Assignment, August 30, 2021. You can get a super useful result. The green paint on a tungsten electrode signifies it is pure tungsten. While this color is a deep gray, it's easily distinguished from standard black receivers, and has a subtle metallic effect. On the opposite, these electrodes are picked for a wide range of metals, from aluminum and steel. Properties of aluminum welding with tungsten electrodes Tungsten Inert Gas (the short is TIG) in the specific aluminum welding is the process of delivering current to the welding arc using a non-consumable tungsten electrode. 2.5 out of . Zirconiated electrodes are 99.1% pure tungsten with 0.15-0.4 percent zirconium. Tungsten is a rare metallic element used for manufacturing gas tungsten arc welding (GTAW) electrodes. Low-alloyed steels, non-corroding steels, aluminum, magnesium, titanium, nickel and copper alloys are all suitable for these electrodes. Tungsten Inert Gas (TIG) welding requires a non-consumable tungsten electrode. It is extracted from minerals by decreasing tungsten oxide with carbon or hydrogen. 82 users answered this survey. They can also be seen on the TVtube. 3. These sorts of terminals are called 2% ceriated and are reasonable for low-current AC use. They are made of 99.95% pure tungsten. Tungsten Inert Gas (the short is TIG) in the specific aluminum welding is the process of delivering current to the welding arc using a non-consumable tungsten electrode. This is great for Aluminum, magnesium and other metals. 7 Zirconium Tungsten, EWZr-8. Clarion Hotel Helsinki Pool, bactericidal antibiotics mechanism of action, 6001 professional parkway suite 1040 douglasville ga 30134, new forestry bucket truck for sale near zagreb, Ripndip Dragonerm Red 10k Snowboard Jacket, Futuro Deluxe Wrist Stabilizer Right Hand, photography class by michigan state university smartphone to dslr. Properties of aluminum welding with tungsten electrodes Tungsten Inert Gas (the short is TIG) in the specific aluminum welding is the process of delivering current to the welding arc using a non-consumable tungsten electrode. They are excellent for welding aluminum alloys and magnesium alloys at low to medium amps. The Midwest tungsten electrode assists in arc stabilization and directs heat to the puddle. Make sure you use a tungsten electrode large enough in diameter to carry the welding current you plan to use. Home | About | Contact | Copyright | Privacy | Cookie Policy | Terms & Conditions | Sitemap. Call Us Today! These contain a minimum of 99.5% tungsten, with no alloying elements intentionally added. Never apply puretungsten electrodeson alternating current because pure tungsten will ball up, particularly if an inverter is used. Cerium Tungsten Electrodes For Aluminum Welding Grey Tip. What Rod do I use for aluminum TIG welding? For this purpose, it was often used in the manufacture of various forms of lighting. Depending on the mission, they may be balled or sharpened. Can you use gray tungsten for aluminum? If you are AC TIG welding aluminum for the first time we would suggest using a 2% ceriated in 3/32. 2.) The Pure Tungsten electrode is often recommended and used for A.C. welding on aluminum and magnesium. Just be aware that the technique is different than that used for AC. Once obtained, tungsten is often blended into alloys. Its heat resistance is advantageous when used as a heating element in spacecraft applications, electrical furnaces, welding, and other high-temperature uses. 4047 filler rod contains 12% silicon. [survey_answers id="973355057" style="piechart" legend="true"] [survey_answers id="973355057" qid="1" aid="1" style="plain" data="answer_percentage"] of users selected [survey_answers id="973355057" qid="1" aid="1" style="plain" data="answer"], [survey_answers id="973355057" qid="1", [pricingtable id='4034'] Choose the Best Head Gasket for Aluminum Head [modalsurvey id="1881267964" style="flat"] Customer's Choice: the Best Rated Head Gaskets for Aluminum Heads [survey_answers id="1881267964" style="plain" data="score"] users answered this survey. Electrodes of grey color are ideal for DC applications and are perfect for welding titanium, copper, magnesium, aluminum, and nickel alloys. Tungsten Inert Gas (TIG) welding requires a non-consumable tungsten electrode. It is completely the United States manufactured. Cody . Midwest Tungsten 2% Lanthanated Electrodes 10-Pack the best for wide application! The percentage of everyoxide is mentioned in the package. Aside from this element, they contain 2.2 percent cerium. The ball tip shape also gives the arc excellent stability. They provides you the most versatile tungsten on the market. Use a pure tungsten or zirconiated tungsten electrode when AC welding aluminum. This color represents pure tungsten. Pure Tungsten Electrodes or green tungsten are well known for their solid curve striking, low consume-off rate, and excellent bend. The GTAW process relies on tungsten's hardness and high-temperature resistance to carry the welding current to the arc. However, pure tungsten electrodes can only be used in DC for welding aluminum. Heck, I even skipped the pure tungsten (green), and used red while welding aluminum on AC with the transformer-based Synchrowave 350 we had in our shop. It has a balled tip that can be used for AC welding. Use the Correct Polarity That's why it's crucial you use alternating current (AC) polarity when TIG welding aluminum. Usually, these electrodes are used for aluminum in lower amperage DC welders.