Thoriated tungsten has a stable arc and easy start up. TIG, GTAW and, When you choose a diameter, the Tungsten electrodes typically come in a 10-pack. Rule Of Thumb in Tig Welding. A crystal lattice is a repeating pattern of mathematical points that extends throughout space. Blue: best for delicate work in both AC and DC welding. Tungsten - Crystal Structure A possible crystal structure of Tungsten is body-centered cubic structure. Tungsten electrodes come in color-coded options with various sizes and types to choose from. Pure tungsten is probably the least used type of rod. The 2% lanthanated tungsten options can be used with all metals like aluminum, steel, magnesium, titanium, nickel alloys, copper, and more! For kilogram piece weight calculations, the formula, using inch dimensions is: THICKNESS x WIDTH x LENGTH x .316 = KILOGRAMS. Nevertheless, the filler rods are sold with "ER" in their name, not just "R.". The tungsten sheet surface can be supplied in a shiny, matte, satin, or as-rolled condition; dependent upon thickness and width parameters. Choosing the right tungsten for the job is almost as important as your ability to do the job. Dont feel like you have to go buy some of every size or type of electrode for your toolbox. What is the best polarity? This is the best option for beginners. Simple arc starts, a wide range of amp compatibility and low erosion rates also contribute to the usefulness of this electrode type. Tungsten flat material from 0.10 and larger is classified as plate. If you are using 1/16 (1.6mm) when unsticking the tungsten from the wok piece, you can easily bend or break them, causing unnecessary cost. Maximal current capacity, durability, and resistance to conductivity are the hallmarks of this newer blend of metals, though it comes in at a fair bit of a higher price point than other options, though the enhanced longevity does mean youll eventually get more than your moneys worth. Size is both easier and harder to nail down. Tungsten Pure tungsten is a steel-gray to tin-white metal. This might also be called straight polarity for welders who have been in the game for a long time. But thats not to say theres no merit in having more than one type of tungsten rod on hand. All sheets are lot controlled and ship with a material certificate. However, some tungsten does use AC so be sure you are familiar with the requirements for what you are doing. 4 shot, switch to No. Red: best for cost effective DC current welding for beginners (lower up front cost). 6 in a tungsten load for a bigger pattern, more range and more forgiveness. With this method, approximately 2/3 of the heat is transferred to the positive side of the arc and helps to reduce the likelihood of overheating because you have a negative torch. TIG welding is unique in that it uses a mostly non-consumable resource: the tungsten rod. For anything above, a 1/8 option will do fine, as it can stand up to amperages that would melt the 3/32 rod. The tungsten electrodes are used to produce the weld and then a filler metal is contributed to make the seal. 12-20-2008, 08:08 PM. Our customers know they can trust us for even the most exacting needs, and we have the experience and knowledge to ensure that tungsten and molybdenum material characteristics and properties are critically controlled for a superior end product performance. The amount of current determines the diameter of the electrode. This pure tungsten sheet meets international . Again, this is something that could be easier to adjust to as you become more skilled or you may decide that you will always prefer the mid-size diameter for strength and versatility both. If the application requires microwire TIG (copper-in . See the chart below for current ranges of . two-stage sample size calculator IT 2.0: C/C#/C++ Programming with Data Structures tula rashi lucky colour IT 2.1: Object Oriented Programming with C++ brazelton touchpoints principles IT 3.0 Programming in Java - Core hilarious inappropriate facts IT 3.1 Programming in Java - Advanced For beginners it's recommended to stick with a 3/32" diameter tungsten. Dont let yourself get overwhelmed with the myriad of options thrown at you. Brian grew up in Fort Collins, Colorado. Tungsten flat material from 0.060 to 0.090 in thickness is classified as sheet. You may find that you need several sizes but keep in mind the length is pretty standard while the diameter can vary. WHA for Medical Shielding & X-Ray Imaging, Elmets Expanding Cubes & Spheres Capabilities. It has a solid, steady arc with very little spitting. . Zirconated tungsten can be slightly more limited but it is a good option. Otherwise it will burn up if to small. You will hear three names for tungsten electrodes when it comes to welding processes. Below are some of the most commonly produced tungsten welding electrodes for TIG DC, TIG-AC, and Plasma welding: 2% THORIATED (RED) EWTh-2/WT20. In TIG welding of stainless steel, welding rods having the AWS-ASTM prefixes of E or ER can be used as filler rods. If the material being punched is .078 (2,00) thick mild steel the smallest . Is it as simple as any tungsten that will carry enough current to adequatly weld the material in question? All times are GMT-6. Elmet Technologies is growing rapidly! DC TIG welding is also the cleanest weld with . Tungsten Plate is produced with a standard anneal, Surface Finishes: As-rolled or Ground. For TIG welding, common choices include #4 (1/4), #5 (5/16), #6 (3/8), #7 (1/16) and #8 (1/2). Other General Notes Regarding our Tungsten Plate: Tungsten Plate is produced with a standard anneal Here are the most common diameters used in TIG welding. This TIG welding tungsten is great for all-purpose use as well. First, it makes the tungsten electrode better able to resist sagging or deforming at the high temperatures it reaches during welding. Tungsten fiber-reinforced tungsten (Wf/W) composites are being developed to improve the intrinsic brittleness of tungsten. For the Tig Calculator that is. In the case of MIG wire, it's the electrode, while in the case of TIG cut wire, it's an R - rod. There exists no free and universal guideline for choosing TIG welding cups. Tungsten flat material from .025 to .09 inches in thickness is classified as sheet. Elmet offers a wide range of cold rolled sheet product in varying thickness and lengths. In metals, and in many other solids, the atoms are arranged in regular arrays called crystals. Follow the normal precautions for welding stainless such as . Do welding rods go bad? Many people make this mistake because the welding stores mostly carry the 1/16 size only. So how do you decipher which one is right? There is a process known as DCEN this is DC electrode negative. Lanthanated tungsten has a solid arc with less spitting. If you stick to the versatile options, you wont need as many electrodes in your toolbox. Welding Empire is a participant in the Amazon associate program. It can be used for alternating currents as well. Try and use 2% lanthanated TIG Tungsten on whatever you are working on and honestly, you may never go back. In this study, the . Well-known for the highest melting point and the lowest vapor pressure of all metals, Tungsten has many practical applications. Thicker materials uses a higher current, thus a bigger tungsten is needed. Getting into les pure territory, this type has a solid (2%) concentration of thorium oxide, which makes it suitable for DC current use. It is the electrode that produces the arc for the weld and really does the work. Tweet. Our process starts with raw metal powder that is then pressed into ingots, sintered and hot rolled. It possesses similar positive qualities to white rods. Please contact info@midwesttungsten.com to inquire about custom or out-of-stock sizes. In this article, I will explain the most appropriate tungsten rods you need to use for TIG welding. The beauty of tungsten is you also can reduce shot size and retain all the benefits of the larger lead or steel, with a lot more shot in the pattern. GTAW was the official name at one time but it is now commonly referred to as TIG. He holds certificates for Certified Welding Educator (CWE) and Certified Resistance Welding Technician (CRWT). It is stable and solid. We are now capable of machining tungsten sheets with a range of thicknesses from 0.012 (3 mm) to less than 0.004 inches (0.1 mm). It lasts a long time and provides a steady weld. If you are new to TIG welding, this article will help you a lot. However, only bare uncoated rods should be used. One important rule for choosing proper amperage for TIG Welding Aluminum is to use 1 ampere for every thousandth (1/1000) of the aluminum thickness. Below is a table that summarized the correct choice of tungsten diameter in relation with your amperage and base material thickness: Base Material Thickness (inch) Tungsten Diameter (inch) Amperage Range (A) 1/16: 1/ . If you normally use No. Elmet offers a wide range of hot rolled tungsten plate and cold rolled tungsten sheet product in a range of thicknesses, widths, and lengths, as outlined below. Make sure you size your electrode to the current or you will not have a stable arc. Thicker materials will require more current and thus bigger tungsten. This ensures that our products consistently deliver the performance and quality required by our customers. #2. Come join our team were hiring for several positions. We can cut, size, or roll the products to customer-specified thickness, length, and surface finish, as well as customize other material properties. He is an experienced welder who has always been interested in welding from a young age. Principal Oxide: 1.7-2.2% Thorium Oxide. The process enables us to tailor the product to meet specific customer material and performance requirements to ensure optimal performance in your application. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); document.getElementById( "ak_js_2" ).setAttribute( "value", ( new Date() ).getTime() ); 1560 Lisbon St, Lewiston, ME 04240 | Connect on LinkedIn | Come Join Our Team! So, this guide is here as a handy way to break down the different types of tungsten rod on the market, what they are in general used for, and how to pick what size tungsten rod you should use for a given job. If youre a beginner and still working on getting familiar with the different techniques, we recommend that you start out using 3/32, which is 2.4 mm. Try and use, The principal oxide of 2% lanthanated tungsten is 1.8 2.2 percent, You will hear three names for tungsten electrodes when it comes to welding processes. In the early stages of TIG welding, it is very easy to accidentally stick the tungsten to the job. Zirconated tungsten has a principal oxide of 0.7 0.9% zirconium oxide. There is also a 1.5% lanthanated option but it is slightly inferior and not as versatile. If youre still on one of the older machines, zirconated or pure (green) tungsten may still be a really great option. Second, it makes it easier for the tungsten electrode to emit electrons. All told, there are six different variants of tungsten rod, suitable for different purposes. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); document.getElementById( "ak_js_2" ).setAttribute( "value", ( new Date() ).getTime() ); 1560 Lisbon St, Lewiston, ME 04240 | Connect on LinkedIn | Come Join Our Team! Dont worry, weve got you covered in this comprehensive guide. It is particularly suited for low amperage work, making it extremely good for delicate projects using thin metal sheets of all varieties, and can be used for both AC and DC work so long as the amperage is kept low for both. Made with 2% cerium oxide concentrations, ceriated tungsten could be considered the premium DC welding material. Tig Welding Guide. It is also compatible with both AC and DC power. Use water-cooled torch when welding with more than 200 amps. I can follow you can melt a rod if too much current, but how bad is the arc if you are using a large rod for thinner work. Melting Point: 3420 C, highest metal, 2nd highest of elements, Low coefficient of thermal expansion (CTE), High elastic modulus Tungsten Rod Options. This means that if the material being punched is .078 (2.0) thick aluminum, it is reasonable to punch a .059 (1,50) diameter hole with the above listed styles of tooling. For beginning with TIG welding, practicing with 1/16 to 1/8 inch thickness is a good start. There is also a DCEP process but it is less common and should not be confused with the process we have detailed above. You can use zirconated tungstens for high amperage cases. Tungsten flat material from .1 and larger is classified as plate. The 3/32 (2.4mm) is a better choice as it has a thicker diameter and is less likely to bend or break when it sticks and you have to unstick it from the job. Argon welding is very popular among both industrial and, The materials you need for your TIG (or any, Choosing the right tungsten for the job is almost. 1/16 filler wire is too LARGE. Discuss your application 1.800.343.8008 | [emailprotected] | Follow on LinkedIn. A single tungsten rod can last you a long time, the same as a drill bit and many other power tool components if youre not using them for stuff that stresses their limits. Tungsten Size - The size of your tungsten will depend on the application. The external filler metal is often a filler rod but the materials can vary. Choosing your size will vary depending on what you are working on and the TIG process. If you only own one size of each type of rod you need, a 3/32 rod should probably be the size you pick. It can handle medium to high amperage as well as low amperage but it also has a tendency to spit a bit when welding. Tungsten sheet is used in a wide variety of applications including in the fabrication of sintering boats, as components in high-temperature furnaces and as heat shields. See below for standard sizes and call for Information on other sizes or options: Elmets fully integrated manufacturing means that we control each step in the production process from metal powder to finished product. Welding Empire 2020 All rights reserved. A quick rundown of the three major sizes: Of these three, 3/32 is by FAR the most commonly used. It is the diameter that really makes the difference. It still balls easily, but retains its shape due to the minor zirconium content it contains (~.4% at the most) and is less prone to contamination, but is still at least 99% pure tungsten. * Height/Thickness: 0.002" 0.003" 0.005" 0.01" 0.015" 0.016" 0.02" 0.025" . Mild Steel 1 to 1. Material Punch to Material Ratio: Aluminum .75 to 1. In essence, the options are as follows: White: best by far for AC current. These are the most common diameters you will find but there are manufacturers out there who distribute some varying sizes that are even slightly smaller than what we shared here. This includes the type of weld, thickness of the material, and the desired output of the welding torch. As you become more practiced and more advanced, you will start to get a feel for the varying diameters and will be able to use different sizes if necessary. Best Way To Remove Welding Spatter From Glass, MIG Welding Gas | Get The Best Gas For Your Welding, 2% Lanthanated Tungsten Uses The Only Tungsten You Will Ever Need, Tungsten Electrodes | How To Select Size & Type. His passion to help others develop through new skills and opportunities led him to become an instructor at the local welding school where he teaches students how to weld, fix equipment, assemble parts of different machines. If not order on-line.heck, order the set for $4.00, money well spent tig welders handbook. Radioactive. Tungsten is has a hardness of approximately 7.5. Ultimately, DC polarity is what is most commonly used. The process enables us to tailor the product to meet specific customer material and/or performance requirements to ensure optimal performance in your application. Tungsten flat material from 0.10 and larger is classified as plate. We also recommend sticking to 2% Lanthanated tungsten. I enjoy welding and I think TIG welding is industrial tai chi. Tungsten has a density that is approximately 1.7 times higher than lead, therefore it provides a higher degree of shielding. Elmet Technologies unmatched expertise in powder metallurgy makes us the go-to producer for tungsten and molybdenum. There are different lengths available but you will normally see a length of about 7 inches or 175 mm. and.are the amperages for a particular size thoriated tungsten safe to use on the same size ceriated and lanthanated tungstens. How does one determine the appropriate size tungsten for a given material thickness? TIG welding offers the user the greatest amount of flexibility to weld the widest range of material and thickness and types. These purple banded rods are the cream of the crop for DC welding, though have no AC use whatsoever. Molybdenum and Tungsten flat products are rolled and annealed to provide the optimum condition for the desired end use (Furnace, Punch, Deep Draw). Elmet is a global leader and the only US owned and operated, fully integrated manufacturer of pure tungsten metal plate products. It is a viable option for applications where lead is not a feasible option, including for size reduction, and maximizing weight in large or small cavities for radiation shielding. It is a non-radioactive material. While tungsten is incredibly durable, particularly in terms of heat resistance, its also prone to contamination when welding. . Tungsten flat material from .025 to .09 inches in thickness is classified as sheet. Tungsten sheet is used in a wide variety of applications including in the fabrication of sintering . Now the question of should you use TIG Tungsten with AC or DC or some other combination? Let's take a look at a standard ER70S-2 TIG welding rod and explain its classification: Letters "ER" stand for E - electrode, R - rod. As a general rule of thumb, for welding steel on AC or DC, use 2% thoriated tungsten electrodes (larger is better). Heres the thing to remember they are ultimately the same process. In this type of process, shielding gas is used for welding. Other key factors include Tungsten as an excellent material for high vacuum technology, dimensional . Next, we have a blue color-coded electrode option. Tungsten flat material from 0.060 to 0.090 in thickness is classified as sheet. The principal oxide of 2% lanthanated tungsten is 1.8 2.2 percent lanthanum oxide. It really doesnt get much better than that in terms of usefulness and versatility. Similar to throiated tungsten, it has above average durability and is suitable for use with DC current. Pure tungsten (green) is largely worthless, and lanthanated tungsten (gold) has dubious advantages over other choices. In conclusion, lets review our recommendations, particularly if you are a beginner welder. One more thing to consider is that you may find yourself doing a lot of grinding of the electrode to sharpen it and prepare it. Elmet Technologies is growing rapidly! GTAW was the official name at one time but it is now commonly referred to as TIG. Decide on the Tungsten Electrode Diameter and Cup Size The size of your tungsten electrode mainly depends on the material thickness and the amperage needed to achieve a proper weld. Thoriated tungsten is a red color-coded electrode with a principal oxide of 1.7-2.2% thorium oxide. We recommend that beginners work with 3/32 TIG Tungsten. Elmet offers high-quality molybdenum and tungsten plate in standard plate thicknesses supported by over $30 Million in recent capital investments in a 2nd large hot rolling mill. . Although thoriated electrodes tend to be the favorite for a one-size-fits-most welding approach, some electrodes are better for particular metal combinations. While there are six types of listed tungsten rod, for the most part only four are worth talking about. Different sizes of tungsten electrodes are required for different applications depending upon the material thickness, composition, and power source. Sizes: Elmet produces Tungsten flat products in thicknesses from 0.060 to over 1.00. All tungstens are the same length but they have different diameters to measure up to the job at hand. If this is your first visit, be sure to For an idea how effective tungsten is, look at Chart II showing the . You can use it with any type of metal and you can also use it with AC or DC power. TIG, GTAW and argon welding are suitable Tungsten processes. Elmet is a leading global provider of high-quality tungsten sheet products and the only fully integrated US owned and operated producer. It is also always beneficial to follow the manufacturer's recommendation and Welding Procedure Specification (WPS) sheet when setting up welding equipment and selecting the electrode size. As we progress through this guide of TIG welding electrodes, its important to know that there are several TIG welding tungsten options that have the ability to weld a wide range of amperage with both DC and AC. It will take too long to melt. It balls easily, making it easy to control, but can really only be used for AC current. Elmet offers a wide range of hot rolled tungsten plate and cold rolled tungsten sheet product in varying thickness and length and per our customer request. As an example, 3/32 tungsten being able to carry 150-200 amps, could be used to weld up to about 3/16" thick steel (using 1 amp per .001" material thickness). They work well, are easy to use, and have a surprising amount of longevity, making them one of the options of choice for serious welders. This makes red and white sort of the bread and butter options for cheap TIG welding usage. This has long been one of the universal go-to options for any metal and strength for DC compatibility. If youre just getting started welding, understanding what amperage you should choose for what metal youre welding is by far a more important skill than choosing your tungsten rods size. This size (3/32 or 2.4 mm) is not overly large but it has a positive strength point and is compatible with the majority of welding amperage needs and ranges. This type of electrode has a stable and easy arc and is one of the best options available. This is the typical torch polarity setup and uses a negative torch and positive work. Elmet produces Tungsten flat products in thicknesses from .025 to over 1 inch. Together, these mean that a thoriated tungsten electrode can carry more current than a pure tungsten electrode of the same diameter. Stainless Steel 2 to 1. An even less common name for GTAW is argon welding. For welding stainless or aluminum on AC or DC, try a pure tungsten electrode (tungsten with no other elements added), around 1/16 inch in diameter. These diameters are inch measurements but we will show the metric conversion as well. The number . WHA for Medical Shielding & X-Ray Imaging, Elmets Expanding Cubes & Spheres Capabilities. In these composites, engineered fiber/matrix interfaces are crucial in order to realize toughening mechanisms. Following the powder metallurgy is a series of further deformations and heat treatments until the required products are finished. Best $1.50 you'll ever spend. This is why it is so important to choose an appropriate or versatile TIG welding tungsten electrode for your process. Best for use on non corroding steels . Tungsten flat material from .1 and larger is classified as plate. This is another electrode that has always been used as a multi-purpose choice for AC power. Browse suggested weld parameter settings for Stick Welding, TIG Welding, MIG (Solid-Wire) Welding and MIG (Flux-Core) Welding. An even less common name for GTAW is argon welding. AFFILIATE DISCLAIMER: WELDSUMO.COM IS A PARTICIPANT IN THE AMAZON SERVICES LLC ASSOCIATES PROGRAM, AN AFFILIATE ADVERTISING PROGRAM DESIGNED TO PROVIDE A MEANS FOR SITES TO EARN ADVERTISING FEES BY ADVERTISING AND LINKING TO AMAZON.COM. While still for AC use only, zirconiated tungsten is used for professional applications as a cheaper option than others. The general rule of thumb is 1 amp per thousandth of material thickness. Use a .035 diameter ER70s-2 filler wire. Remember with TIG the secret is HOT,CLOSE,FAST. I enjoy finding researching new products related to welding so I though I may as well publish my findings to help others. A fairly uncommon and untested option, lanthanated tungsten boasts solid stability and arc starting capability due to its greater conductivity, courtesy of the 2% lanthanum content. Thoriated tungsten can work with a variety of metals, including challenging metals like aluminum, nickel alloys, steels, copper, and more. The end doesnt always break cleanly and you may have to use a grinder to cut or score it. Tungsten has the highest melting point and lowest vapour pressure of all metals, and at temperatures over 1650C has the highest tensile strength. Discuss your application 1.800.343.8008 | [emailprotected] | Follow on LinkedIn. Tungsten Precision Cut Wire. Smaller tungsten sizes tend to snap more easily. Join Date: Aug 2006. Use a 1/16 2% thoriated tungsten. SIZES: Elmet produces Tungsten flat products in thicknesses from .025 to over 1 inch. While in some forms of welding the rod will deform and need to be ground back into shape using a grinding wheel, for the most part the process of welding doesnt do much to the rod, and even in the case it needs to be resharpened like a pencil lead, youre losing very little material. TIG Welding Tungsten Electrode Selection Chart Many of our customers are often looking for a good reference for which electrode type to choose while welding different metals. MIG welding gas can either be reactive or non-reactive. The reason being a 3/32 rod can be kludged to work just as well at extremely low currents, essentially doing the job of a 1/16 rod with no real drawbacks. TIG stands for tungsten inert gas and GTAW stands for gas tungsten arc welding. Zirconated tungsten can be used with a variety of metals, particularly aluminum and magnesium alloys. Pure tungsten (green) is largely worthless, and lanthanated tungsten (gold) has dubious advantages over other choices. This could easily be a trick question. The short answer is, In this guide, we will walk you through the. Cheap, widely available, and maybe usable for a hobbyist, but not for professional work. check out the. There are many variables affecting the selection of tungsten size, including polarity, base metal thickness, joint size, etc. You can compare 2% lanthanated to thoriated tungsten in terms of versatility and strength but lanthanated tungsten is non-radioactive, which sets it apart a bit. As with all of our materials, our sheet begins as metal powder, is pressed into ingots, sintered, and then rolled. #1 Tungsten size & amp chart per metal thickness 09-20-2004, 01:40 PM Can some one tell me if there is a chart that tells what size tungsten and amperage setting should be used on a particular gage and kind of metal. The size of tungsten for TIG welding used will depend on many factors. As an Amazon associate we earn a commision from qualifying purchases. Surface can be supplied in a shiny, matte, satin, or as-rolled condition; dependent upon thickness and width parameters. For any material under 1/8 thickness, a 3/32 rod is perfectly fine for. Different cup sizes are typically used for different types of metals, thicknesses, and applications. Choose something that is versatile for metals, sizes, strength, and stability and you will be good to go for nearly any project. . For example, to TIG weld an aluminum piece that is 1/8 inch in thickness would require 125 amperes. Brand New Midwest Tungsten Service 99.95% Pure Tungsten Sheet . These are thankfully color coded for ease of understanding among operators, and essentially denote what kind of metal compound the tungsten is, with one exception. In some industries, this has been the standard multi-purpose TIG welding tungsten to have on hand at all times. However, as the thickness of the base material is higher, the above rule is no longer correct. In years past, this was the go-to option for AC/DC transformer machines but technology has adapted and new machines have a different inverter setup. Pure tungsten is also a bit of a misnomer, as it is only 99.5% pure. I find 3/32" (2.4mm) lanthanated to be good for 130-210 amps, and go up or down from there. In this type of process, shielding gas is used for welding. Different types and sizes of rod are better for different jobs, and using the wrong tool for the job is always going to lead to issues. Light gauge metals less than 1/16" (1.6mm) thick should always be welded with DCSP using argon gas. When you choose a diameter, the Tungsten electrodes typically come in a 10-pack. Mainly on the material thickness and the amperage needed to achieve a proper weld. Please contact us to discuss large quantity demand for sizes thinner than 0.060. Typically, it is suggested to choose the diameter of your rod base don the amperage of the current you intend to put through it. Come join our team were hiring for several positions! Check your local distributor, I always have some laying around in our showroom. For such a purpose, yttria (Y2O3), being one of the suitable interface materials, could be realized through different coating techniques. While the 1/8 or higher option is necessary for higher amps, that amount is unlikely to be necessary for the average TIG welder, who is most likely going to be working with relatively thin sheets of whatever material theyre working on. You may find that you need several sizes but keep in mind the length is pretty standard while the diameter can vary. Millerwelds home page bottom right! When AC options are limited, zirconated tungsten delivers. Elmet produces Tungsten flat products in thicknesses from 0.060 to over 1.00. You cant beat the versatility or the strength of 3/32 2% lanthanated tungsten. The metal oxidises in air and must be protected at elevated temperatures. TIG stands for tungsten inert gas and GTAW stands for gas tungsten arc welding. 7mm metal is .027 thousandths thickness. TIG/GTAW uses tungsten electrodes in the welding process. Posts: 9276. CHEMETAL USA is a recognized manufacturer and supplier of high quality tungsten sheets. Share. Ed Fagan Inc. is a leading supplier when you need the refractory metal, Tungsten (W). This page was generated at 07:10 AM. TIG/GTAW uses tungsten electrodes in the welding process. Tungsten Electrode Diameter: Torch Cup Orifice Diameter: Use ceramic cup when welding with less than 250 amps. To choose the best cup size for a particular welding . And third on our list of the main types of TIG welding tungsten options is Zirconated tungsten. Can some one tell me if there is a chart that tells what size tungsten and amperage setting should be used on a particular gage and kind of metal andare the amperages for a particular size thoriated tungsten safe to use on the same size ceriated and lanthanated tungstens. Next, we have a blue color-coded electrode option. Best for use in direct current (d/c) applications using transformer based constant current power sources. Molybdenum and Tungsten flat products are rolled and annealed to provide the optimum condition for the desired end use (Furnace, Punch, Deep Draw). 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