The torch should be moved slightly from side to side to obtain good fusion. Mig wire electrode label meaning for a er70s6 label. When choosing a welding rod, the welder has to consider the type of welding and the material being welded. Apr 26, 2017 the e means that it is an electrode suitable for arc welding. In order to help you get to grips with this complex subject, weve put together the ultimate guide covering all. This is a copper coating on the electrode and there are different types too. In metal arc welding the electrodes used are metal and carbon in a cutpiece stick electrode rod of definite length and diameter while automatic and semiautomatic welding electrodes use bare wire in coils. The beginners guide to different types of welding rods. The mig welding electrode is a continuously fed wire referred to as mig wire. Stick welding is also the term of choice in the field for smaw, the acronym for shielded metal arc welding. Resistance welding robotic welding safety and health sheet metal shielded metal arc welding shielding gases soldering stainless steel steel see also carbon steel, stainless steel, structural welding structural welding stud welding. Smaw or stick electrodes are consumable, meaning they become part of the weld, while tig electrodes are nonconsumable as they do not melt and become part of the weld, requiring the use of a welding rod.
Every welding rod has a number that is assigned to it based on american welding society aws standards. In this case that is 60, so the maximum tensile strength of the 6011 and 60 electrode is 60,000 psi. The first two or 3 numerical digits represent the tensile strength of the filler material, measured in thousands of pounds per square inch. The third welding number shows the directions in which you can use the electrodes. The size of the bead can be controlled by varying the speed of welding and the. Stick welding smaw shielded metal arc welding electrodes sticksrods are designed for use with specific current types, either ac, dc and some rods can be used with either. The first two digits of a 4digit number and the first three digits of a 5digit number stand for tensile strength.
These rods can be used to weld painted, greasy and rusty steel. The e7018 is a versatile welding rod, frequently used for low and medium carbon steel welding. May 03, 2020 the welding rod is inserted into the puddle and the base plate and rod are melted together. Shielded metal arc welding covered arc welding electrodes. This rod runs completely different from the 6010 and 6011 rodsit is much smoother and easier. The classification of welding electrodes hg coded welding. A welding rod is used during the welding process to add material into the weld zone. Powered by cspec weldoffice, meaning qual american welding society aws sets the requirements and guidelines for filler metals and rods. A variety of welding rods, including 6011 and 7018 rods, offer different features. The american welding society aws numbering system can tell a welder quite a bit about a specific stick electrode including what application it works best in and how it should be used to maximize performance. The molten weld beads are protected from contamination, moisture, and hydrogen in the atmosphere by the ironcontaining powder. Being able to differentiate between the types of welding rods and being aware of their strengths, weaknesses, and best uses is just one of those features which have a huge impact on the strength and quality of your welds. The number e6010 indicates an arc welding electrode with. The first two welding rod numbers stand for the tensile strength of the filler material.
What you need to know about welding electrodes tulsa. The electrode and metal object melt and form a solid on cooling. Electricity is run through a welding rod, creating an arc of live electricity at its tip and allowing for welding to take place. In the field, welding electrodes are usually referred to as welding rods so i will use that term here.
Carbon steel electrode classification meaning washington alloy. Welding consumables consumables are those materials that are used up quickly and need to be replaced. Welding rod definition is a rod or heavy wire that melts and thus supplies metal in fusion welding. Gmaw mig welding electrodes are designated by some letters and numbers such as er70s6, er90s6 and e308l etc. Jun 06, 2018 a welding rod is the generic name used to refer to electrodes or filler metal that is used to join two other base metals when performing shielded metal arc welding smaw. Arc welders use a variety of different electrodes, also referred to as welding rods. For general purpose welding, 60 welding produces a smoother finished weld bead. The layman might be puzzled by the array of letters and numbers that are printed on the end of welding electrodes. Certain types of stainless steel rods may have letters or numbers after the three digits, such as l meaning low carbon. Welding rod reference chart typical applications descriptionhow to identify plastic symbol welding rod profiles bumper covers, headlight housings, inner fender liners, splash shields, fan shrouds, gas tanks, underhood parts, interior parts, snowmobile cowls usually black, sometimes gray. Classification numbers either by jis japanese industrial standards or. This can be found in asme bpvc section ix, table qw442.
Welding rods are of different types with the most common welding rod sizes. These numbers are often used to match the filler rod to specific compositions of base metals being welded. The rod can be smaller, however it will require more than one pass to complete the weld. The last digit when read in conjunction with the penultimate digit indicates that it has an iron powder low hydrogen coating, so it can be used with ac. Apr 26, 2017 the first two numbers or three if it is a five digit number indicate the tensile strength in thousands of pounds per square inch psi.
In most cases, the third number will be 1, meaning the rod can be used in all positions. The last number represents which coatings have been used on the rod. The flux contains almost no hydrogen, and the rod produces smooth, strong welds that are very ductile. The number e6010 indicates an arc welding electrode with minimum stress relieved tensile strength of 60,000 psi. Also referred to as a lowhydrogen rod, this electrode has a flux coating with a very low hydrogen content, allowing a minimal amount of hydrogen into the weld puddle. With that in mind, lets take a look at the system and how it works.
Selecting the right stick electrode stick welding takes a lot of practice to master, and selecting the correct electrode for the job can be challenging. In mma welding, an arc is struck between the electrode and the object in question. Many experienced pipe welders use these allposition electrodes for root welding passes on a pipe. The molten weld beads are protected from contamination, moisture, and hydrogen in the atmosphere by the ironcontaining.
Displaying all worksheets related to welding terms. These numbers 1 have been assigned to base metals and filler metals alike, grouping materials to reduce the number of welding procedures and welder performance qualification tests needed to qualify a wide range of materials base metals and filler metals. Welding electrode classifications mild steel coated electrodes e7018x e indicates that this is an electrode 70 indicates how strong this electrode is when welded. In this system, metal class, the principal alloying agent, and the average carbon content percentage are detailed. A number grouping has been done on the basis of the chemical composition of the deposited weld metal.
All unitor electrodes are issued a fume class number. The molten weld beads are protected from contamination, moisture, and. What is the meaning of welding electrode code e7018. If you want to print it out you can either click the image for a larger view and click print or here is my stick welding rod chart in pdf format. Standard metal numbers, codes, classifications and designations updated may 2020 the system used for metal numbers that classifying metals and their alloys is found in specifications and drawings. The following two numbers indicate the tensile strength of the material in the rod when the weld is stress relieved. Xx designates the minimum tensile strength of the deposited weld metal. Choosing the right welding rod will determine the how easily the weld is performed, and how strong the weld will hold. This is measured in thousands of pounds per square inch. Er an electrode or filler rod that is used in either a mig wire feed or tig welding 70 a minimum of 70,000 pounds of tensile strength per square inch of weld ssolid wire 6 the amount of deoxidizing agent and cleansing agent on the electrode. However, 6010 electrodes feature an extremely tight arc, which can make them difficult for novice welders to use.
Stick welding rods for arc welding explained youtube. Worksheets are math on metal, blue reading esstentials in welding, cte mathematics in welding professional math iv unit, welding, lesson plans for module 29101 15 w safety, introduction to welding, lesson plans for module 29201 15 welding symbols, welding. Next will be either a 4 or 5 digit number stamped on the electrode. For example, e6010 means 60,000 pounds per square inch psi tensile strength and e10018 means 100,000 psi tensile strength. By looking at the classification, we already know that the 7018 welding rod is an allposition rod which produces weld beads which can withstand 70,000 pounds of stress per square inch. Welding rod definition of welding rod by merriamwebster. Among all the other types of welding, the stick electrode welding is considered to be portable, simple and reliable. The american welding society aws has a numbering system that offers information.
Rods come in sizes from 116 to 516, so a typical number would indicate a 18 inch e10011 rod. The base metal grouping scheme consists of the p numbers and group numbers. Our range of high performance electrodes, rods and fluxes offers an optimum solution for every welding application. An electrode or a welding rod is a wire which is made up of wire and is coated. Most of the welding rods will use the aws system which stands for. The welding rod is inserted into the puddle and the base plate and rod are melted together.
Another type of grouping for filler metal or welding rod is the a number. The first two numbers or three if it is a five digit number indicate the tensile strength in thousands of pounds per square inch psi. There are many types of welding rods, and it would be good to know what each of these welding rods has to offer. May 07, 2014 in this video of the longevity learning lab, we explain the differences in stick welding rods from diameter, size, and types.
Stabilizers in the flux make 60 welding electrodes one of the simplest rods to use. The classification of welding electrodes what do all the numbers refer to that are printed on electrodes. Welding rod sizes and uses what welding rod do i use. Fnumbers the fnumber grouping of electrodes and welding rods given in table b. In certain cases namely smaw and stick welders the wires actually melt, becoming part of the weld itself. Numbers for mild or low alloy steel electrodes begin with an e prefix meaning electrode followed by a four or fivedigit number in most cases. The third number tells you the position in which the welding rod can be used. The definition of the weld metal described in this catalog is a weld metal. The higher the number the stronger the stick electrode. Hydrogen creeping into a weld tends to reduce elongation, or the ability to st.
The electrode is made up of materials which are similar to that of the metals chosen to be welded. The e means that it is an electrode suitable for arc welding. And since scores of product lines exist, along with a variety of classification systems, ordering these items can be something of an adventure. Ferrous metals which have specified impact test requirements have been assigned group numbers within pnumbers. The welding rod is the piece of wire connected to the welding machine.
Base metal grouping for welding procedure and performance. Difference between 6011 and 7018 welding rods sciencing. Apr 02, 2020 smaw or stick electrodes are consumable, meaning they become part of the weld, while tig electrodes are nonconsumable as they do not melt and become part of the weld, requiring the use of a welding rod. There are a wide range of stick electrodes available, each provide different mechanical properties and operates with a specific type of welding power source. Way more information than you ever wanted on how to fell a tree. In this video of the longevity learning lab, we explain the differences in stick welding rods from diameter, size, and types. Discovering the 7018, 60, 6011 and 6010 welding rod sizes. This grouping is made to reduce the number of welding procedure and performance. During welding, a welding machine creates an electric arc that travels out through this rod and on to the material being welded. More of a drag rod, the 7018 is also referred to as a lowhydrogen, or lowhigh, rod in the field. As it melts, the central electrode acts as the filler material to create the new, seamless solid mass. Aug 12, 2017 gmaw mig welding electrodes are designated by some letters and numbers such as er70s6, er90s6 and e308l etc.
There are a lot of different welding electrodes and wires out there. For carbon steel or mild steel such as er70s6 or er70s3 where, er designates electrode or filler rod. Feb 17, 2011 stick welding electrodesrods numbers, meanings and uses. With a slightly heavier slag covering, try to keep the arc in the puddle. If the wrong welding rod is chosen the weld might not work at all. The diameter of the welding rod should be half the thickness of the metal you are using. The 308 designates a specific stainless steel chemical composition. For example, e6010 is a 60,000 psi tensile strength electrode while e10018 designates a 100,000 psi tensile strength electrode. In metal arc welding the electrodes used are metal and carbon in a cutpiece stick electrode rod of definite length and diameter while automatic and semiautomatic welding electrodes use bare wire in. North americas largest fleet of welding and positioning equipment welding electrode classifications mild steel coated electrodes e7018x e indicates that this is an electrode 70 indicates how strong this electrode is when welded.
Smaw or stick electrodes are consumable, meaning they become part of the. This will determine the diameter of the welding rod that you use. What do the numbers and letters mean on welding rods. My old arc welding chart click image for larger view. For example, the lincoln 7018 welding rod numbers show that the tensile strength is 70,000 psi. Please watch the video given below for more clarity on this topic. What you need to know about welding electrodes tulsa welding.
E7018 is one of the most common used stick electrodes rods. The tensile strength of a welding rod can be determined by the first two numbers in the electrodes name. In this way, the welding rod acts as a source of resistance, generating heat that melts the rod into a pool of molten metal. Coating, current and polarity types designated by the fourth digit in the electrode classification number. Its mostly the coating or flux where the magic happens. The size of the bead can be controlled by varying the speed of welding and the amount of metal deposited from the welding rod. Mig welding electrodes wire selection, charts settings and. The next digit indicates the welding position in which the electrode is capable of making a satisfactory weld 1 all position. The first two digits of a 4digit number and the first three digits of 5digit number indicate minimum tensile strength. An electrode consists of a metal core wire with an insulating covering fluxcoated.
Sep 04, 2019 the e7018 is a versatile welding rod, frequently used for low and medium carbon steel welding. If you plan on welding aluminum or stainless steel, you must buy a mig or 230v arc. Jul, 2016 an electrode or a welding rod is a wire which is made up of wire and is coated. A welding rod is the generic name used to refer to electrodes or filler metal that is used to join two other base metals when performing shielded metal arc welding smaw. A welding rod is a stick of filler metal used to join materials together during the welding process. Dec 01, 2007 many experienced pipe welders use these allposition electrodes for root welding passes on a pipe. P number, f number and a number in welding asme section ix. A current is fed through this wire, which helps to join two pieces of metal together firmly. It consists of an allpurpose filler metal designed for use with direct current dc and suitable for welding pipes. The number code of the electrode is known as its aws, or. Measure the thickness of the metal you are welding.
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