A572 steel is a high strength low alloy structural steel known for its versatility. 625 square feet of 3/4" that is VERY FLAT. Repairing AR400 Steel Plates for Gun Range. This is a "die steel" used in a variety of mining, crusher plants, and where ever a Brinnel Hardness of 418-512 is needed (Rockwell C 40-45). 5". We are your Vancouver and Western Canada metal supplier for 304 stainless steel, 316 stainless steel, A36 carbon, 1018 carbon, AR400 carbon, 3003 aluminum or 6061. Wear Resistance = Great. This process alters the microstructure of the steel through the pipe wall, resulting in an inner surface hardness of 600 BHN. POWER MIG 210 MP - From Box to Weld Video. In order to simplify the. At 24 inches by 24 inches the weight goes up to 61. Kromite® #3 and Mirraloy® TGP Welding Guidelines; Kromite® CD Hardness and Strength Comparison Chart; Close; Mirro-Krome 60® (I. but when you consider machining, gripping carbon steel the magnets holding it are sufficient enough to make them permanent magnets because of high carbon content. glass, coke, coal, wood chips, bottom ash, rice, and stone) can cause premature wear. The base steel around the weld rapidly. CO2, the weld has more ductility, more elongation, in almost all cases better charpy V notch tests. Q: What filler metal should be used to weld AR400 plate? A: Abrasion-resistant steel plates, or AR plates, are designed for long service life in harsh conditions, which is the reason for their incredibly high hardness. AWS B2. Differentiators include hardness levels, application uses, and cost. PRODUCT BENEFITS. 5425 N Whitaker Road. Steel suppliers make MIL-DTL or their own products that conform to the mil specs. I have quite a bit of 3" angle that is 3/8" thick that I will use for the majority of the frame. The need for preheat increases with steel thickness, weld restraint, the carbon/alloy content. 1. 50 dual-phase ferritic-martensitic stainless steel, and AR400 martensitic hard plate. Then I'd preheat to 400 degrees F & use either dual shield, or 7018 rod to weld to bucket. AR400 Welding & Machining | Associated Steel CorporationAR500 is a quenched & tempered, abrasion-resistant grade of steel plate. Tweet. Disadvantages of AR400 steel. Hardox® 450 is an abrasion-resistant brand with a hardness of 450 bhn. and A. It has more hardness than the. The versatility of AR400 steel plates come from its hardness and overall flexibility. Overview. These bucket bosses are 2-1/2" thick AR400, and have M12-1. D. To be classified as AR500, the hardness needs to clock in between 477 BHN and 550 BHN. Start running like you just stole third base and your diving for home plate. Stocking over 50,000 Shapes, Sizes, Types and Lengths of Steel, Aluminum, Stainless, Brass, Copper, Cold Finish Steel, Tool Steel and Alloy Steels among our network of warehouses, at Wholesale Prices. Choosing a Welding Power Source. AR200 steel is a medium-carbon manganese steel with moderate hardness that's supplied nationwide across our 40+ branches. Excellent resistance to both impact and sliding abrasion at a moderate cost. A656 Grade 80 is available as temper-leveled, cut-to-length plate or as discrete, as-rolled plate. AR400 Abrasion Resistant, “Thru-Hardened” Wear Plate. I run an AR500 plate from a well known target manufacturer here on. You can find hardness levels for AR400, AR450, and AR500 on their respective pages. I went to my supplier and I can get a 10 foot x 8 inch wide piece of 3/8" AR400 for $150. Some of the most reviewed products in Welding Rods are the Lincoln Electric 1/8 in. CO 2 does a great job stabilizing the arc when MIG welding mild steel. High Chromium Stainless Steel : 10J High Chromium, Molybdenum Stainless Steel : 10K. I suspect they used the standard 500 degF preheat and weld, but overheated on the preheat. By MDG Custom Weld Date 06-17-2008 20:15. You can find hardness levels for AR400, AR450, and AR500 on their respective pages. Welding = Excellent. The provisions of this Standard are not intended for use with steels having a specified minimum yield strength over 700 MPa (100 000 psi). It is considered to have fair formability. Thanks to the excellent impact and wear resistant qualities of our Tensalloy™ steel wear plate—in particular our AR500 — it is used by a number of industries for their toughest applications. 48″, 60″, 96″, 120″. If the weld will not be exposed to abrasion it is possible to weld with E70S-X or E71T-1M etc. Over ½ to 1” 50-150F. AR400 is not suitable for use as a structural steel. The base steel around the weld rapidly heats and cools during welding, resulting in a heat affected zone (HAZ) with high hardness. The electrode is E71-T1 with 100% CO2. . With an extensive collection of products and top-notch services, a perfect shopping experience is guaranteed here. 90” AR400 steel $5395 #1060 + AR400 STEEL + 50" Opening + Upper and lower tines are 1/2" thick AR400 STEEL + Hydraulic cylinders and cylinder rods are guarded. Special Equipment at. Heat it up red hot, straighten. AR400 steel has a variety of benefits that makes it an ideal substitute for almost any application where excessive wear is a problem and ease of fabrication is needed. For multi-pass welds. 05-03-2005, 09:17 PM. dam w/clay around each hole to be drilled to keep fluid in. Years ago I was needing a new cutting edge. Preheating the steel, using low-hydrogen. Care must be taken in order to avoid hydrogen induced cracking. While each grade is a pressure vessel quality high carbon low alloy steel plate, tensile strength varies among them. 4 mm (1 in. 5’ narrower when angled • 54” - 78” Widths • 20” High mouldboard. They are generally main match rifle targets shot at about 8 yds. D3 steel contains 1. Carbon steel grade equivalents table for American ASTM, ASME, and SAE to Europe, Germany, Italy, France, and Japan. ShawnCulleton. Direct sale pricing. Jan 4, 2001 41,599 19 81. I need to make a repair on something that receives a lot of abrasion. Intended for moderate wear applications, common uses. 5" wide and 17' long, and 3/4" thick. AR400 Wear Plate is quenched and tempered steel. voltage, ipm, stick out, work angle, gas mix, flow rate, polarity, thickness of steel and the joint configuration. It feeds exceptionally well, so you won’t suffer wire jamming or inconsistent feed rates. harbor freight torch . If the weld will be subjected to abrasion use an abrasion resistant electrode. For welds non subjected to wear, following welding products can be used: Processes AFNOR DIN AWS Manual coated electrode A81-309 E51 4/3 B DIN 1913 Class E514/3B10 AWS 5-1. Hardness range of this formable wear material is 400-440 BHN. Before welding, the 200mm area on either side of the reverse side of the weld will be simultaneously heated at multiple points to ensure uniform preheating temperature. AR400 plate is suitable for welding. You may find articles and comments, or even data, suggesting that AR400 steel is almost the same as T1 and ar450 steels. Chris, I welded some AR plate back in 1979 or 1980 built a hopper for a local rock quarry. Want easier welding, forging, and maybe a hardened chisel edge but soft. The nickel and molybdenum content gives AR400 carbon steel the ability to resist wear better than all other carbon steel. This publication is an extract of AWS B2. Check Latest Price. arc welding video 2. Bucket Bosses. Choose from our selection of hot-rolled steel, including over 4,000 products in a wide range of styles and sizes. It is a silicon killed, coarse grained steel that requires careful welding techniques. AR400 is a quench and tempered steel and may be difficult to weld due its high strength and hardenability. Workmate; MANG-312; Nickel-90; Ultra-100; Ultra-200; Ultra-300; Alumina Ceramic Wear Tile. Gas-shielded Flux-cored Wire. MECHANICAL INFORMATION: Imperial: Metric: Ultimate Tensile Strength: 180,000 – 200,000psi: 1,241 – 1,379 MPa: Yield Tensile. The manufacturer warns not to heat the steel over 250 deg C after heat treatment. Its a high strength steel with excellent impact and sliding resistance, and decent welding capability. AR400 | AR400F Steel Plate. The tensile strength of AR400, often referred to as the ultimate strength, has been measured at about 200 kilograms per square inch, far more than. 030-Inch MIG Wire – Best Overall. Temper at about 450 degrees F. Hardox ® 450 has been setting the benchmark for quality steel for more than 30 years, for good reason. Depending on the grade this may vary by 25-50 ºF. Metal Fabrication::: We have the biggest machines in the Midwest P: 816-331-7100 F: 816-331-7729, 17247 South US Hwy 71, Belton, MO 64012 or emailDisclaimer: I haven't done AR500, just AR400. Menu. Width. 005" per tooth or probably about 50 ipm on your machine. 1018. welding ar400 steel . 0. Gas Tungsten-Arc Welding (TIG) 가. T21 has a wear life twice that of AR400. A radius of 2. But it’s especially easy to weld. When higher weld strengths are required, electrodes of the AWS. 1080 Steel is non-alloy steel commonly known as carbon steel, primarily used to create wrought iron products. Load More . Oxyacetylene welding method is not preferred for welding this alloy. It is much harder to drill than regular steel. Grades stocked: A514, AR400, AR500, A656-80, A572-50, A36, A588, 4140, 4340. Stick: If you Google TriCon Tri-Braze, it will bring up the data sheets on the chemistry composition and recommended welding proceedures. e. It does seem to weld better. 1: Pre-heat the base material. Thanks for every one's help. T21 has a wear life twice that of AR400. It is typically used when abrasion resistance and high-impact. homemade. CMC Impact Metals’ advanced heat treating, quench and tempering process produces a superior hardness combined with high strength that results in a lightweight, strong and wear-resistant steel capable of withstanding harsh conditions. Hardox is a wear resistant steel; Also, the combination of hardness and toughness made this steel the best choice when looking for both properties. The normalizing process is designed to relieve stresses, which results in improved ductility and toughness. Additionally, mild steel is more ductile than AR400 steel, making it easier to work. TriCon TriBraze, the Sequel. AR400 | AR400F Steel Plate. 03-13-2010, 09:48 AM. Today we will touch base on some key points to look out for when stick welding with 309 rods! It can get messy and a little difficult when you are first star. Over 2” 200-250F. Product is intended for use in applications requiring a combination of high abrasion resistance and weldability. The cost of Hardox varies depending on the grade, thickness, and area of the plate required—generally, the prices for Hardox range from $500 to $1200 per tonne. Plate/Sheet grades including ASTM: A36/SA36, A572 gr 50, ABS/A blasted & coated, A786, AR400, A1011 & A1018 CS-B. However, one disadvantage is malleability. Compared to 1055 carbon steel, 1065 is harder and more durable. Where a weld will be exposed to abrasives, most of the joint can be filled with lower-strength material, with a capping layer of abrasion-resistant weld material applied to complete the joint. Increases steel surface abrasion resistance with improved weldability and formability. Typical hardness range is 385/425 BHN. 5425 N Whitaker Road. Had to put two 5/8" holes in each cell to shoot foam in to fill annular space. Also known as mild steel, low-carbon steel is easy to machine, form, and weld. 4140 steel is a steel alloy that is designated for use in heavy construction and other high-tension applications. Now I'm pretty sure its AR400. Adequate welding procedure. Plate Rolling. All our AR400, AR450 and AR500 have additional alloying elements which increase formability and enhance weldability. A good rule to know is brinell hardness divided by 2 is the approximate tensile strength. 81“ AR400 steel $5195 #1030. 3% Silicon. • Employ/Retain at least one Welding Engineer (Div. 5" wall pins will be 2" welded to the. For instance, you can use AR400 to attach to digging blades and others of the like. The base steel around the weld rapidly heats and cools during welding, resulting in a heat affected zone (HAZ) with high hardness. It's often used as wear strips, liners, and deflector plates. Hardness range is 360/440 BHN with a nominal hardness of 400 BHN. AWS D1. Up to . T-1 steel, unlike AR400, is an alloy steel covered by ASTM A514 / A514M - 05 (2009) Standard Specification for High-Yield-Strength, Quenched and Tempered Alloy Steel Plate, Suitable for Welding. bucket components, construction equipment and wear plates used in plows and farming equipment. It's widely fabricated into parts that don’t require high strength. Higher strength welding filler materials (having a maximum yield strength of 900 MPa (130 ksi) can be used for Hardox. After that, there's Grade 5 Titanium, not as good as AR400 or as easily acquired (Or cheap), but it has half much weight per cubic inch, is almost. 5. Still, this is a typical chemical composition for AR400 steel: Carbon, 0. WELDING AR400 & AR450 have excellent weldability that customers rave about and can be welded with simple procedures and common consumables such as E7018 inclusion shape control. Over 1 to 2” 150F-200F. General Info About AR450 / AR450F. I got a funny look from the guys when I asked if I should be using straight co2. Probably use 4" square for the legs if I. We have a procedure on the books for this. The arc transfer is soft, letting it melt onto the puddle in a small to medium droplet mode. This is used further to. However, the special properties of AR400 Wear resistant steel plate make it the only choice for bulldozer blade and other applications. AR400 steel plates are suitable for applications that requires a good level of abrasion resistance (i. Details. I'm going to have the teeth flame cut from 2" AR400 plate. Specifications AR400. AR400 is a specialty steel designed at the chemical level for improved wear resistance for very specific applications. AR400 = 400 brinell harness . T21 is a premium titanium-carbide wear plate that provides superior welding and forming characteristics without increasing the hardness of the steel. Which is stronger AR400 vs AR500?We have to tap AR400 a few times a year at work and we use carbide taps. Most AR400 manufacturers. This material is characterized by a smooth, dark scale finish with a hardened surface. Preheating Steel Video. Any how, keep up the good work. It's often used as wear strips, liners, and deflector plates. AR stands for Abrasion Resistant and will come in designations like AR400 or AR500 and usually offered as-rolled versus normalized (AR 200, 235 and 600 are also available). I'd cut the pieces with O/A or plasma, then rough the angled edge in with an endmill if possible, otherwise a 9" grinder aught to make quick work of it. ASTM A131 A&B / ABS A&B; ASTM A131 / ABS AH36 / ABS DH36 / ABS EH36; API 2H Grade 50;Carbon Steel 의 경우, 2. EdDanzer (Mechanical) 11 May 04 10:55. This may be necessary to avoid cracking of the weld metal or heat affected zone. Heating will remove the temper, we heat AR to soften it for drilling holes into it. 45mm and can be beyond 0. For certified companies, there must always be a certification standard stated (eg. RE: Qualifying ar400 steel to the D1. What base metals can be hardfaced? Carbon and low-alloy steels with carbon contents of less than 1 percent can be hardfaced. Looking for help welding AR400 steel. This wear plate offers excellent service for applications where formability, toughness, weldability and abrasion resistance are required. We are your Atlanta metal supplier for 304 stainless steel, 316 stainless steel, A36 carbon, 1018 carbon, AR400 carbon, 3003 aluminum or 6061 aluminum, 5052 aluminum, and more. Excavator Dipper Arm Weld Failure. 249 inch thick, aluminum and steel plate thicknesses start at 0. 25%; Manganese, 1. Sun Feb 14, 2016 7:01 pm A friend and I are thinking about building a couple of bullet traps. Durafix aluminum brazing rods. Holding the steel at or near stress-relievingAs hard and tough as our wear plate, Hardox ® pipes and tubes offer outstanding performance when you need both high abrasion resistance and a lighter product. In certain applications, you may weld dissimilar-strength materials to create components that will encounter high temperatures. 6, the design values of the material properties and coefficients for structural steel are: Modulus of. I used ER-70-S6 to weld it. Piece of 1-1/2" Thick AR400 Steel. Hard to say on wear, as our opperators can burn off a set of ski's off of a Cat 6040 bucket in 3 months that are 4 inch thick 12 inch wide that are hardox or AR500 grade. I am welding Ar400 in the floor of a dump truck that has a heated bed. Satisfactory machining and welding characteristics. 5%;. The cushioning quality of this base metal allows it to absorb impact. Knowing both the yield and tensile strength is important because they each have an impact on the production and use of steel (and many other materials, but we will focus on the steel). eplaeable eersible utting dgeAR400 steel is designed for abrasion and wear-resistant applications. 1, W47. Senior Member. 1:2020 contains the requirements for fabricating and erecting welded steel structures. 1 Preheat: Preheat means the minimum preheat temperature before welding. This means that AR is harder due to the additi. Chromium carbide overlay plate begins with a mild steel base. When welding dissimilar metals, you need to consider the final service condition that the weldment will encounter. Below are the 6 keys to successfully (no cracking) welding AR plate. From precision cutting to punching, bending and welding, we have the capabilities to transform metal into what you need. (Plus cutting charge) What has been the experience with these two choices? This is for pistol targets 20 inches by 20 inches or 42. Top. AR400 = AR400 Combines hardness and toughness with the opportunity for flame cutting, forming and welding. With an extra 50 HBW hardness over AR 400 grades, it provides additional wear resistance for an extended service life with similar toughness as an AR. AR400 plate is resistant to corrosion from atmospheric conditions and protects well against impact abrasion. This is a high-carbon alloy steel that is perfect for rugged applications that require high wear resistance. Alpharetta (Atlanta Plate Processing) 2005 Grassland Pkwy. Welding. Our "weld test" was merely to verify the preheat was high enough that the weld would break in the throat before a "chunk" would pull out of the base metal. What is AR400 Steel? The Tensalloy ™ AR400 wear-resistant steel plate is a steel that provides greater impact strength than our other common heat treated alloys. 187) & possibly 1/4" (. AR450 is. It has high electrical conductivity and less ductility. The base steel around the weld rapidly heats and cools during welding, resulting in a heat affected zone (HAZ) with high hardness. Public Auction: "Jeff's Welding and Machine" by Premier Machinery Auctions, LLC. With a Millermatic 180, you could do 3/16" (. This allowed for reliable performance both in the workshop and in operation. Heating will remove the temper, we heat AR to soften it for drilling holes into it. AR400, also known at Ford Steel as Wearalloy 400, is a high-carbon steel with a nominal hardness of 400 and a minimum hardness on the Brinell scale of 360 to 440. Summary. I plan on using 1/4 Ar500 plate but am unsure of the process needed to weld this type of steel. I'm sure I got a pc of AR-400 because it cracked, so I gouged it out preheated and rewelded it and had no problem after preheat. The “AR” in AR500 steel actually stands for Abrasion Resistant, while the number, in this case 500, indicates the Brinell Hardness Number (BHN) which falls within 460-544 for most AR500 steel. Since A36 is softer than Ar500, when welding the two plates together, A36 will start to wear off first. The steel plate is versatile, and it can be cut to fit tighter spaces. The vessel has two tangential inlet nozzles in the section of the vessel where the plate is located. You would want to use AR400 steel if your activities will need high wear resistance levels. ) are all quenched and tempered but through a higher alloy content, the plate can achieve a much higher hardness and strength. Our laser cutting machines use both fiber lasers and CO2 lasers and can cut through up to 4 inches of metal material. Adequate welding procedure. 3% carbon and 12-14% chromium. AISI 4330 alloy steel is preheated and post heated based on the welding procedure used for this alloy steel type, and the alloy can be joined by a brazing process. Here’s a. 75/pound for 400 and $1. for hardness and strength. 48" x 55-1/2" x 1/4" piece of AR400 Steel 18 Drawer Small Parts Organizer w/ Hardware Shown. Standard stock in abrasion resistant steel includes AR400 and AR500 . Welding = Excellent Wear Resistance = Great Excellent resistance to both impact and sliding abrasion at a moderate cost. Plates in Hardox ® 400 come in thicknesses from 2 to 130. Joined: Fri Jan 07, 2011 4:40 am. The milwaukee cobalt bits haven't needed resharpening but they're not cutting like they should. This product will last up to four times. 5 pounds. This specialized plate is designed for severe impact and abrasion applications. The base steel around the weld rapidly heats and cools during. Tweet. ) of around 0. Tweet. There were 8 of them 2-1/2" thick, and 8 more that were 1" thick. It has more hardness than the AR400 steel plate with good formability, good weldability, good ductility, good strength, and good impact resistance. The nickel and molybdenum content gives AR400 carbon steel the ability to resist wear better than all other carbon steel. 20: E70T-7, AWS A5. To ensure that the T1 steel weld is successful, preheating and post-heating are both essential components of the welding process. One of the main disadvantages of AR400 steel is its high level of brittleness. ) Hot Roll; Kromite® CD (4140 mod) Cold Drawn;For MIG welding use an argon 10 to 20% CO2 mix. In fact, Clifton Steel’s Clif-Clad chromium carbide overlay plating can withstand even severe. Welding. Primarily used in military applications, but also in areas where high strength is required as both grades have elevated yield strengths (HY 80 – 80ksi, HY 100 – 100ksi). If you're using AR400 I would think most people would have an adequate machine to run 1/16". 3 posts · Page 1 of 1. Call us at 800-321-8500 for a quote. Yes it can be done, drill your hole as large as the customer will allow, buy a good tap (OSG, Emuge, Guhring, Nachi), use a good tap lube (Moly-Dee ), and go sloooooUse a cut tap and not a form tap, because AR has a super high tensile strength. Download Now. Hot Rolled Steel Flat, is widely used for all general fabrication and repairs in industrial maintenance, agricultural implements, transportation equipment, etc. 035% Phosphorus. 9 & gr. BTW AR400 is similar to Hardox 400 etc. AR500 and AR600 will last longer and need to be replaced less often for projects that actually beat up the material. 1, Specification for Welding Procedure and Performance Qualification, and is identical to Annex IV, Base Metal Grouping, in the 2005 edition of that standard. Founded in 1919, the American Welding Society is a nonprofit organization with a global mission: to advance the science, technology, and application of welding and allied joining and cutting processes worldwide, including brazing, soldering, and thermal spraying. Since 99% of all AR isn't structural, just needs to be held on, the more "flexible", the more "mixing" in the weld zone the better. 1. Sometimes the amounts for certain elements can change depending on the thickness of the AR400 steel plate. What is manganese steel? Manganese steel, also called Hadfield steel or mangalloy, is a steel alloy containing 12-14% manganese. Using the conventional welding practices, like SMAW, SAW, and GMAW, MIL-A-46100 armor plate can be welded. That's in 3/8" I buy drops from a guy that fixes garbage trucks and bulldozer blades. This is for my workbench. 2. Structural rivet steel , ASTM A141; high-strength structural rivet steel, ASTM A195 . Cast steel is easier to weld, but the metal stretches when heated, which can lead to distortion and fractures. I ended up finding one about 80" long and 5/8" thick so I just cut it to length. The performance of the high manganese steel was compared to those of API 5 L pipeline steels commonly used in slurry transport, ASTM A1053 Gr. 2. Other AR steels are AR200, AR400 and AR500. . The AR400 steel plate is excellent for applications that weldability and formability are a must. Tensalloy™ AR500 steel is a grade of abrasion resistant steel plate that offers outstanding wear and impact resistance. Hard to to do but not. G 2T ® Ceramic Lined Pipe; Steel Round Bars. Once properly heat-treated, this bold alloy will. • High Tensile AR400 Skid Shoes • Lateral Float • Clearing width approx. Mild steel solid wires are usually plated with copper to prevent oxidation, aid in electrical conductivity and help increase the life of the welding contact tip. Originally posted by Sonora Iron View Post. Industries. And any advise you can offer on welding AR400. This will need to be completely rebuilt with AR400 or Wearox down the road and I will have to budget for it. This seems extremly high, but I never heard of AR 400 Steel. The hardened steel must be hard and strong enough to destroy the bullet upon impact completely. Fullmetal tv . Our "weld test" was merely to verify the preheat was high enough that the weld would break in the throat before a "chunk" would pull out of the base metal. Why is preheat sometimes required before welding? Preheating the steel to be welded slows the cooling rate in the weld area. Wear life is greater than conventional AR500 products, thereby reducing replacement frequency and resulting costs. (10) Spools of Alcotec "Almigweld ER4043" Spool Gun Spools. The most common metal you'll find on the competitors currently is AR400, a super strong steel alloy that can be easily acquired, but is a monster to machine or weld with out proper tools. Miller WC-115-A. AR400 | AR400F Steel Plate. Good weld-ability. 1-BMG:2005 1 Base Metal Grouping for Welding Procedure and Performance Qualification 1. 96” x 288”. A514 Steel. Do You Need AR400 or an AR500 Steel Plate? Choosing whether you need an AR400 or an AR500 wear resistant steel plate will depend on the application. 2 meters above the ground, with an anti-deformation angle of 1 to 1. AR400 or Wearox 100 for abrasion resistance. 2. Directions. There are plenty of folks welding AR400 with mig and since ar500 is very similar, I would think it would work as well as 7018 Ireland Comments for Mig on digger buckets. The target url is a free preview of the index of the Structural Welding Code — Steel, a comprehensive document that provides the requirements for designing, fabricating, and erecting welded steel structures. Industries. Typical uses of AR steel, which is classified. AR400 steel exhibits the best performance at low oxygen regardless of the velocity. e. Id love to see a comprehensive article on applications of different rods and wires for both steel and Alu. Alloy Steels. Request a Quote. AR400 STEEL is a high hardness, high strength quenched and tempered chrome-moly,. During the welding process, the base steel around the weld of AR400 steel plate is heated and cooled rapidly, forming a heat affected zone (HAZ) with high hardness. This wire is designed with 1% nickel and microalloying to produce welds with tougher weld joints. Compared to E70T-4, they offer slightly lower deposition rates of up to 30 pounds per hour, but they offer a smoother welding arc and Charpy impact toughness properties.