Often used in construction and mining applications, it can also be found in a variety of other industries. View Profile View Forum Posts Find Started Threads; WeldingWeb Foreman Join Date Dec 2006 Location Southern New Hampshire Posts 919 Post Thanks / Like. To ensure that the T1 steel weld is successful, preheating and post-heating are both essential components of the welding process. According to the Engineers that set our procedures. The difference in the thickness between the two methods can be quite significant. #3. Excellent resistance to both impact and sliding abrasion at a moderate cost. Why is Hydrogen a Concern in Welding? Welding Precautions for T-1 Steels. Where maximum AR400F is quenched and tempered through hardened wear resistant grades of abrasion resistant steel plate used for high impact and abrasion resistance. Excavator Bucket Rebuild Walk-Through. Additionally, mild steel is more ductile than AR400 steel, making it easier to work. Typical hardness range is 400/440BHN. Mild steel can also be welded more easily than AR400 steel, making it ideal for applications where welding is required. AR400 steel? Making some new KD's. Rhino-Tuf® EZ Drilling, Forming, and Welding; Ultima™ 601 Welding I. The right filler metal and proper preheating can help reduce crack sensitivity with AR plate. 5" thick and pinning the tip right to the body. Compared to 1055 carbon steel, 1065 is harder and more durable. This steel is often used in applications where formability and weldability. Any Quantity, Any Size, Delivered Anywhere!Steel Warehouse supplies AR450 steel plate, abrasion-resistant steel with surface hardness 420-470 hardness Brinell. It's often used as wear strips, liners, and deflector plates. Welding 1045 is recommending under the following conditions: The workpiece has been pre-heated to 200°C–300°C (392°F – 572°F); The temperature remains constant throughout the welding; The piece is cooled slowly with either sand. Rather than buy and weld adapters to the tooth body, I'm planning on flame cutting the body to the profile of the adapter then milling the end of the body to 1. While the inner surface provides exceptional abrasion resistance, the outer surface cools slower, remaining more ductile, with a hardness of 250 BHN. Norm right from Lincoln. If the weld will not be exposed to abrasion it is possible to weld with E70S-X or E71T-1M etc. AR400 F Steel Plate is formable grade of Abrasive Resistance Steel Plate designed to accommodate applications where a life of wear is the primary cause for failure among other grades of steel plate. Wear life is greater than conventional AR500 products, thereby reducing replacement frequency and resulting costs. The minimum coating thickness for zinc plating is 0. It will harden if heated beyond its transition temperature and then cools too quickly. Here at SendCutSend, we offer both AR400 and AR500 grades to suit any abrasion-resistant projects you may have. Reply. AR400; AR450; AR500; Manganese Steel; AR250; A514; Chocky Bars;. One of the main disadvantages of AR400 steel is its high level of brittleness. To help, below are. Likewise, plate steel varies in strengths from mild varieties to some very high-strength. It drills like mild steel afterwords. •. T1 tool steel welding can be difficult due to its high carbon content. 04% Sulfur. Preheating the steel, using low-hydrogen. While AR450 steel is similar to AR400 and AR500, there are some variances that make each unique. AR250 steel plates are made for improved formability with low levels of carbon and sulphur for inclusion shape control. ASTM A572 grade 50 steel is a low-alloy high-strength structural steel with a yield strength of 50 ksi (345 MPa) and a tensile strength of 65 ksi (450 MPa). AR400F is a through-hardened, abrasion-resistant plate with a nominal hardness of 400 HBW. As with other abrasion resistant steels, it does not have a defined chemistry, but rather, grade is determined based on. Can You Weld AR400 Steel. Welding = Excellent. Why is preheat sometimes required before welding? Preheating the steel to be welded slows the cooling rate in the weld area. If the weld is to be subjected to wear, it may be capped with a hard facing electrode having a low hydrogen type coating. Hardox ® 600 has a nominal hardness of 600 HBW and a uniquely high toughness for such a hard steel. 250) with beveling. There’s really no single specific chemical composition for AR400 steel, as long as it meets the required hardness level. AR400 abrasive resistance steel plate is intended Nm400 steel plate supplier for greater, impact, wear purposes the place chilly-bending and very good weldability is necessary. • Employ/Retain at least one Welding Engineer (Div. Applications: Abrasive / Erosive Wear Protection, Automotive / Vehicular, Chemical / Materials Processing, Marine, Wear Parts / Tooling. High Strength Steels. GENERAL DESCRIPTION AR400 is a quench and tempered steel and may be difficult to weld due its high strength and harden ability. ≤ 0. ASTM A572 contains 5 yield point grades: Grade 42, Grade 50, Grade 55, Grade 60 and Grade 65. . NITRONIC® 30 is an excellent grade to replace AR400 as an abrasion steel, abrasion corrosion resistant, abrasion stainless. While sheet metal gauges run from 0. Over 2” 200-250F. The material is through hardened, not surface hardened. This product will last up to four times. AR600 steel is a durable high-carbon alloy steel with excellent strength that’s supplied nationwide across our 40+ branches. Grades stocked: A514, AR400, AR500, A656-80, A572-50, A36, A588, 4140, 4340. The plan is to make a welding table from it and I have cut 8' off of the piece. And any advise you can offer on welding AR400. Similar to helium, CO 2 improves penetration when. To combat the high impact and wear, Clifton Steel recommends materials specifically designed for the impact and abrasion inherent in mining, construction and excavation. AWS D1. But it’s especially easy to weld. Hello everyone, I'm new to the forum, but not new to welding. Alro Steel stocks AR400F, a through-hardened abrasion resistant plate, designed to satisfy the demand for a grade of steel that can give prolonged service life where abrasion is. G 2T ® Ceramic Lined Pipe; Steel Round Bars. Renowned for its high impact strength and resistance to abrasion in its hardened state, the steel is often described as the ultimate work hardening steel. Even though it is very expensive steel I want the high impact and high abrasion resistance for my table. Too small of a grapple, and I will tear it apart. Easy. The need for preheat increases with steel thickness, weld restraint, the carbon/alloy content. The arc transfer is soft, letting it melt onto the puddle in a small to medium droplet mode. For example, your AR400 is approximately 200ksi TS . Miller 225 Thunderbolt (my first machine bought new 1980) Miller Digital Elite Titanium 9400. 4504x10-4 psi 1 MPa = 10 6 N/m 2 = 0. Figure 1: A plate’s grains run parallel to the rolling direction. The natural presence of manganese in the iron ore used by the Spartans is believed to be why their steel weapons were superior to those of their enemies – USGS. Its unique composition and treatment allow it to provide more surface hardness than AR400, while maintaining good ductility, formability, and impact resistance. These steels may also be welded to any of the steels listed in the latest edition of ANSI/AWS D1. Stick Welding- Creating High Quality Stick Welds. Joined May 4, 2006 Location northwest ARK. The base steel around the weld rapidly heats and cools during welding, resulting in a heat affected zone (HAZ) with high hardness. Another issue with 80CrV2 is that it comes heavily spheroidized (or, at least much of what has reached the knifemakers' market lately does), so in order to get good results you have to normalize and. e. welding process preheat temp. Used when in contact with machinery or construction; rocks, sand, coal, minerals, scrap metal, etc. Custom Steel Manufacturing, Inc. Induction hardened pipe is achieved by a unique heating/quenching process. AR400, or AR400F. This steel is also categorized as SAE-AISI 1080. AR400 steel is a high-carbon alloy steel that is specifically designed for abrasion and wear resistant applications. The Nickel-90 weld wire is formulated for welding AR400, AR500 ASTM A203 Gr A, and A352 Gr LC1 and LC2. Copper/Nickel 90-10 – C70600 Copper/Nickel 80-20 – C71000 Copper/Nickel 70-30 – C71500 Monel. This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. Care must be taken in order to avoid. AR400 | AR400F Steel Plate. ASTM A516 STEEL (GRADE 70) is similar to A515 but is intended for lower temperature applications. 1, Specification for Welding Procedure and Performance Qualification, and is identical to Annex IV, Base Metal Grouping, in the 2005 edition of that standard. 6. Would like some recommendations for welding AR400 and T-1 steel. Tensalloy™ AR500 steel is a grade of abrasion resistant steel plate that offers outstanding wear and impact resistance. jackal Titanium. Cutting. Hardness range of this formable wear material is 400-440 BHN. This allowed for reliable performance both in the workshop and in operation. Clif-Clad® chromium carbide overlay , Tensalloy™ AR400 and Tensalloy™. 48" x 55-1/2" x 1/4" piece of AR400 Steel 18 Drawer Small Parts Organizer w/ Hardware Shown. General Info About AR450 / AR450F. We have No Minimum Orders, We Cut to Size. The self-shielded E71T-14 wire has core materials which explode in the arc, volatizing the steel coating, minimizing cracking and porosity. This material is characterized by a smooth, dark scale finish with a hardened surface. 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. Therefore, AR400 will have a lower hardness than AR500 / AR500F. It can be then quenched rapidly. Innershield® NR®-305 from Lincoln Electric is designed for in-position, high deposition welding on carbon steel. 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. The production cost of AR400 Wear resistant steel plate is relatively high, which is much higher than that of simple low carbon steel such as A36 or 1018. AR400 = 400 brinell harness . I tested it with 75 rounds and broke out one of the deflector plates. Uses for this steel include the manufacture of heavy construction equipment. I've broke a couple 5/32 pilot drill bits and had to resharpen my dewalt black oxide bits every 2 or 3 holes now. Stick: If you Google TriCon Tri-Braze, it will bring up the data sheets on the chemistry composition and recommended welding proceedures. 5". Details. Years ago I was needing a new cutting edge. Place the sheet material 1 to 1. 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. Tap. Carbon steel grade equivalents table for American ASTM, ASME, and SAE to Europe, Germany, Italy, France, and Japan. The base steel around the weld rapidly heats and cools during. . Join Date: Mar 2005; Posts: 783; Share Tweet #2. The base steel around the weld rapidly heats and cools during welding, resulting in a heat affected zone (HAZ) with high hardness. AR200 and AR400 are both Abrasion Resistant steel plates. gas tungsten arc welding aluminum. When it comes to cost, Hardox is more expensive than AR400. Over ½ to 1” 50-150F. heat it up until a magnet is not attracted and quench in water. The base steel around the weld rapidly heats and cools during welding, resulting in a heat affected zone (HAZ) with high hardness. Conventional methods are used for welding AISI 4330 alloy steel. Hardox ® 600 has a nominal hardness of 600 HBW and a uniquely high toughness for such a hard steel. Storing and Redrying Electrodes. AR400F is quenched and tempered through hardened wear resistant grades of abrasion resistant steel plate used for high impact and abrasion resistance. When higher weld strengths are required, electrodes of the AWS. Below are the 6 keys to successfully (no cracking) welding AR plate. Manganese steel is a steel alloy containing 11-14% manganese. More Info. I am thinking of saving a little money and use A36 for my temporary repair. 91, ss - stainless steel, n. Long Fleetweld 37-RSP E6013 Stick Welding Electrodes (5 lb. Welding SAE 4130 Steel Tubing. 250” - 1”, widths 2” - 10” and lengths up to 20’. This can make it more. It weights 600 pounds and according to Jeff, it will cost $2,800 plus $200 for shipping to get one for my loader bucket. 3% Silicon. More Info. These elemental differences help the steel achieve a higher surface hardness. High Chromium Stainless Steel : 10J High Chromium, Molybdenum Stainless Steel : 10K. Popular grades of Hardox ® AR steel include AR400, AR450, AR500, AR550, AR600 and Hardox ® 500 Tuf, our latest grade at 475-505 HBW, combining the best properties of AR450 steel and AR500 steel for high hardness, high toughness and wear resistance, especially for extreme-duty. There is no way for a bullet to get to the first plate without sliding down one of the 10 degree plates. AR400: This steel provides a high degree of hardness and strength because of its quenched and tempered chrome-moly, boron treatment. Higher strength welding filler materials (having a maximum yield strength of 900 MPa (130 ksi) can be used for Hardox. Kromite® #3 and Mirraloy® TGP Welding Guidelines; Kromite® CD Hardness and Strength Comparison Chart; Close; Mirro-Krome 60® (I. Navsea Tech Pub T9074. If you are not able to find the grade of steel you are looking for, please contact us at 281-645-0177. Experiment with larger bottom dies, which would also probably require more metal on the part sticking up on your skids (so it can bridge the larger die). . Miller Spectrum 300. Hardox® 450 is an abrasion-resistant brand with a hardness of 450 bhn. Reply. This temperature shall be maintained while welding, unless a minimum interpass temperature is stated. 5 inch (63. A load of handbooks, design guidelines, apps, material data library, calculators and FAQs. The company formed and tacked everything and we just had to pour the wire to it. Adequate welding procedure. Our laser cutting machines use both fiber lasers and CO2 lasers and can cut through up to 4 inches of metal material. 4150 Steel Bar; Tensaweld Welding Wire. In certain applications, you may weld dissimilar-strength materials to create components that will encounter high temperatures. AR400 is quenched and tempered. The cladding process was performed using metal-matrix composite (MMC) powder belonging to the. At Ford Steel, we house a selection of AR steel hopper and chute liners from AR400 to AR500. The base steel around the weld rapidly heats and. AR400- better for impact applications, AR500- better for sliding applications. Jarring a piece of metal will allow for a slight realignment of the atoms - with. We offer Wear Resistance AR 400 Steel Plate . 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. Which is stronger AR400 vs AR500?We have to tap AR400 a few times a year at work and we use carbide taps. D2 steel has a hardness of 60-62 HRC when heat treated. 4140 steel properties. 17% to 0. It was a tumbler drum for some kind of abrasive cleaning system. A36 steel plate has good weldability and any welding method can be used. Rebuilding a backhoe bucket using AR400 steel on a Caterpillar 325 Excavator that was rebuilt from the ground up, including the sides, grouser bars and wear block . Just wanted to verify. Laser and Plasma Cutting. Kloeckner Metals is proud to offer weld. Advantages/Disadvantages. AR400 is formable, to some extent. Lists five chemical recipes and five different mechanical property ranges for plate products (grades 42, 50, 55, 60, and 65). Intended for moderate wear applications, common uses. Welding 1045 steel when it is through-, induction-, or flame-hardened, or when tempered, is not recommended. AR400 Flat Bar TruWEAR AR400 Flat Bar is a low alloy steel flat bar, heat treated to a nominal hardness of 400 HBW. Careful consideration should be given by competent welding engineers before stress relieving to weldments of this grade. We just finished doing something similar. It has a solid reputation as a highly versatile, abrasion-resistant steel that also has structural properties. Once properly heat-treated, this bold alloy will. So if you are in that range you will match the ajacent AR plate. 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. Hence a hammer test was recommended by the plate manufacturer. Summary – Machinability Rate 40-80%. welding 4145 steel welding ar400 steel g s welding aws e309l 16 rods welding falcon welding china on site welding dalian welding qiangli welding china sky welding american eagle welding china welding giotek welding 16 gauge steel welding 4140 to mild steel rx welding rw welding. The highest deposition rate gas-shielded flux-cored wire is E70T-1. #1. Otto Nobedder; Weldmonger; Posts: 8429. The tensile strength of A514 alloy steel is specified as at least 100 ksi (689 MPa) up to a 2. I have quite a bit of 3" angle that is 3/8" thick that I will use for the majority of the frame. If it seems to jerk around too much, set your max high speed to a slower value like maybe 100 ipm as this affects how fast the machine loops around when the tool is out of the cut. 250) with beveling. Strip down and drench yourself in used motor oil. (10) Spools of Alcotec "Almigweld ER4043" Spool Gun Spools. EdDanzer (Mechanical) 11 May 04 10:55. Quenching occurs by bringing the steel to a high temperate, between 1,500 and 1,650F, then is. • High Tensile AR400 Skid Shoes • Lateral Float • Clearing width approx. Stick: If you Google TriCon Tri-Braze, it will bring up the data sheets on the chemistry composition and recommended welding proceedures. 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. Search About Contact FAQ +86-371-86151827 [email protected]Share. Clifton Steel is the leading supplier of AR400, AR500, A514, Manganese Steel, and Armor Plate. 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. Easy. 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. Easy-to-Weld A572 Alloy Steel Sheets and Bars. a. 96” x 360”. It's often used as wear strips, liners, and deflector plates. It is determined based on hardness and it does not have a defined chemistry. 5 degrees and a butt gap of approximately 2mm. However, one disadvantage is malleability. A588 steel is a structural steel. Slight preheat can help but does contribute to the peak temperature achieved during welding. AR400 Steel Welding on a Backhoe Bucket. Hi Dan, AR400 is approximately 44Rc . Welding = Excellent. You would want to use AR400 steel if your activities will need high wear resistance levels. A little history and background on 4140 Steel in relation to other mild and carbon steels in the industry. General Info About AR450 / AR450F. The milwaukee cobalt bits haven't needed resharpening but they're not cutting like they should. 1-BMG:2005 1 Base Metal Grouping for Welding Procedure and Performance Qualification 1. Feedrate about . 96” x 480”. The ones on it now are plain A36 steel in 1/2" X 7. The most common shielding gas combination is 75% argon and 25% carbon dioxide. and 250 BHN O. 48″, 60″, 96″, 120″. This specific steel has good formability, weldability, and notch toughness when in the as-rolled condition. Ar500 Price Per Square Foot is USD 2. Grade 70 has the highest tensile strength of them all, between 485 – 625 MPa. NITRONIC® 30 is an excellent grade to replace AR400 as an abrasion steel, abrasion corrosion resistant, abrasion stainless. ). 3 – Structural Welding Code – Sheet Steel AWS D1. AR500 is a high-strength, low-alloy steel that offers great weldability, formability, and toughness. Depending on the grade this may vary by 25-50 ºF. CO2, the weld has more ductility, more elongation, in almost all cases better charpy V notch tests. Hardox® wear plate for extreme abrasion resistance. AR 400F / AR 400 F / AR400. jpg. INEFIL ER70S-6 . 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. For example : Lincoln 's Lincore 55, Lincore 50 , Lincore15CrMn are all Rc-50 . Id love to see a comprehensive article on applications of different rods and wires for both steel and Alu. Available in thicknesses from 0. Repair steel hydraulic line Heavy Equipment Forums. We run the taps straight in at 50-60 and back them out using a tapping head on a drill. In most cases you would preheat Q&T plates ( due to its hardenability tendancy ), expecially when you get into the higher harness. A572 steel is a high strength low alloy structural steel known for its versatility. AR400 = AR400 Combines hardness and toughness with the opportunity for flame cutting, forming and welding. They're easier to weld and more scratch resistant than zinc-galvanized steel sheets. AR400 Steel Plate AR400 Steel Plate – Hardness 360-444 Brinell. ) of around 0. (Stick welding is preferred simply because of the tendency of the semi-automatic process to apply too great of a deposit. The nickel and molybdenum content gives AR400 carbon steel the ability to resist wear better than all other carbon steel. The table cross-references the most widespread steel alloys in accordance with DIN, ISO, AISI, SAE, AFNOR, BS, UNE, SS, UNI and JIS standards. 3. Likes 1. AR400 is a quench and tempered steel and may be difficult to weld due its high strength and hardenability. Our wire products have been formulated to be compatible with our premier metals, AR400, AR500, A514, Manganese Steel. General Info About AR450 / AR450F. Any advice on welding AR400 Steel and T1 Steel with my mig welder ? Thanks Last edited by ces64; 03-26-2007 at 07:30 PM. 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. AR400 plate is suitable for welding. Too tight of a radius bend will tend to crack it on the outside of the radius, though. W59, W59. been asked many times if it's possible for someone to drill a hole in their AR500 steel targets and I've always had to. Alpharetta (Atlanta Plate Processing) 2005 Grassland Pkwy. Custom sizes available. Gun Weld Packs. To be classified as AR500, the hardness needs to clock in between 477 BHN and 550 BHN. Preheat, interpass temps, etc. The base steel around the weld rapidly heats and cools during welding, resulting in a heat affected zone (HAZ) with high hardness. These Q&T plates are generally used for abrasion resistance. 4. WELDING AR400 & AR450 have excellent weldability that customers rave about and can be welded. I haven't bent one yet in spite of my best efforts. 1045 Steel Round Bars; 4150 Steel Bar; Tensaweld Welding. Hardox is not an alloy of steel but a company in Sweden that makes a high quality AR plate. AR400F is supplied in the quenched and tempered or as-quenched condition. dam w/clay around each hole to be drilled to keep fluid in. 1, Structural Welding Code—Steel. I have a store bought root rake for my skid steer with AR400 tines. It's often used as wear strips, liners, and deflector plates. For example, let's calculate the weight in steel of a bar with length 1 meter and diameter of 20 mm. eplaeable eersible utting dgeAR400 steel is designed for abrasion and wear-resistant applications. AR500 — Understanding Abrasion-Resistant Steel. The nickel and molybdenum content gives AR400 carbon steel the ability to resist wear better than all other carbon steel. Gas-shielded Flux-cored Wire. 1 and W59. Find a knowledgeable welder to reattach the new tines. 46100 Armor Plate. Steel Warehouse supplies ASTM A514 steel (also known as T1) grades A, B, E, F, H, P, Q & S. 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. SSAB’s ASTM A656 Grade 80 steel plate is a formable, high-strength, low-alloy hot-rolled material that has been developed for applications where increased strength-to-weight ratios are required. ASTM A514 steel plate is quenched and tempered carbon-alloy steel great for use in welded bridges and structures. Find a knowledgeable welder to reattach the new tines. Re: AR400 for welding table? I wanted it for my table. AR450 is. 6, the design values of the material properties and coefficients for structural steel are: Modulus of. 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. Adequate welding procedure. The hardness and general flexibility of AR400 steel plates give them versatility. I guess depends on what he means as "better". 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. for hardness and strength. Thanks to its high toughness, good bendability and weldability, this steel can be used in structures with moderate wear. Experiment with larger bottom dies, which would also probably require more metal on the part sticking up on your skids (so it can bridge the larger die). we set 30 volts with . The sides will cost an additional ~$50, so the entire project will cost $200 plus supplies. 249 inch thick, aluminum and steel plate thicknesses start at 0. 5 mm) thick plate, and at least 110 ksi (758. AR Plate (trade names such as:"Algoma 500 , AR500, Hardox, etc. 15% and below creates ductile steel with unbreakable chips. It’s also best to be methodical about weld sequencing, which will also. Kind Regds. Learn more about A36 steel properties now. Provisions for the design of these combination joints can be found in existing specifications, but the design rules. 1mm. TriCon TriBraze, the Sequel. Ultra-Wear-Resistant AR500 Carbon Steel. I ended up finding one about 80" long and 5/8" thick so I just cut it to length. 02-13-2007, 06:26 PM. 1. T21 has a wear life twice that of AR400. If you are looking to weld AR400 steel, you will need a welding torch and a welding machine. e. Determining the strain-hardening exponent (n) requires converting this equation to logarithmic form: log (σ) = log (K) + n*log (ɛ) (eq. About 5/8 x 2 tines. 68. Remington Electric. The base steel around the weld rapidly heats and cools during welding, resulting in a heat affected zone (HAZ) with high hardness. The nickel and molybdenum content gives AR400 carbon steel the ability to resist wear better than all other carbon steel. It is a silicon killed, coarse grained steel that requires careful welding techniques. 1 Preheat: Preheat means the minimum preheat temperature before welding. 3) can be welded with all classical processes: manual, semi-automatic under gas protection, automatic under flux. AR400 steel exhibits the best performance at low oxygen regardless of the velocity. Typical hardness range is 385/425 BHN. 96” x 288”.