For example, when a component with high residual stresses is machined, the material tends to move during the metal removal operation as the stresses are redistributed. US $700-1500 / Ton. D. As you’re drilling, be sure to use plenty of coolant to keep the drill bit from overheating. 25%; Manganese, 1. 1. • Use internal coolant supply when machining austenitic stainless steel. They contain carbon as the significant alloying element. Often used in construction and mining applications, it can also be found in a variety of other industries. Any Quantity, Any Size, Delivered Anywhere. Apex EZ Sander 37" Single Head Wide Belt Sander, EZ3760MInv. Manganese steel is also considered to be an extremely hard material to. In addition to its general characteristics of being formable, while maintaining good abrasion resistance, AR400 steel also has the following. 22 0. Complete Ameralloy Catalog. This material is heat treated and commonly used for screens. 4-1%, the machinability rate gradually decreases. Learn More . Yield strength, which would control the amount of bend before a permanent set, isn't one of the controlled properties. In my hands on experience with AR400, joints that are free to move/contract are one of the best methods for reducing cracking during welding. Rockland constructs various quality products with high-grade steel. values of hardness are compiled and shown in Table 2. This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. hardened surfaces, Ultima 601 becomes the ideal abrasion resistant product that can handle the rigors of extreme maintenance problems. Jarring a piece of metal will allow for a slight realignment of the atoms - with each sharp impact in the same direction, the object becomes slightly more magnetized. 5 mm) thick plate, and at least 110 ksi (758. Request a Quote. Properties of AR400 Steel Plate. 0005″ thick with a hardness of approximately HRc 70. The highest deposition rate gas-shielded flux-cored wire is E70T-1. Quote. This steel is normally used for additives concerned with extreme put-on. 20. 400 – 500) within the names of the different steels refer to the Brinell Hardness Number (BHN) – the material’s level of hardness. AR400 Welding & Machining |. While not a good candidate for forming and machining, AR400 plate is suitable for welding. The only AR plate that I've personally worked with AR plate for steel rifle targets. Branches featuring 4140 Steel Plate products. Source new and latest Ar400 Steel Plate products in 2023 from credible China manufacturers, suppliers and factories. M. Taking the Difficulty Out of Working with Abrasion Resistant Steel for Auger FlightMonday, August 15, 2016. Choose from our selection of grade AR400 steel in a wide range of styles and sizes. Why countersink A Screw? A countersink screw, like a flat head socket cap screw for example, has a taper that is largest at the head, with its size reducing gradually until it reaches the threaded shaft of the screw. It's on an already built unit so I can't substitute another steel. What causes magnetism on steel bars & plate? Phone: 800. View Profile View Forum Posts Private Message Visit Homepage View Gallery Uploads Member Join Date Jul 2005 Location USA Posts 2415 Downloads 0. Easier to machine without cracking than other impact-resistant ductile cast iron bars, these. 5 amps. West Wind Hardwood is your one-stop source for lumber and value added milling services. We work mostly with light-gauge cold-rolled steel, hot-rolled steel, aluminum sheet, and occasionally stainless. WELDING I have milled alot of aluminum and some steel mild steel but nothing like this on a CNC. 001-. Wear Resistance = Great. 5" wide x 20" long 1" thick AR-400 plates that need a centered slot cut completely through them 3. steels or regular D2 tool steel? Thanks in advance, Robert. For example, your AR400 is approximately 200ksi TS . AR400 is not an ASTM spec and the material composition varies greatly between manufacturers. 9300. Will it cut the same as 3/8 mild steel? Sorry if the question seems stupid but never cut hardened steel before. AR400 is a type of steel plate. AR400 vs. 0 tons. We’ve moved from a 1970s-vintage turret punch to a state-of-the-art punch/laser machine for our flat blank processing. Largest selection of AR400F steel plates at wholesale prices. Quenching & Tempering. Wholesale Price Nm450 Nm500 Wear-Resistant Steel Plate 8mm 10mm Thick Ar500 Plate Armor Ar400. The main results are the cutting speed and feedrate, secondary results such as power consumption and operation time, and carbide grade recommendations. Details. LocationCentral Texas. Welding. dam w/clay around each hole to be drilled to keep fluid in. Mangalloy is a unique non-magnetic steel with extreme anti-wear properties. 5%;. 006 high strength steels high strength steel - wrought & tool steel 175-400 75-150 . • Use internal coolant supply when machining austenitic stainless steel. Context 2. Excellent resistance to both impact and sliding abrasion at a moderate cost. hot rolled ar400 steel plate price. Contact Us. Description: Jergens Ball Lock® Standard Subplates are equipped with (4) 20mm Ball Lock® Face Mount Receiver Bushings for use with 14" x 14" (350mm x 350mm) or 16"x16" ( 400 mm x 400 mm) fixture plates. For AR 500 it is $1. Call us at 800-321-8500 for questions or comments. Alpharetta, Georgia 30004. 1/4” AR400. 0 amps on the VFD drive. This material is characterized by a smooth, dark scale finish with a hardened surface. Ultra-Machinable 12L14 Carbon Steel Bars. It is important to choose the Ar400 Plate Supplier wisely- who will use. A36 steel plate is considered a low carbon, or mild, steel, meaning it contains a carbon composition of between 0. 006 stainless steel - 400 series free machining 135-275 250-500 . Alpharetta (Atlanta Plate Processing) 2005 Grassland Pkwy. It is manufactured for many applications: mining equipment and machinery, equipment in steel mill, agricultural machinery and cement plant equipment, ,. sfm 200, . 500 also has a higher hardness. Thick AR400 plates are harder, and more force is required when cutting. 8-0. W. AHL supplies Wear Resistant Steel Plate of high strength, hardness, abrasion resistant in sizes from 8-100mm thick in HARDOX 400,450,500. Wear plates and abrasion resistant steels made from these materials are typically up to 5x harder than standard S275 structural grade steel and are often used in industries that require extremely tough equipment such as aggregate and waste processing or. 5%; Phosphorus. Products. The normalizing process is designed to relieve stresses, which results in improved ductility and toughness. Improved forming and weding capabilities. Welding AR400 steel also requires some expertise, as the steel is prone to cracking and warping if not soldered. Both AR360 and AR400 have a minimum brinell of 360. 0 /5 · 65 reviews ·Hi, Has anyone successfully stamped AR400 steel? If so did you use P. Accord Metal Fabricators is Victoria's #1 for structural steel and other steel metal fabrication projects. Our selection of high quality machinery provides you with an easy and convenient way. Kloeckner offers A5656 in four different grades, including 50, 60, 70, and 80, and in three chemical requirements, type 3, type 7, and type 8. Some attachment manufacturers use A514 in. The resistance in heat and hardness allows the tool to run about 20-30% higher machining speeds than uncoated end mills. These bucket bosses are 2-1/2" thick AR400, and have M12-1. AR400; AR450; AR500; Manganese Steel; AR250; A514; Chocky Bars; 4150 Steel Bar; Scrap & Recycling. 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. ; Our team provides value added metals processing to help you reduce lead times. AR400 is a very hard abrasion resistant steel used for rock truck beds and other high wear items. AR400 is “thru-hardened”, abrasion resistant, alloy wear plate. If your activities call for high wear resistance levels, you should choose AR400 steel. About Us. Easy Speeds And Feeds only serves as a starting point and educational site. Learn More. This reduces thermal conductivity in the end mill and, instead, transfers the heat to the cutting. HANKEV is the leading supplier of HADFIELD GRADE MANGANESE STEEL as well as 11-14% Manganese Steel (ASTM A128) impact-resistant steel, AR400, AR450, AR500 wear-resistant steel, Military grade Armor 46100, 12560 and A514, A572 steel all over the world. Alpharetta, Georgia 30004. Plates in Hardox ® 400 come in thicknesses from 2 to 130. 21 0. 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. The Brinell Hardness number differentiates the abrasion resistant steel grades. Referring to the hardness properties, AR500 recorded the highest hardness at 47. AR 400 plate. 01 from first to avoid shanking out. Welding A588 Steels. These Q&T plates are generally used for abrasion resistance. However, this comes at a cost—AR400 steel tends to be much more expensive than mild steel. AR200 steel is a medium-carbon manganese steel with moderate hardness that's supplied nationwide across our 40+ branches. . Alpharetta, Georgia 30004. AR400 Steel Plate AR400 Steel Plate – Hardness 360-444 Brinell. 0 amps on the VFD drive. At Lange Grinding, we have worked with steel meels for decades,. AR Medium steel plate grades – which include AR200 and AR235 – have a surface hardness of 180-260 BHN. Design offers abrasion resistant double bottom and full curve side wear pads. 321. Similar to the annealing process, the steel is. I don't do much machining on anything but aluminum, delrin, and the occasional mild steel or brass so I'm not too up on hard machining. By continuing to browse this site you agree to our use of cookies. Commonly formed with overlay to the inside; 2. comChromium carbide overlay plate begins with a mild steel base. Posted April 20, 2007. The ballistic limit for all the mild steel targets has also been obtained numerically. dozer blade root rake, 120" wide, 1550 lbs AR400 steel NEW, USA Attachments. Machine slot using a trochoidal type path in 2 passes at about . Generally speaking steel mills name their AR plate as follows. SAE J2340. 5. While not a great candidate for forming and machining, AR400 plate is suitable for welding. AR400 Flat Bars. Re: How to identify AR-400 mixed with mild plate? There are portable hardness testers such as a Shore Scleroscope and there are portable analyzers such as a Niton gun. Kloeckner Metals routinely stocks A36 steel plate in coil, CTL, HR, and discrete formats. When deciding between the two steels, take into consideration the end application and the quantity that you will need. It's on an already built unit so I can't substitute another steel. INDUCTION HARDENED CHROME PLATED. You can cut AR500 steel using a plasma cutter and a properly tuned table. Kromite® #3 and Mirraloy® TGP Machining Guidelines;machining conditions. AR500 | AR500F Steel Plate. Steel Machining Stainless Steel Components Stainless Steel Bar Stock. Service Temperature is 400°F. 001 fpt, kennametal harvi 4 flute . Primarily used for abrasion resistance to coal, gravel and other substrates. AR360 / AR400. Description: Jergens Ball Lock® Standard Subplates are equipped with (4) 20mm Ball Lock® Face Mount Receiver Bushings for use with 14" x 14" (350mm x 350mm) or 16"x16" ( 400 mm x 400 mm) fixture plates. Metal and alloy plates and plate stock are used in a variety of applications such as raw material feed for machining or forming of parts, flooring or floor fabrication, and. Those are malleable and brittle. The material is very resistant to abrasion and will achieve up to three times its surface hardness during conditions of impact, without any increase in brittleness which is usually associated with hardness. One of our most popular products is stainless angles. Good luck Matt As a result, customers can expect longer-lasting wear parts in some of the toughest applications. 003-. Adjusting feed rate to about 3. com to request a quote or price for your steel plate rolling. 0 amps is almost 700 watts, so about max hp on this machine !!!! Anyway, stalled the drive a couple of times at 3. According to the charts, cutting speed of T1 is approximately 40% that of 1212, or 65 surface feet per minute. com. Welding Rusty, Dirty Steel. Meanwhile AR500 / AR500F is not formable, but shows good machinability. [2] This allows mangalloy to retain its toughness . 5″) Ability to “Work Harden” from 470 BHN to 560 BHN. The strength of the 2" AR400 is a fair bump up from T-1. AR500F. Mild steel center with an AR400 ring shrunk on. AR400 steel is a high-carbon alloy designed explicitly for abrasion and wear. AR400 is a quench and tempered steel and may be difficult to weld due its high strength and hardenability. Mild Steel Sheet Black AR400 is a flat shaped sheet of AR400 Black Mild Steel. Resistance Welding Electrodes. The main results are the cutting speed and feedrate, secondary results such as power consumption and operation time, and carbide grade recommendations. Wear Resistance = Great. . Abrasion resistant steel is created by quenching and tempering forged steel plates. Mostly due to the heavy hone or land at the cutting edge necessary to survive . Ar400 Plate is usually tempered and quenched using ingots or steel blocks. Maintaining more than a . The nickel and molybdenum content gives AR400 carbon steel the ability to resist wear better than all other carbon steel. What Is Ar400 Steel ?. Workpiece Material Brinell Hardness (BHN) Morse List No. I have a 4. 06 0. AR400 Steel Plate – Tensalloy AR400 Armor Plate | Clifton ar400 nm400 sizzling rolled abrasion resistant metal plateThe Tensalloy AR400 wear-resistant metal plate offers larger influence energy than other frequent warmth-treated alloys. 7 times that of abrasion-resistant reference AR400 steel. Machining AR400 steel plate. Will take about 5 hours overall. Our knowledge can make the difference between a successful machine and a costly one. 2. (Sorry for the dirty window). Welding Tensalloy™ has excellent weldability and can be welded with. 0. Thread Tools. Hardness range is 360/440 BHN with a nominal hardness of 400 BHN. WeldingAdvanced Integrated Technologies - Densities Chart For Machining Materials | A-I-T. ASTM A514. Abrasion resistant steel is created by quenching and tempering forged steel plates. AR400 Flat Bars; ASTM A514; ASTM A829 AISI 4130/AISI 4140; Marine & Offshore Steel Plate. We offer Wear Resistance steel plate , HARDOX 400 ( Sweden ) , ABREX 400 ( JAPAN ), NM 400 ( CHINA ), is a high-strength wear resistant steel plate with high hardness. Oct 21, 2021 #8 52 Ford said: Heres something talking about welding AR400. These steels must be heat treated to develop their characteristic properties. Hardox ® 450 consistently outperforms mild steel, whether it’s S235, S355, A36, grade 50, A514, SS400, S45C or any AR 400 grade. Now answer the question. 2% manganese. Alloying the MMC matrix with chromium increased. 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. Torchhead. Keep the “torch-to-work. 75" can be cold bent to minimum inside bend radius of 3t (where t is the plate thickness) with the bend axis transverse to the rolling direction. (AR400) Wear Plate; Rhino-Tuf® EZ (AR400) Wear Bars;. Excavator Rakes. Material: Steel, Other. Machining process can be performed in the annealed or normalized and tempered conditions. Clamp the steel in place if necessary. I may have a job coming up where we will need to drill a hundred or so steel plates. The names of AR plate products typically indicate the hardness of the material. Final surface layers obtained from the MMC powders had abrasive wear resistance up to 5. The softer condition is used where considerable machining may be required, or where more ductility is required. Mar 13, 2023 / Welding 1/4in AR400 to Mild steel #5. heavier gage steel may require high capacity sophisticated equipment that has built-in protections for the machine operator. The high-carbon alloy steel grades are determined on the hardness of the steel. 10-31-2006, 12:. AR400 Wear Plate; AR400 Wear Bar & Strips; AR500 Flats & Rectangles; AR500 Wear Plate; Metric Steel; Threaded Rod; Chrome Shafts. Dec 2007. 5" wide x 20" long 1" thick AR-400 plates that need a centered slot cut completely through them 3. Differentiators include hardness levels, application uses, and cost. 001-. Branches featuring A514 Steel Plate products. Quenching occurs by bringing the steel to a high temperate, between 1,500 and 1,650F, then is. Welding. Chat now. 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. A514 AR400 abrasion resistant steel plate is a good candidate for some processing techniques. 따라서 바위, 모래, 석탄, 광물의 적재시 주는 충격이나 미끄러지면서 가해지는. AR400 steel can be machined and welded but requires some special considerations. This avoids having to machine the holes as you are having to do. It features good abrasion resistance and is. The nickel and molybdenum content gives AR400 carbon steel the ability to resist wear better than all other. With a hardness range between 477 – 550 BHN, AR500 is known for its toughness and excellent wear resistance, along with exceptional fatigue and corrosion resistance. Disclaimer: I haven't done AR500, just AR400. On the Brinell Hardness Scale, the product. I made one from mild steel. Product Representatives. Produced to minimum Brinell hardness requirements. The nickel and molybdenum content gives AR400 carbon steel the ability to resist wear better than all other carbon steel. Machining. S. I don't do much machining on anything but aluminum, delrin, and the occasional mild steel or brass so I'm not too up on hard machining. We. Whereas 400 can be between 360 and 440 Brinell, 500 is between 477 and 550. The base steel around the weld rapidly heats and cools during welding, resulting in a heat affected zone (HAZ) with high hardness. Recommended for: liners for mining and material handling equipment like dump trucks, material transfer chutes, storage bins, buckets, and hopper. Hardox ® 400 is a trusted steel in the Hardox ® wear plate family, with a heritage of hardness and toughness going all the way back to 1974, when Hardox ® was launched as the world’s first bendable wear steel. I don't do much machining on anything but aluminum, delrin, and the occasional mild steel or brass so I'm not too up on hard machining. 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. Shop for AR400F Steel Plate online at America's Metal Superstore. To avoid having to run another drill through to bring the hole to size use an oversize drill such as 57/64 or maybe even 17/32. Contact a Clifton Steel Representative today for details. It is important to choose the Ar400 Plate Supplier wisely- who will use high quality raw material and advanced technologies in the production process and offer the products at a competitive price. This helps to increase the steel’s strength and hardness. Intended for moderate wear applications, common uses include contact. ; Louisville has consignment programs offered for. The nickel and molybdenum content gives AR400 carbon steel the ability to resist wear better than all other carbon. The idea is a standard pair of bolt cutters modified with a pair of titanium solid bar handles (with a pry bar on one of the handles). need a little help feeds/speeds in ar400. AR400F is a through-hardened, abrasion-resistant plate with a nominal hardness of 400 HBW. Thick AR400 plates are harder, and more force is required when cutting. (3. # 7394Norman Machine Tool, Ltd. 0625" wide by half inch deep. 13 0. 25) which gives improved machining, while retaining its forming and welding properties. AR400, or AR400F steel, is a high. Quenching occurs by bringing the steel to a high temperate, between 1,500 and 1,650F, then is. High Strength Steels. Due to its high hardness, the steel is. Joined May 4, 2006 Location northwest ARK. 12mm AR500 Exporting Wear Abrasion Resistant Steel Plate. ar 500 xar 500 xar500 nm500 nm 500 ar500 abrasion resistant steel plate. 02 inch diameter holes for vacuum molds; 1. 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. AR400 is formable, to some extent. , U. The Calculator divides the results into 3 sections. The base steel around the weld rapidly heats and cools during welding, resulting in a heat affected zone (HAZ) with high hardness. Grades Stocked: A514, AR400, AR500, AR200, A572-50, A656-80, A710 Chicago specializes in large precision burned and beveled parts. 16:14. Contact. When it comes to cutting AR500 steel, you should be ready to learn certain factors. Grade 70 has the highest tensile strength of them all, between 485 – 625 MPa. 04 0. In this condition, most of the alloy content exists as alloy carbides, dispersed throughout a soft matrix. It offers a wide array of benefits to be used in many industries. D. High Strength Steels. The number in the material name (e. These plates have good corrosion resistance properties but are difficult to machine and bend. Owen joins me again this episode to try to poke some holes in a 5/16" plate of AR400 steel. Tool steels are usually supplied in the annealed condition, around 200/250 Brinell (about 20 HRC), to facilitate machining. Similar to the annealing process, the steel is heated to a temperature just beyond the critical point (again, the AC3 line) and held for a set period of time. XAR400, XAR450, XAR500, XAR600 are 4 mainstream steel grades for wear resistant steel as Germany standard, XAR-extra abrasion resistant steel is also very popular around the world. The numbers (i. Find Metal Plates and Plate Stock on GlobalSpec by specifications. Miyachi Unitek Welder. Due to its high hardness, the steel is difficult to cut and shape and requires high-speed tools and cutting fluids. Alro’s on hand inventory is unmatched in the industry in both variety and quantity. (35amps) I am planning on cutting 3/8 ar400 with it. That’s why it is used in wheel covers, electrical enclosures, and general steel. Alro stocks metals, industrial supplies and plastics. We have seen foreign-made steel wear plate sold as AR400; test at 302 BHN hardness! Did the customer get what they paid for? No way. Weldability of Free Machining Grades of Steel. This allowed for reliable performance both in the workshop and in operation. Bending = Good. AR400, or AR400F steel, is a high-carbon. Uses for this steel include the manufacture of heavy construction equipment. Titanium offers superior wear resistance, while stainless steel is more. The cushioning quality of this base metal allows it to absorb impact. Wearalloy 400 and 450 can be cold formed in a press brake or rolls. Forming. This article is the last of a series of publications included in the MDPI special edition entitled “Innovative Technologies and Materials for the Production of Mechanical, Thermal and Corrosion Wear-Resistant Surface Layers and Coatings”. Benefit of using dual phase stainless is maximized at high oxygen and low velocity. AR450 steel is a high-carbon steel alloy that has a surface hardness between 400-477 BHN. AR400 Steel Plate – Tensalloy AR400 Armor Plate . The chrome plate is a minimum of . ) Hot Roll; Kromite® CD (4140 mod) Cold Drawn;Mild Steel Plate Black AR400 is a flat shaped plate of AR400 Black Mild Steel. -Grind off anything that's feasible. $4,408. Abrasion resistant (AR) steel plate grades offer enhanced hardness for wear-resistant applications. This is a high-carbon alloy steel that is perfect for rugged applications that require high wear resistance. You're not going to have any luck at all drilling through the flame cut edge with HSS tooling. Hardox 400. Shop 24/7 with Alro. Now answer the question. With better heat and wear resistance than high-speed steel, these cobalt steel end mills can run at higher speeds and provide better performance on hard material, such as iron, hardened steel, titanium, and tool steel. 75″ can be cold bent to minimum inside bend radius of 1. Slight preheat can help but does contribute to the peak temperature achieved during welding. starbolinSuggested inside Radii for 90 degree bends for various thicknesses expressed in terms of “t” where t = material thickness. AR450 is not recommended for machining, but is formable. 5425 N Whitaker Road. 75 inch. 2m, the theoretical width of the bottom die opening should be 8 times the thickness, which is 32mm. 5" wide x 20" long 1" thick AR-400 plates that need a centered slot cut completely through them 3. 321. Different grades and types of bolts, and I would guess the structural steel erectors are more likely to properly, fully torque a bolted connection than any typical machine/mechanical application, unless specifically controlled. ASTM A829 AISI 4130/AISI 4140. Mir50® Machining Guidelines; Close; ASC2250® LDX. For example, some manufacturers, like Rogue Shooting Targets, use AR500 Steel and others use milder AR400 and other milder steel versions. 05% to 0. Choose Steel Warehouse as your industrial steel processor & steel sheet, coil & plate supplier to solve your most challenging steel supply problems. This materials is an Abrasion Resistant, Thru-Hardened, Alloy product. Additionally, there are much different load considerations. 5-inch pitch hinged steel belt to suit the application; Design employs a unique dual, stacked belt arrangement at the lower curve, through the incline and at the chip discharge; Single drive running both. Abrasion resistant steel fends off wear and tear better than almost any material, making it especially ideal for auger flighting. J. With a wide range of sizes and thicknesses available, Steel Warehouse can provide. The welds and joints will be high quality. Manganese steel is a steel alloy containing 11-14% manganese. Still, this is a typical chemical composition for AR400 steel: Carbon, 0. You can judge a good anvil by the amount of rebound of a large steel bearing ball. Contact most popular products of manufacturers, trading companies, wholesalers & exporter directly on Made-in-China. Hello everyone, I'm new to the forum, but not new to welding. This helps to increase the steel’s strength and hardness. A514 Steel Plate: Low carbon and sulfur levels, strong, and easily machinable. Drilling machining alloy AR 400 AR600 AR500 AR450 AR400 wear resistant steel plate 4x8 price per ton AR400 flat bar cost $650. Well, on the Brinell scale – which measures the hardness of steel, with the higher the number meaning the harder it is – mild carbon (130-160BHN) and stainless steel (160-200BHN) are relatively similar. It’s often referred to as Hadfield steel, or Hadfield grade, as Sir Robert Hadfield discovered it in. CLIFTON STEEL COMPANY 16500 ROCKSIDE ROAD, MAPLE HEIGHTS, OH 44137. AR235 / AR200 / AR Medium. The Carbon content of AR400 steel is only 0. Countersunk holes can be precisely produced by EDM (Electrical Discharge Machining). 9300. Alloy & Abrasion Resistant Steel Plate.