AR400F is supplied in the quenched and tempered or as-quenched condition. While not a good candidate for forming and machining, AR400 plate is suitable for welding. P. Use this steel bolt-together framing to build guards, tables, and racks. They comprise different kinds of steels having composition exceeding the limitations of B, C, Mn, Mo, Ni, Si, Cr, and Va set for carbon steels. Search High Quality JIS standard carbon steel Manufacturing and Exporting supplier on Alibaba. Download our exclusive shooting targets for FREE ($47 value)Rhino-Tuf® EZ (AR400) Wear Plate; Rhino-Tuf® EZ (AR400) Wear Bars; Redi-Rail® (Formerly Kromite® CD60) Custom Wear Rail; Ultima™ 501 (AR500) Wear Plate; Ultima™ 601 (600 BHN I. Members from that forum are joining Renovate Forums on WWF and many old members have returned to WWF, most will also be members on these forums. Machining. BONUS: Shoot better. They can be easily. Grade 304 stainless steel is weak compared to 316. I'm needing to machine several stepped pockets in some AR400 steel plate. Contact. 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. With AR500 you need carbide and clamped solid. sephora americana manhasset. AR400 Steel Heat Treatment. I have a 4. It has good weldability. 1707 Highway 31 S. Length: 15. 080") 6082 - this is the finished size, and has pockets 1mm (. Bucket Bosses. I drilled a 1/4" pilot, and then drilled to 1-1/8" with a 118 deg 1/2" shank S&D bit. 321. Each of these grades have slightly different chemical compositions and mechanical properties. Thicknesses up to 3/8" can be hole. Sounds like you're going to do this on an ongoing basis, and if so, you oughta think about getting yourself a radial drill. Paid Time Off. Xometry offers instant quotes on metal laser. 040") deep, see the attached screen shot showing completed part. Impact-Resistant A516 Carbon Steel. Place the Ar500 steel on a stable work surface. Machining something requires applying a lot of little rapid hits to something - this is just what you need to make something magnetic. C. For example, it will resist fatty acids at high temperatures as well as sulfuric acid. New and popular video trendsMetals Depot - America's Metal Superstore is your complete supplier for industrial metals worldwide. Benefits of AR400 Steel Plate. (Sorry for the dirty window) comments sorted by Best Top New Controversial Q&A Add a Comment. Jan 20,. Even in operations that use dry machining versus wet machining, you’ll want to have at least some coolant on hand. The Brinell Hardness number differentiates the abrasion resistant steel grades. The AR400 wear-resistant steel plate on the market is divided into thin and thick plate. High torque, slow speed, geared magnet drills, like the VersaDrive series from Holemaker Technology, and ample Biocut blue lubricant are essential. Readily cold formed. The AR400 steel plate is often used in applications where abrasion-resistant, formability, and weldability are required. Properties of AR400 Steel Plate. Published On - preschool graduation cake. 015/. adama Diamond. 321. Service Temperature is 400°F. Chapel Steel's premium grade of these products are Chapalloy 360 and Chapalloy 400. Drilled thru with a Hertel HSS bit, (no cobalt) and I used a Hertel spiral point tap, TiN coated. Drilling, countersinking, counterboring, tapping, milling, and general machining can be done with conventional equipment and carbide tools. Part of the problem is that the 6-flute solid carbide countersink I bought for the job chatters like a banshee on much lighter work. ) Wear Pipe;. 5. While AR450 steel is similar to AR400 and AR500, there are some variances that make each unique. D. 1-800-745-3962 1-800-745-3962 [email protected] ShippingProperties The high-carbon composition and additional chemical alloys included in AR500 steel give the material enhanced hardness and wear resistance. This materials is an Abrasion Resistant, Thru-Hardened, Alloy product. What is this grade steel used for? It is used where high wear resistance is. MACHINING Drilling, countersinking, counterboring, tapping, milling, and general machining is performed. MACHINING. Differentiators include hardness levels, application uses, and cost. Weldability of Free Machining Grades of Steel. Drilling, countersinking, counterboring, tapping, milling, and general machining is performed with conventional equipment and carbide tools. Grade 316 stainless steel can resist temperatures up to 1600 degrees Fahrenheit. ASC2250® LDX vs 300 Series vs 400 Series Stainless;NITRONIC® 30 is an excellent grade to replace AR400 as an abrasion steel, abrasion corrosion resistant, abrasion stainless. 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. Hardness range is 360/440 BHN with a nominal hardness of 400 BHN. Technical Data Kromite® #3 and Mirraloy® TGP Machining Guidelines GENERAL MACHINING GUIDELINES. 4. Disclaimer: I haven't done AR500, just AR400. A. In addition to its general characteristics of being formable, while maintaining good abrasion resistance, AR400 steel also has the following. Supplier and product research . Uses for this plate include material handling equipment for mining. Maximum SFM . Our innovative approach means you get the benefit of state-of-the-art technology coupled with personal. Welding AR400 PlateAR400 Steel Machining and Welding. 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. As with other abrasion resistant steels, it does not have a defined chemistry, but rather, grade is determined based on hardness. Rhino-Tuf EZ is an abrasion resistant, “thru-hardened”, AR400 wear plate. 4th axis action! #cncmilling #4thaxis #cnc #milling #hurco #hurcovm20i #manufacturing #cncporn #cncmachinist #machinist #tillverkning #fräsning. AR400 Wear resistant steel plate is a special type of steel designed at a chemical level to improve wear resistance for special applications. AR400 steel plate has a lot of impurities and high carbon content. Apex EZ Sander 37" Single Head Wide Belt Sander, EZ3760MInv. 005-. Dec 2007. AR400 is a very hard abrasion resistant steel used for rock truck beds and other high wear items. 001-. Plates over 1 1/2″ have carbon increasing to (0. Grades of Plate include: A36, Grade 50, A572, AR400, AR500, A514, XF100, and Hardox® 450. Machining 2mm alu plate Hi folks, today I'm attempting to machine up a lid as part of a job we're trying really hard to get. diameter, CNC turning with bar feed capability up to 2 in. 0625" cut. 00. We will quote from worn or new parts. Contact Heavy Plate Division; A36 Heavy Steel Plate; A572; A516; A514; A709 Grade 36, 50, 50W, HPS 50W, HPS 70W; A830 Grade 1020; A829/4140; Low / High Carbon Non-Structural Steel Plate. This material is characterized by a smooth, blue-grey-red finish with a hardened surface and while not a good candidate for forming and machining AR200 plate is suitable for welding. jpg. 001 fpt, kennametal harvi 4 flute . TV . It features good abrasion resistance and is. Tensile Strength — 210,000 PSIStock Sheets & Shapes: We offer the broadest and deepest selection of metal plate, bar, and shape stock from inventory spanning many materials, alloys, and sizes. The versatile plates have outstanding mechanical properties that are constant across different conditions. H. Machining Algoma heat-treated plate is easy to machine when using the proper cutting tools, speeds and feed rates. Welding. r/multicopterbuilds. 0. 315” thickness offered in 48”-81” wide cut to your requested length. AR400 Steel Plate – Tensalloy AR400 Armor Plate . Alloy Steels. Another difference is that AR400 can be machined whereas AR450 is not recommended for machining. values of hardness are compiled and shown in Table 2. . By cold working, it can be strengthened before hardening of precipitation. Started by cutting a full sheet down into 8" strips on the plasma table. Locate and compare Machine Shops in Victoria BC, Yellow Pages Local Listings. The nickel and molybdenum content gives AR400 carbon steel the ability to resist wear better than all other carbon steel. TV . 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. This alloy wear plate offers excellent service for applications where formability, toughness, weldability and abrasion resistance are required. High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS (354)Chapel Steel is one of the nation’s largest distributors of carbon, high strength, abrasion resistant and specialty grades of steel plate. Since both base materials are Q&T, pay close attention to preheat and maximum interpass temperature. Kromite® #3 (4140/4150 mod. Custom Manufacturing: Extensive manufacturing capabilities spanning plasma, laser, and waterjet cutting, band sawing, and CNC multi-axis machining make us a one-stop shop for your. AISI 4340 alloy steel is a heat treatable and low alloy steel containing chromium, nickel and molybdenum. MIL-A-46100 has good machinability capabilities. Satisfactory machining and welding characteristics. However, this increase in strength and abrasion resistance will make the steel less malleable. AR400 Steel Physical Properties. Call or email us now for a free quote! Phone: 800. C. Aplicaciones. Grades A and B both have good material machinability. ) Wear Pipe;. 4140 steel welding, 4140 steel machining, 4150 steel properties, 316 stainless properties, ar400 properties, ar500 properties. Mild Steel Plate Black AR400 is a flat shaped plate of AR400 Black Mild Steel. Welding AR400 steel also requires some expertise, as the steel is prone to cracking and warping if not soldered. El AR400 tiene un límite elástico de 250 ksi en comparación con sólo 50 ksi en AISI 1045. 111. 2020. Grade 316 stainless steel can resist temperatures up to 1600 degrees Fahrenheit. 150” Speed 260 brazed, 330 throw-away Feed . The versatile plates have outstanding mechanical properties that are constant across different conditions. No big surprise about machinability, as AR400 has minimum hardness of 400 BHn, or about 42 HRc. 101. Due to its extreme hardness, AlgoTuf 500 is rarely machined. The AR400 steel he mentions is a common alloy steel used in earth moving and mining equipment. A588 welds similar to low carbon steels like ASTM A36 and ASTM A572. 080") 6082 - this is the finished size, and has pockets 1mm (. AR400 is made for improved formability with low levels of carbon and sulphur for inclusion shape control. Tensalloy™ AR400 Steel Plate is an Abrasion Resistant Steel Plate that offers outstanding wear and impact resistance. Drilling, countersinking, counterboring, tapping, milling, and general machining can be done with conventional equipment and carbide tools. AR400, or AR400F steel, is a high-carbon. 0625" wide by half inch deep. Certificates with a traceable lot number are available for these. AR400 Anodic Natura joins Axalta’s recent addition, AR400 Arcadia Silver, in the Alesta architectural product line. Another difference is that AR400 can be machined whereas AR450 is not recommended for machining. AR steels are a great choice to build a gate, valve or diverter if you deal with high. High quality AR500 wear resistant steel plate AR500 hot roll sheet 3/8 4x8 pricing $600. We drill AR400 with cobalt bits very, very slowly. . Intended for moderate wear applications, common uses include contact. C. It can be cut with plasma, oxy-Acetylene, laser, and water jet as well as with abrasive cut-off saws, thereby eliminating the need to acquire costly new cutting tools. AR500. Shop 24/7 with Alro. Min Order: 1. Machine manufacturers may recommend tapping, broaching, drilling, milling, turning, or sawing using suitable tool types, feeds, and speeds to machine 1045. Description. Mir50® Machining Guidelines; Close; ASC2250® LDX. Give us a call at 800-348-2529 or leave us a message. Advice on cutting and tumbling small shaft key. Next I experimented with the cheapest way to drill and machine the stuff. AR450 steel is a high-carbon steel alloy that has a surface hardness between 400-477 BHN. While some of this is a bit on the nose, there are other considerations you should. AR450 is not recommended for machining, but is formable. Mir50® Machining Guidelines; Close; ASC2250® LDX. AR400 (aka Hardox 400) is a high hardness, high strength, quenched and tempered, chrome-moly, boron treated alloy plate. Largest selection of AR400F steel plates at wholesale prices. Get directions, reviews and information for Alpine Cords Engine & Machining in Victoria, British Columbia. Call or email us now for a free quote! Phone: 800. Tap or Call: +1 (800) 237-0113. Home; Blog; Let’s TalkSSAB Tech Support has a high local presence worldwide and can visit customers at short notice to solve acute problems or to initiate longer term co-development projects. 0 - 70. While all of these grades have slightly different chemical properties, the mechanical properties remain the same for all. When compared with AR400 steel, AR500’s increased surface hardness allows it to outperform in certain high-abrasion applications. Now answer the question. The major advantage of HSM is fast cycle time and better tool life. Preheating and slow cooling are the most important steps in making this welding application successful. 001" per revolution for every 1/16" of drill diameter, plus or minus . 00 - $742. AR400 Flat Bars; ASTM A514; ASTM A829 AISI 4130/AISI 4140; Marine & Offshore Steel Plate. The Ar400 Steel Plate offers a good bending capability and shows enhanced resistance to impact abrasion. As with other abrasion resistant steels, it does not have a defined chemistry, but rather, grade is determined based on. 5. That nullifies the properties or AR steel. AR450 steel is a high-carbon steel alloy that has a surface hardness between 400-477 BHN. Torchhead. Machining Plasma cut AR plate. Kromite® #3 (4140/4150 mod. In the past the method has been to anneal the drill location, which works. Grade 316 stainless steel can resist temperatures up to 1600 degrees Fahrenheit. Machinability can help us to determine whether a type of material is suitable for CNC machining services. I've made alot of beveled and knife-edge parts out of AR360 and AR400 that had been roughed in or shaped by laser, plasma, and flame cutting. AR400 is “thru-hardened”, abrasion resistant, alloy wear plate. 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. 500 end mill kc633m gradeRhino-Tuf® EZ (AR400) Wear Plate; Rhino-Tuf® EZ (AR400) Wear Bars; Redi-Rail® (Formerly Kromite® CD60) Custom Wear Rail;. Abrasion resistant steel is created by quenching and. Mirraloy FM is a modified 1144 steel. 75 inch. LOCATION & PHONE. AR500 is slightly stronger (in terms of tensile strength) than 400, by about 20-25%. 0C1%Hf (Grade 21) Zircaloy 2 (Grade 32) Zircaloy 4 (Grade 34) Spot Welding Equip. Saginaw, AL 35137Rhino-Tuf® EZ (AR400) Wear Plate; Rhino-Tuf® EZ (AR400) Wear Bars; Redi-Rail® (Formerly Kromite® CD60) Custom Wear Rail; Ultima™ 501 (AR500) Wear Plate; Ultima™ 601 (600 BHN I. The Brinell Hardness number differentiates the abrasion resistant steel grades. 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. Serving Indiana Custom Manufacturer* $1 - 4. Bending the sheet metal longitudinally (with the grain) allows those grains to separate at the grain boundaries. ar400 steel equivalentwhere to buy organic wheat seeds for planting. Troicoidal, adaptive, profit milling, high speed machining or whatever you want to call it is your friend here. Length: 15. One of two abrasion-resistant grade steels offered here at SendCutSend, AR400 steel is formulated to take a massive amount of punishment and. Grade 304 stainless steel is weak compared to 316. It has good weldability. ASC2250® LDX vs 300 Series vs 400 Series Stainless;AR400, AR450, AR500, AR550 and AR600 Wear Resistant Steel Plate $450. Proper consideration should be given for material choice dependent upon specific requirements and/or in-house machining capabilities. 0 370 - 430 1000 - 1100Hi folks, today I'm attempting to machine up a lid as part of a job we're trying really hard to get. These are for some sawdust buckets. Ask Howard. 0AR400 is a type of steel plate. AR500 | AR500F Steel Plate. Dissimilar Metals. ContinuedWhile not a great candidate for forming and machining, AR400 plate is suitable for welding. Algoma recommends the followingGrain direction also plays into the amount of springback you can expect. Please use the form below to contact us and we will get back with you as soon as possible. The hardened condition is used where added strength or resistance to wear is desired. AR400 is a much stronger and harder steel than A36 steel. Winco-Tuf 40 is for use in areas where AR400/AR500 are currently used. These thumbs are made to last. Every unfinished part needs machining to produce a finished product by cutting away some material. AR400 is a much stronger and harder steel than A36 steel. Milling. The chrome plate is a minimum of . It is common for 4140 alloy steel to be supplied in either the annealed (soft) condition, or Quench & Tempered (Q & T), the hardened condition. D. com. These thumbs are made to last. 9300. Wear-Resistant AR400 Carbon Steel. High Strength Steels. Hardox® 450 combines good bendability and weldability with an possibility for assured impact toughness (Hardox® 450 Tuf). The typical Brinell Hardness range is 360-444 BHN. Welding Tensalloy™ has excellent weldability and can be welded with. These bucket bosses are 2-1/2" thick AR400, and have M12-1. I have milled alot of. 6107 E-MAIL:. Welding. While not a good candidate for forming and machining, AR400 plate is suitable for welding. Generally speaking, these problems can be. . I. 75 inch. In carbon steel, the carbon content is King. However, steels of this hardness cannot be fabricated as readily as conventional structural grades. 4140 steel welding, 4140 steel machining, 4150 steel properties, 316 stainless properties, ar400 properties, ar500 properties. 00 - $1,100. ASC2250® LDX vs 300 Series vs 400 Series Stainless;Details. 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. 9300. Overview. So what have we learned?? Use A36 for general steel fabrication, 4140 for machining, T1, AR400, AR450, Hardox 400, and Hardox 450 for screens. Like other wear-resistant steels, it does not have a defined chemical composition, but rather a grade based on hardness. Mir50® Machining Guidelines; Close; ASC2250® LDX. 0625" cut. [2] This allows mangalloy to retain its toughness . Machining. AR360 / AR400. USA Quality Runser Custom Machining Thumb: This thumb is composed of two ¾” thick AR400 steel tines. ) Wear Pipe;. 040") deep, see the attached screen shot showing completed part. 06-10-2010, 01:11 PM. What is the best material to use in manufacturing wood grinder screens? The answer depends on the size of your wood grinder and the material you run through it. 1. At sharper bends, wear plate forming should be performed with the axis of. Generally, when talking about conventional vs climb milling, people often assume that climb milling is better because it has minimal load, offers a better surface finish, and ensures that the tool lasts for a long time. 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. As a result, customers can expect longer-lasting wear parts in some of the toughest applications. It does not exhibit hard and/or soft. The tensile strength of A514 alloy steel is specified as at least 100 ksi (689 MPa) up to a 2. ASGCO® “Steel Fabrication” division is a full-service steel fabrication, contract manufacturing, machining, welding and finishing facility that has the ability to manufacture simple parts to complete assemblies to complex print-to-build projects for Original Equipment Manufacturers (OEM’s) and industrial customers. The "AR" in AR400 Steel stands for "Abrasion Resistant". 5425 N Whitaker Road. CITIZEN Machines; Colchester Tornado lathes; CNC "do-it-yourself". ASC2250® LDX vs 300 Series vs 400 Series Stainless;Hello Unregistered PLEASE NOTE: Recently Renovete Forum closed down. 4000-10000ft-lbs = ⅝” AR500. D. Hardox® wear plate for extreme abrasion resistance. hi there, I'm new to cnc, and was thinking of making a machine (checking out all the useful info on this forum), but then a small job came up that meant it would be useful to get one straight away, so I bought a Gerber AR400 off ebay (4x4 foot bed). 007 inch/revolution. AR400, The only reliable steel supplier of Rhino-Tuf® EZ Wear Bars, abrasion resistant AR400 wear bars and wear strips. 024 high to catch the sheet of paper to push it along. All I had. Min Order: 1 ton. The resistance in heat and hardness allows the tool to run about 20-30% higher machining speeds than uncoated end mills. ASC2250® LDX vs 300 Series vs 400 Series Stainless;The nickel and molybdenum content gives AR400 carbon steel the ability to resist wear better than all other carbon steel. MACHINING Drilling, countersinking, counterboring, tapping, milling, and general machining is performed. It is a high-carbon steel alloy that provides greater impact and sliding abrasion resistance by comparison. I have a 4. AR500 | AR500F Steel Plate. Stage 1 – The system calculates the desired maximum chip load according to the cutter type, diameter, and raw material. The main differences are hardness and strength, achieved through varying levels of carbon and manganese. Differentiators include hardness levels, application uses, and cost. Request a Quote. ) Hot Roll; Kromite® CD (4140 mod) Cold Drawn;High-speed machining refers to high feed rates and spindle speed for removing material without compromising part quality and precision. ) Wear Pipe;. The first method I tried was to just carpet tape the part to a fixture, then machine the part. If your material is 1" or less in thickness, it will be hard from top to bottom. Warren, MI Custom Manufacturer* $1 - 4. com. 9 Mil 1951 10-49. Drilling – 1/4” Diameter Speed 50 fpm Feed . 090 with a wedge shaped step . Hardox is a wear resistant steel; Also, the combination of hardness and toughness made this steel the best choice when looking for both properties. Redi-Rail® Custom Flame Hardened, Precision Cold Finish, Wear Rail. #3. A quenched & tempered, high-strength, weldable steel plate utilized in structural applications. AR500 is a high-carbon alloy steel that performs in severe weather conditions and shows excellent wear and impact resistance. We have AR400 and AR500 angle in stock!NOTE: Varying conditions can easily require adjustments. Coal Mines; Power Plants (Gas, Coal)Your AR400 has a Brinell of 400, and this stuff is nasty. ASTM A131 A&B / ABS A&B; ASTM A131 / ABS AH36 / ABS DH36 / ABS EH36; API 2H Grade 50; ASTM A633; PVQ Steel Plate. need a little help feeds/speeds in ar400. A quenched & tempered, through-hardened, abrasion-resistant grade of steel plate. However, it’s not a suitable approach in every single case because there are severe drawbacks as well. 375” – 2. AR400: This steel provides a high degree of hardness and strength because of its quenched and tempered chrome-moly, boron treatment. AR500 | AR500F Steel Plate. Both AR360 and AR400 have a minimum brinell of 360. View in full-text. AR400 hardness: 360 minimum / 400 nominal. We specialize in CNC and manual. The ability to multi-task and work under pressure. The lid is made from 2mm (. For the thicknesses given, the AR400 should have a minimum preheat of 250 degrees F and the A514 a minimum of 125 degrees F. The precision machining and available capacity offered by our 13 Okuma lathes and mills set us up as the premier small to medium-size tool shop. Our capabilities include the latest version of AUTOCAD and Blue Print services. STRUCTURAL STEELS. Theres nothing cheap about machining anything north of 40HRC. Cutting speeds greater than Algoma’s recommendations can cause rapid tool deterioration. Ultima 601 is designed to extend service life where abrasive materials (i. The carbon content of 0. HEIDENHAIN Forum - HEIDENHAIN develops and manufactures linear encoders, angle encoder, rotary encoders, and CNC controls for rigorous positioning tasks. Resources. The major advantage of HSM is fast cycle time and better tool life. ) Wear Pipe;. Due to the large difference in yield strength between the AR400 plate and the filler material, minimizing weld restraint is critical to control cracking of weld. Up to . Email Project Specification: sales@ameralloy. 3 and 4-axis precision CNC machining services for castings, weldments, steel, stainless steel, aluminum, brass, bronze, copper, and alloy steels. This material offers a high degree of machinability, like a carbon steel, and has the strength consistent with an alloy steel. 75 thru tapped holes. in Saugerties, NY, is a steel fabrication service provider that works with a variety of metals, including aluminum, stainless steel, and structural steel. Find Metal Plates and Plate Stock on GlobalSpec by specifications. Material is displaced during punching with less edge distance. CNC Machining; 2 3. 5" thick plate im using 11psi propane and 60psi oxygen for the cut, at 16ipm. , Ltd. has the knowledge, resources and equipment to completely support all types of machining services. The tensile strength of A514 alloy steel is specified as at least 100 ksi (689 MPa) up to a 2. 080") 6082 - this is the finished size, and has pockets 1mm (. 1; 2; First Prev 2 of 2 Go to page. CNC Machining Centres; CNC Swiss Screw Machines. AR400F exhibits an optimal combination of hardness, abrasion resistance, formability, and weldability. ASTM A514 AR400 abrasion resistant steel plate is a good candidate for some processing techniques. 500 end mill kc633m gradeMachining. AR400 is “thru-hardened”, abrasion resistant, alloy wear plate. Conventional milling is preferred for rough surfaces.