Rings better as well. Therefore, AR400 will have a lower. April 2020 article for BallisticMag. 62x54 M80 Ball and higher velocity rounds. 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. Also, as was so eloquently put above, the weight and ductility of the steel allows for more energy to dissipate. There isn't a lot of information other that it's hard and tough. 62x54R fire from a PSL fails to penetrate, and all fragmentation and spall is fully contained with our. This specialized plate is designed for severe impact and abrasion applications. AR600: 570-625 BHN Typically (less common, but available)S7 tool steel is generally more expensive than AR500 due to its high-alloy composition and specialized manufacturing processes. t1 is normally used for things like lowboy trailers. Hardox ® 550 is a genuine alternative to wear parts made of manganese steel. Austenitic Steels: Non-Stainless. If you have it place solid so no energy can be disipated then yes it will still crater at 500yrds. Alloying elements allow the steel to be heat treated to obtain stronger physical properties. . for ceramic, and 6. Among the most notable things about the AUS10A steel is its hardness. AR400F is quenched and tempered through hardened wear resistant grades of abrasion resistant steel plate used for high impact and abrasion resistance. 5%, rounded to the nearest 0. Granted, I would tell someone buying steel to not do so without that build up coat. 11-14% (Hadfield) Manganese Impact Steel. AR500 is a quenched & tempered, abrasion-resistant grade of steel plate. Typical applications are material chutes, material moving parts, truck. However, this increase in strength and abrasion resistance will make the steel less malleable. Damage on the stand and upright is consistent with that of the steel. The much heavier versions, especially centered caliber model guns would require something stronger. 2. #3. Brinell Hardness Number (BHN). Brochure. 56x45mm or a round of 7. Manganese Steel Properties. Wear bar should break cleanly at the notch. This grade steel is a high-strength, low alloy steel plate. Level III steel plates can stop all the following: 7. MIL-A-46100. Clad wear-resistant steel vs AR500 wear-resistant steel. 5″) Ability to “Work Harden” from 470 BHN to 560 BHN. Since it’s an extremely durable and long. This video shows a . 5 rounds of 7. It has a tensile strength of 64, 890 psi and a yield strength of 58, 800 psi. Manganese steel is an alloy of iron and manganese, typically containing between 11 and 24 percent manganese. And as far as steel being loose in the pocket, with these and trauma pads, there will be no movement in the pocket. The AR500 is even more formidable than the AR400 when it comes to abrasion resistance. 25x the tensile strength of AR400, as well as a higher yield strength and tensile modulus. Tool steel is any of various carbon steels and alloy steels that are particularly well-suited to be made into tools and tooling, including cutting tools, dies, hand tools, knives, and others. That’s an increase in hardness of 30%. Why Hardox 550 beats 12% manganese steel and 500 Brinell steel in wear parts. As a high strength Carbon Manganese steel, ASTM A529-50 can be easily welded, and its ductility and durability make it a common option for bending and stamping projects as well as heavy duty applications. 26%; Manganese, 1. (Steel Jacketed, Steel Core or Armor Piercing Ammo may damage the steel. It has a carbon content of 0. AR stands for abrasive resistant. It's the grade of the plate. View Profile View Forum Posts View Articles Senior Member Join. Both plates of steel are quenched and tempered to give them better toughness and abrasion resistance. 05%;. Chromium carbide overlay plate begins with a mild steel base. 5 yrs CN Supplier . All of these are too heavy to make a full suit of plate armor from, and you can’t weld it without ruining the heat treatment. What is the difference between AR400 and AR500 steel? They’re fairly similar, but the AR500 steel is harder than AR400 (as the designation indicates). Hardox 550 comes in thicknesses of 10–50 mm (3/8–2") and widths up to 2800 mm (110"). 4% Carbon. 4140 steel welding, 4140 steel machining, 4150 steel properties, 316 stainless properties, ar400 properties, ar500 properties. For sliding wear, it usually stays at a moderate hardness of 400-450 HBW. I've also heard horror stories of case-head separation that nearly took the shooter's head of. 1-800-745-3962. Since 1971 we have provided personal service and steel fabrication expertise to a variety of industries including military, aggregates, mining, steel, glass, paper, scrap recycling and railroad. C. Abrasion resistant (AR) steel plate is a high-carbon alloy steel plate. For AR500 steel plate, the nominal harness is 500, and its range is 460 to 544. The much heavier versions, especially centered caliber model guns would require something stronger. Disclaimer: I haven't done AR500, just AR400. 2. ALLOY STEELS – Added alloying elements into the steel such as nickel. AR 500 is similar to AR 400, but 25% harder because it contains more carbon. 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. Hardox grades usually range from 400 to 600, while AR500 has a hardness level 500. MegademiC. AR-500F is ideal when prolonged service life where abrasion is the primary cause of failure. 308 Win. In fabrication and construction, the composition and grade of the steel plate materials used have a tremendous effect on the end product. 4140 steel properties. Plate thickness’ start at 3/16” and can go as thick as ten inches. A36 . Heat treating is used to improve forming and welding capabilities and to exhibit through hardening. At Spirit Metals, we work with the mills on all custom sizes to meet your project needs. AR450: 430-480 BHN. Ultra Hi Strength Alloy Wear Plate. Because of the heat treatment and quenching in oil rather than water, the microstructure is very homogeneous. Our main products are impact resistance 11-14% Manganese steel plate/bar, wear resistance Plate AR400, AR450, AR500, Military Armor 12560/46100 and A514 (T1 steel), A572. The higher the concentration of Mn in the alloy, the greater its tensile strength and abrasion resistance. Strength. At Clifton, for steel to be considered AR400, the plate must measure between 360 and 440 BHN. What is AR500 Steel? AR500 steel is an alloy that contains added alloys such as carbon and manganese. A quick Google also pops up a brand of body armor plates called AR500. Hardox ® 550 always performs at typically 550 HBW — no matter the type of wear. It is also one of those classified in the super category. 50%: A good dose of this helps boost the steel’s hardenability and wear-resistance. Just to be clear, we are not official scientists here. Peen the welds while hot. Tungsten – With the highest tensile strength of any. A53 pipes are thinner than A500 steel pipes. 25% carbon, some chrome, molybdemun, and manganese. If you want to get the ASTM A573 Grade 70/A573 Gr. NM500 Chemical Composition. A633 is high-strength low alloy. Chapel is one of the vendors that makes this stuff. 17 - 0. Buy Steel Plate Stock – Including Bisalloy, Hardox, & Strenx Steel Plate Products When you need to buy steel plate for your next construction project, no matter how big or small, you can trust Australian Steel to be able to meet your requirements. 7075 Aluminum Black Nitride. AR500 steel is an incredibly durable material used in snowplows, tanks and rock crushing machines. 4140 steel is a chromium, molybdenum, manganese low alloy steel plate that is known for its toughness, high fatigue strength, and high torsional strength. Tempering: Heat to 540-680°C, depending on the desired hardness. AR500 | AR500F Steel Plate. It also allows the processor to greatly improve the dimensional tolerance of the product being made. AR200 VS AR400 vs AR450 vs AR500: AR steels are governed by a level of hardness, but not a specific chemistry. To give the best comparison I u. Manganese is typically used for crops that require high levels of this mineral, such as soybeans and wheat, while magnesium is used for crops that require alkaline soil, such as tomatoes and peppers. Both Er70S-6 and ER70S-3 are solid wires used for TIG and MIG-MAG Welding of Carbon steel/ mild steel material. 2. 250) with beveling. 50W Steel Composition. Free shipping, arrives in 3+ days. 4% manganese to increase hardness while reducing the carbon content to 0. 25”-0. Scope. Material can be welded with. 6% carbon). Second, manganese steel plate has good heat resistance, and can be processed into various containers. A633 Steel Plate. The most common Manganese is known as Hadfield Manganese, invented by Sir Robert Hadfield in 1882. 9300 Request a Quote AR200 VS AR400 vs AR450 vs AR500: AR steels are governed by a level of hardness, but not a specific chemistry. Electrode classification is based on chemical Electrode classification is based on chemical composition of the electrode for solid electrodes, and chemical composition of the weld metal for composite electrodes. Compare price difference of manganese steel plate in india and USA, UK, Malaysia. Copper Jacketed Lead bullets are. AR500 Steel vs Hardox 500. Top options. AR stands for abrasive resistant. 035% (Max) Silicon: 0. Their suitability comes from their distinctive hardness, resistance to abrasion and deformation, and their ability to hold a cutting edge at elevated temperatures. Com Echo Valley Training Center’s (EVTC) Trijicon 1-8x. ER70S-3 . The smelting of NM500 vs ar500, spring steel is very important. Mangabraze is a proprietary grade of wear-resistant alloy plate, field-proven for over 50 years in providing the longest life in heavy industrial wear applications. Hardox ® 550 always performs at typically 550 HBW — no matter the type of wear. There are different types of steel, for example, AR400 OR AR500, that are produced to a specific hardness. Innovative solutions. General Info About AR600 AR600 is the most durable abrasion resistant steel plate. 25% (making the material more ductile) produces low-carbon (or mild) steel. September 14, 2023 Materials materials, Steel Table of Contents What Is Abrasion-Resistant Steel? Advantages of AR Steel How Is Abrasion-Resistant Steel Made? Identifying Abrasion-Resistant Steel Uses of. 024” thick or 24 gauge piece of 304 stainless. 338 LM has massive amounts of energy. For instance, if you need high hardness that is deeper and more uniform, you could add Nickel to the 4140. ATS Series: ATS 34 Steel - This steel is very similar to 154 CM. 9") and will. Combat robots tend to utilize AR500 as their choice for weapon material or armor because it strikes the perfect balance of toughness and hardness. AR500 steel has a hardness rating of around 500 HBW, making it highly resistant to surface abrasion and penetration. A fabricator or end-user may pre-harden pieces or parts of manganese steel by vibratory peening or shot blasting. We are a stockist for Ar500 STEEL PLATE EQUAL GRADE NM500. Chapel is one of the vendors that makes this stuff. 7 - 1: Phosphorus : 0. AR500: 460-544 BHN Typically. for polymer combined with UHMWPE. AR400 is a high-carbon alloy steel commonly used in mining, forestry, and construction. It can be welded with a lowWe call the formula FragLock™ and we’re proud to announce that it is the new standard for all of our steel body armor plates. Regular steel is too soft, resulting in bullets either punching through the target or making a crater whereupon subsequent bullets may bounce back toward the shooter or spectators, often with great force. 70 carbon manganese silicon steel plates steel price, please do not hesitate to contact us. Use bullet speed AT TARGET or muzzle velocity for worst-case scenario. 25 inch and 1 inch. MIL-DTL-12560 Rev K. If you want the best protection possible or. 1 For the purpose of this definitions shall apply. It features a tensile strength of 225 ksi, yield strength of 200 ksi, and an elongation property of 12 percent. Reduce plate thickness up to 25% vs AR 500 (ie. 20. It would be best to water jet the plates so no heat get into the edges and changes the heat treat properties at the edges. What is manganese steel? Manganese steel, also called Hadfield steel or mangalloy, is a steel alloy containing 12-14% manganese. Oct 7, 2021 | Steel Products Manganese steel is a steel alloy containing 11-14% manganese. This is the best steel for targets that I know of. In these terms, the AR500 is better than the T1. Carbon Steel Manganese steel. For over 50 years, customers in multiple industries have all relied on Clifton Steel products for the durability and. the AR-15 rifle. 93 g/cm3, gold is 19. BONUS: Shoot better. AR500 and AR550 are both designed to withstand many rounds of shooting. Mirro-Krome 60® (I. . As a premier supplier of AR400, AR500, A514, Chromium Carbide Overlay, Manganese Steel, Armor Plate & More, we have a long history of providing innovative solutions to the abrasion, impact and wear resistant steel markets. It is heat-treated for more through hardening and better welding capabilities. Hardox® 450 is an abrasion-resistant brand with a hardness of 450 bhn. AR550 steel is one of the more abrasion resistant steels available. Of the wide variety of compounds formed by manganese, the most stable occur in oxidation states +2, +6, and +7. These plates are curved and have dimensions of 10″x12″. Overview. With that said: 1) 3/8" AR500 plate won't hold up as well as 1/2" AR500 plate, not due to surface hardness but just general toughness. To put it simply, hardness is the resistance of the steel to penetration. TOTALLY FLAT SURFACES Steel targets need to have a perfectly flat surface in order to be safe for shoot -AR500 Armor plates are cheap, and in conjunction with a quality minimalist plate carrier you can have an armor package that will stop handgun, shotgun and rifle threats clear up to 7. 60% carbon. AR450: 430-480 BHN Typically. This type of steel provides excellent strength and durability while also being cost-effective. And if it does, it happens only when exposed to extreme impact wear. I've hit it with 800 grain Barnes LRS and Lehigh 510-170 808 grain solid brass, it plates the surface gold-colored. General Info About MIL-A-46100. Minuteman. Protect your jaw crusher with expertly machined and easy-to-install cheek plates made from Tensalloy™. Details. Light, thin, strong:. Ease of processing compared to conventional 500 BHN. The 18" stainless steel barrel has nitride inside and out for longevity and ease of cleaning. AR500? Regarding heavy-duty equipment and machinery, working with the right materials is important for the project. A529-50 Grade Steel. Dynamic Armor 46100® (Dynamic MIL-A-46100) is a high hardness ballistic steel plate product that is available in thicknesses from 3/16” through 2” (4. Details. AR500 is the toughest of the 3 varieties of abrasion-resistant steel, with a minimum hardness level of 500 at the Brinell scale. The carbon content is typically around 0. The number of electrons in each of Manganese's shells is [2, 8, 13, 2] and its electron configuration is [Ar] 3d 5 4s 2. A lot of people talk about ar500 and ar600, but those are industrial nomenclatures, and not actually steel chemical standards. The low carbon provides good welding characteristics and enhanced. 202K subscribers in the tacticalgear community. Strength. There isn't a lot of information other that it's hard and tough. 2-4 times greater life than conventional 500 BHN steels. With a Millermatic 180, you could do 3/16" (. Hankev is an industry leader in depth, breadth, and availability, serving over 1000 customers worldwide. It’s often referred to as Hadfield steel, or Hadfield grade, as Sir Robert Hadfield discovered it in read more Differences Between 4140 Steel And 4150 Steel Jun 8, 2021 | Steel Products What is manganese steel? Manganese steel is a steel alloy containing 11-14% manganese. If you need abrasion or wear-resistant steel materials, give us a call and. 321. Whereas 400 can be between 360 and 440 Brinell, 500 is between 477 and 550. Steel armor gives you a high ballistic rating, multi-hit capability, edge-to-edge protection, extreme durability, and long shelf-life. AR550 and AR600 plates of the same size would be lighter due to their increased thickness and hardness. MIL-DTL-46100 REV E. – 4130 steel is easier welding than AISI 4140 steel and its wear. Not a single model. #7 · Feb 10, 2016. 95% to 1%. 6. 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. Therefore, AR400 will have a lower hardness than AR500 / AR500F. The standard range for Hadfield Manganese contains 11% to 14% Manganese, and 1. AUSTENITIC-MANGANESE STEEL CASTINGS — SPECIFICATION ( Fifih Revision ) 1 SCOPE This standard covers the requirements for austenitic manganese steel casti rigs. 60% Manganese, while 4140 contains 0. Send us an Email sales@titussteel. J. 25% carbon, some chrome, molybdemun, and manganese. This cartridge in combination with our AR500 Pistol puts an unparalleled amount of power into a pleasant shooting, rapid firing. It will stop m855 green tip, etc. We have warehouses in IL/CA/IN/OK/OH with large on-hand inventory. The Brinell Hardness number differentiates the abrasion resistant steel grades. What is ar500 steel? AR500 steel plate is chemically similar to AR400 steel plate, except the hardness range is higher and it has more carbon and manganese. AR500F has can resist more impact than AR500. You're looking at about $430 for two steel plates, multicurve, with extra coating, plus tsg sleeves, and shipping. Clifton Steel’s Tensaweld Mang-312 is a gas shielded, flux cored, stainless steel electrode designed to weld in all positions. Best Wear Resistance of any abrasion resistant plate. ARMOX 600T is a nominal 600 BHN steel. Manganese steel also contains. General Info About A656. ToxFAQs™ for Manganese. 30% carbon, medium-carbon steel consist of 0. #4. This material will work-harden in service up to 550BHN hardness. 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. Thanks in advance. Manganese is a very common alloy element in steels produced by ingot metallurgy (IM) – in fact so common that steel grades containing up to 0. 556 projectiles that the AR500 fails to stop. It means that ar500 isn't actually a steel alloy, but just a market-friendly way of describing a certain type of steel that has been exposed to certain heat treatments. A529-50 offers an increased yield and tensile strength over A36 with less weight and a thinner profile. 7mm through 50mm). 30% to 0. Post by mopderbyproducts onSep 15, 2017 at 9:11am. 5” thick. Based on the rating of 160 Brinell B-1112 steel, the machinability of metal machinability chart is expressed as a percentage. It’s often referred to as Hadfield steel, or Hadfield grade, as Sir Robert. AR500 will take hits at close range from . 187) & possibly 1/4" (. Differences between AR400 and AR500 Steel Plate. AR400 vs AR500 steel are two popular types of abrasion-resistant steels used in various industries. 9 = Silicon – Manganese Steel. It is also called Hadfield steel after its 1882 inventor Sir Robert Hadfield of Sheffield, England. 25%, the manganese content is around 1. The lower the number, the softer the steel and the higher the number, the more brittle the steel. These forms (called compounds) are. Hot rolling the steel can’t be done without the manganese combining with sulfur and oxygen. With a hardness range between 477 – 550 BHN, AR500 is known for its toughness and excellent wear resistance, along with fatigue and corrosion resistance. Cladding wear plates are more wear resistant because the cladding plate is made of an alloy to improve wear resistance. A514 Steel Plate: Low carbon and sulfur levels, strong, and easily machinable. AR500 Steel Plate Sizes. It can also deal with high impact stress regardless of the temperature. These steels are usually much harder and tougher than normal carbon steel. Heat Treatment of NM500. 06 NIJ certified" and are listed on the NIJ approved armor section. 62mm NATO/. 3 TERMINOLOGY 3. 70 carbon manganese silicon steel plates steel in stock every month. promo code is ''EDWIN30'' for $30 dollars off this product exc. Hesco L210 vs AR500 level 3+ LW Both are the same price and weight. 4140 steel is a chromium, molybdenum, manganese. AR steel tends to come in between 235-550BHN. Here is an experiment to try. Smith and George E. manganese, and so forth. 62x51 m993 penetrates 50% more RHA steel than 5. Origin: NM500 is a Chinese standard (GB/T 24186) for wear-resistant steel, while AR500 is an American standard (ASTM A36/A36M-08) for abrasion-resistant steel. In comparison to other hard types of steel you can easily sharpen. Witness the quotes listed below from steel suppliers around the. AR-400F is 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 the primary cause of failure. 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. 내마모강은 균일한 경도 (hardness)를 유지하도록 처리되어 S45C 열처리 강판과 비교할 때 최소 3배 ~ 10배의 내마모 수명을 보유한 특수강입니다. I made and sold AR500 targets as a small side gig a long time ago and had a few people torture test my 1/2” targets. 15-1. And Mn16 belongs to high manganese steel, is a widely used wear-resistant steel, wear-resistant and impact resistant. 내마모강 (AR400,AR500) 2018. What is AR500 steel plate? Tensalloy™ AR500 steel is a grade of abrasion resistant steel plate that offers outstanding wear and impact resistance. $430 to make steel useable, but even heavier, or $540 or so for hesco L210's, or TSG LevIII+ lightweight polyethelyne, or levIv RMA's. It is designed to withstand thousands of. . 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 will handle . As per the official info page from the manufacturer, Big Horn Armory: “ (T)he AR500 Pistol is a large frame AR chambered in 500 Auto Max. AR400 Steel, AR500 Steel, A514, Manganese Steel, Armor Plate + More. Our AR500 wear plate is manufactured using modern technology which incorporates inclusion shape control, grain refinement, small batch thermal treatment, and low levels of sulfur and phosphorus. If you have any questions about our personal armor systems, give us a call at (520) 396-3335, or send. Let’s start off with the pros of steel since it’ll be short. 900” (48. 1. Low carbon steels are classified by having lower than 0. Best Wear Resistance of any abrasion resistant plate. Ar500耐摩耗性マンガン鋼ライナープレート厚さ3mm ~ 100mm , Find Complete Details about Ar500耐摩耗性マンガン鋼ライナープレート厚さ3mm ~ 100mm,耐摩耗性鋼板、マンガン鋼ライナープレート、 Ar500 鋼板 from Steel Sheets Supplier or Manufacturer-Tianjin Teda Ganghua Trade Co. Putting AR500 Armor® Level III Body Armor to the test against the heavy hitting 7. Hardox ® 600 for superior wear resistance. 1% to 0. AR500 Body Armor Group. 1/2 inch nm500 vs ar500 . First, pearlitic pipeline steel. 15-0. It means that ar500 isn't actually a steel alloy, but just a market-friendly way of describing a certain type of steel that has been exposed to certain heat treatments. The Hardox 450 vs ar500, wear-resistant steel plate has good impact properties:The wear-resistant steel plate has a double-layer metal structure. Plates are given a Brinell Hardness Number, or BHN, based on their level of hardness. In this case, Ar500 is preferable in the competition of Ar500 Plate vs. Nitronic 40 is a versatile stainless steel that has a high manganese content. Dragon Targets AR500 Steel Targets 1/2 Inch Thick Laser Cut, Painted AR500 Gong Targets for Shooting, Steel Targets for Shooting Made in USA (10 in) 3. AR500 Steel Physical Properties. 00% Manganese and 0. AR500: Abrasion Resistant: 470-540 BNH: MIL-46100: Military Grade: 477-534 BNH: MIL-12560: Military Grade: 330-410 BNH. ) 450 (429 min) 500 (450 min. 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. As a premier supplier of AR400, AR500, A514, Chromium Carbide Overlay, Manganese Steel, Armor Plate & More, we have a long history of providing innovative solutions to. , Wolf) will crater the AR500 steel a lot worse (this should be obvious). 4% of Mn are still regarded as ‘unalloyed’ [Citation 1]. 4. AR500 is a hardened steel that is commonly used for targets, armored applications, truck plows and in mining. H. Re: AR500 vs AR400 Steel?? AR400 = Holes at less than 300 yards. AR500 is more of a carbon and manganese alloy. Excellent toughness. AR500 plates can take a beating, as. The “AR” in AR500 stands for “abrasion resistance,” and the “500” signifies itsBrinell Hardness Number (BHN). 85 g/cm3. Austenitic manganese steel is unique in that it combines high toughness and ductility with high work-hardening capacity. This fact sheet is one in a series of summaries about hazardous substances and their health effects. . This alloy has high strength and excellent corrosion. So will solid copper projectiles, at fairly close range. AR400F has a minimum Brinnel hardness of 360. The ABREX Series features 3 standard options of abrasion resistant steel plate in addition to 2 extra tough options – a product range capable of meeting a variety of needs. Mills use a hardness test – the Brinell Test – to determine the category. 00%: Like manganese, this element strengthens and increases the steel’s hardenability so it’s easier to manufacture. 5 pounds with a thickness of 0. 따라서 바위, 모래, 석탄, 광물의 적재시 주는 충격이나 미끄러지면서 가해지는. Though these two grades have. 3% carbon by weight. AUS10A Steel Hardness. It’s important to note that despite the company’s name, these plates are not made of AR500. It only knocks off the paint. 3 and 12. Carbon added during the formation of the steel plate substantially increases toughness and hardness, but reduces strength. Manganese Steel Composition. PearlButter • Steel is a obsolete material for body armor, against modern threats. 2100-4000ft-lbs = ½” AR500. This contributes to AR 500 steel plates being used in shoots and conveyors, where there is more sliding abrasion. It is roughly six to seven times stronger and harder than mild steel but has the same density. 40%. 10% - 0. When compared with AR400 steel, AR500’s increased surface hardness allows it to outperform in certain high-abrasion applications. Compounds. It, however, won't easily break thanks to the addition of elements such as nickel, manganese and silicon. Most hard body armor plates on the market are going to be either AR500, AR550 or AR600. The CTS Targets 3/8” Steel IPSC Silhouette Rifle Target is the classic steel silhouette target. For round structural tubing with nominal OD of 1. A514 ¾” or less thick. Action Target can also provide through hardened steel targets and other steel products with certified Brinell hardness ratings of 550 and even 600. This AR plate is medium-carbon manganese steel with a moderate hardness of 212-255 Brinell Hardness. About .