In short, it’s the perfect stuff to throw bullets at. Weldable with low hydrogen rod. 59. 20 percent), chromium (. AR400 abrasive resistance steel plate is intended for higher, impact, wear applications where cold-bending and very good weldability is important. Under shock and impact, it nearly triples its initial surface hardness, retains its interior toughness, and acquires a high polish. A0. T1 Steel vs A36 Re: AR400 compaired to Hardox 400. ContinuedMalleability vs. AR450: 430-480 BHN Typically. Ductility Plastic deformation properties. 4140 steel, 4150 steel, 316 stainless. Clifton Steel Knowledge Center - Your source for today's most accurate information on AR Steel, Manganese Steel, Armor Plate, AR400, AR500, A514 & more! 1-800-745-3962 [email protected] ShippingClifton Steel is the leading supplier of AR400, AR500, A514, Manganese Steel, and Armor Plate. Directions. This will need to be completely rebuilt with AR400 or Wearox down the road and I will have to budget for it. What is manganese steel? Manganese steel, also called Hadfield steel or mangalloy, is a steel alloy containing 12-14% manganese. Manganese bronzes are used for components such as bearings, gears, marine propellers, and valve stems. 035% Phosphorus; ≤ 0. C1020/1020 Steel Plate. 5” to 6” thick. Use Manganese Electrodes. The Anneal, Normalize, and Stress Relieve processes are different than normal heat treat because there is no quenching or tempering process. For example, a 1/2″ nominal plate is typically a 1/4″ overlay applied to a 1/4″ of base plate. Results of this investigation demonstrate how the high strain-hardening capability of the high manganese steel. This process provides formability, improved surface texture and flatness. O. ) Shaft; Close; Metric Metals; Fabrication Services. These elemental differences help the steel achieve a higher surface hardness. 04% Sulfur; 5160 steel is exceptionally tough and resilient. These features, combined with Mangalloy's high tensile strength, make it an ideal material for heavy impact and abrasive service. Manganese ranks second in importance among allying. The first difference between manganese steel and carbon steel is that mangalloy softens rather than hardens when rapidly cooled, then restores the ductility from a work-hardened state. You can find hardness levels for AR400, AR450, and AR500 on their respective pages. . Re: My dumb question for the day AR 400 vs mild. NM is its first word of Chinese Pronunciation NaiMo ; Application: Crusher, sieve plate ,feeding hopper ,blade plate ,conveyor ,bucket ,cutting edge ,dump Truck ,scraper ,industrial truck, railway. 2° to 7. 5%; Phosphorus. Manganese is a trace mineral. If the Manganese has work-hardened in service (such as. This grade steel is a high-strength, low alloy steel plate. AR400F is produced through austentizing, water quenching, and tempering. For extreme applications & media being processed, Clifton can also supply Cheek Plates in Tensamang™ (11-14% Hadfield Grade Manganese Work Hardening Steel) & Clif-Clad® Chromium Carbide Overlay, machined complete to your custom request. Manganese is considered an essential nutrient and can be found especially in seeds and whole grains, as well as in smaller amounts in legumes, beans, nuts, leafy green vegetables and tea. AR400; AR450; AR500; Manganese Steel; AR250; A514; Chocky Bars; 4150 Steel Bar; Scrap & Recycling. 25 percent), molybdenum (. A36 is made in a fashion similar to most carbon steels. Magnesium has an electronegativity of 1. 11xx series: the amount of Sulfur (S) is increased from 0. 5t can be used when bending parallel to the roll. 1 416 Stainless Steel is a resulphurized grade. Email:tonyb@associatedsteel. 81“ AR400 steel $5195 #1030. Grade 70 has the highest tensile strength of them all, between 485 – 625 MPa. Office: (800) 321-9300 Email:jessicab@associatedsteel. As you can see, the mechanical and chemical properties of 1018, the machinability, and the surface finish of 1018 steel are all superior to A36. Mir50® Mir50® vs 304 and 316 Comparison Chart; Mir50® vs 410 and 416. This form of steel is often utilized in industries wherein heavy wear and tear are not common, consisting of mining and. AR400 / 400F; AR450 / 450F; AR500 / 500F; AR600; Offshore And Marine Steel Plate. Mirro-Krome 60 has an induction hardened layer that is a minimum of . All of our products are maintained at very low impurity levels, making them well suited to welding and formability. 30% but the addition of 0. Wear-Resistant AR400 Carbon Steel. Ar400 is an alloy of abrasion-resistant steel, while Hardox is a company based in Sweden that manufactures high-quality Ar plates. Limited cold forming and bending can also be done. Differentiators include hardness levels, application uses, and cost. However, with the proper welding strategies and system, ar500 can still be successfully welded. Typical hardness range is 400/440BHN. Available in standard and heavy (3-inches or greater) plate thickness. As with other abrasion resistant steels, it does not have a defined chemistry, but rather, grade is determined based on. The versatile plates have outstanding mechanical properties that are constant across different conditions. Usually, it’s measured in units of force per cross-sectional area. ; Our fleet of over 300 trucks provide next day delivery for all your metals needs. Material propertiesAR450 steel is a high-carbon steel alloy that has a surface hardness between 400-477 BHN. 55% carbon, 1065 carbon steel contains 0. What makes manganese steel special? It has an extremely high impact strength and abrasion resistance in its hardened state. Rhino-Tuf EZ is different from commercial grade wear plates. AR500 is a medium carbon, abrasion resistant steel that is. AR500 has higher abrasion resistance, but AR400 has higher impact resistance. It exhibits excellent work hardening characteristics in service applications where impact and abrasion are prevalent. C. 0332 St14 14491CR 1008People should not consume more manganese than the upper limits from food, beverages, or dietary supplements unless their health care provider recommends doing this. This is in sharp contrast to the situation in other European countries and Germany's domestic steel mills, which are. HOUSTON, TX. A618 Hot-Formed High-Strength Low-Alloy Structural Tubing - Grade II--Benefits of A514/T-1 Steel Plate A514 steel plate’s chemical composition and heat treatment give the material greater toughness and strength compared to non-heat-treated carbon steel plate. It. However, with the proper welding strategies and system, ar500 can still be successfully welded. The typical Brinell Hardness range is 360-444 BHN. AR235 A high carbon and manganese abrasion resistant steel. When welding Manganese to any other metal, use 309 or 310 SS electrode w/ minimum heat input (4) Plasma. This includes carbon (. 0. NM360 NM400 AR400 manganese wear steel plate It is widely used in mining mchinery,environmental protection machinery,cement machinery,engineering machinery etc due to it is high wear resistance. 2020. AR500 is slightly stronger (in terms of tensile strength) than 400, by about 20-25%. Abrasion resistant steel is a high-carbon alloy steel that is produced to resist wear and stress. What is AR200 Steel? AR200 steel is a medium-carbon manganese steel with moderate hardness of 170-250 BHN. 62×39 and similar. Leeco Steel stocks the following standard sizes, but other sizes may be available for special orders. When deciding between the two steels, take into consideration the end application and the quantity that you will need. Here are. However, this comes at a cost—AR400 steel tends to be much more expensive than mild steel. You WOULD have to heat treat it, unless you got a piece already heat treated, in which case you'd have one hell of a time working it. Loaded With Vitamins and Minerals. Typical stock size: 72” W x. AR400; AR450; AR500; Manganese Steel; AR250; A514; Chocky Bars; 4150 Steel Bar; Scrap & Recycling. Big, big difference. Email: Contact information (email & phone numbers) for. About Leeco. AR400F is produced through austentizing, water quenching, and tempering. Creusabro® Unique, best, Proven Creusabro®6400 is a new generation abrasion-resistant steel with high Manganese content (4 %). Galvanic series. A36 & A572 Material Specifications. 315”. Strength. At Clifton, for steel to be considered AR400, the plate must measure between 360 and 440 BHN. –. Exercise 3. As you can see, the mechanical and chemical properties of 1018, the machinability, and the surface finish of 1018 steel are all superior to A36. 3. Specialty Steel. 2. Hardox ® 600 for superior wear resistance. A572 plate is a high-strength, low-alloy structural steel that includes five grades—42, 50, 55, 60, 65 and 80—according to their minimum specified yield strength. This means that 1055 carbon steel contains 0. (heavy A36 steel plate) Over 1 1/2" to 2 1/2" Thick. AR400 and AR500 plates are AR plates that are 400 and 500 BHN, respectively. * Glancing impact shots – handgun rounds. 223 and it just leaves tiny dimples. 050. AR500 is more of a carbon and manganese alloy. AR400 plate is resistant to corrosion from atmospheric conditions and protects well against impact abrasion. It is widely used across numerous industries . ) Shaft; Close; Metric Metals; Fabrication Services. AR450 is an abrasion resistant plate used in a variety of. 1) A = E × L × C. Standard. It is an beneficial element in HARDOX 400 vs ar400 steel. AR400 has 400W strong power and 22 steps of power control (1/1~1/128). 030% (Max) Sulphur: 0. This specific steel has good formability, weldability, and notch toughness when in the as-rolled condition. AR400 Steel Hardness. The technical difference between AR400, AR450 and AR500 is the Brinell Hardness Number (BHN), which indicates the material’s level of hardness. The built-in modelling light also means that you can potentially use this as an on-axis fill when shooting video, too, although the. AR500 steel plate is chemically similar to AR400 steel plate, except the hardness range is higher and it has more carbon and manganese than AR400. AR400 steel plates are suitable for applications that requires a good level of abrasion resistance (i. Introduction. AR200 steel is a medium-carbon manganese steel with moderate hardness that's supplied nationwide across our 40+ branches. The bond cannot separate under abrasion or shock. Supplied as a 5083-H131 product. Manganese does not have a special taste or smell. Be careful about brackets welded on the back of any target. Hankev International is a wholesales distributor of 11-14% Manganese Steel, AR400/AR450/AR500, Military Armor, A514 T1 steel in USA. Sulfur S 0. Hardox® 400 is available as plate in thicknesses of 0. Workwear 14 is a true austenitic 11-14% manganese steel (Hadfield Steel) product. Hammer Pins & Tie Bolts; Manganese Separator Drums; Shredder Wear Parts; Wear Pipe. The body maintains stable tissue manganese concentrations through regulatory control of manganese absorption and excretion [ 5 ]. In 1883, the British had first obtained a patent from R0. They comprise various types of steels having compositions which exceed the limitations of Va, Cr, Si, Ni, Mo, C. Some of the common. AR500 steel plate measures between 477 and 550 BHN. 80 for 2-3 mm and increases as per the thickness. 5% nickel, 0. O. No matter what the steel plate thickness or the grade, we’ll have whatFor our V30 model, which is compatible with most compact tractors, we utilize AR400 steel to strengthen the attachment to compensate for regular wear and tear. The AR500 is even more formidable than the AR400 when it comes to abrasion resistance. Click here for the chart. AR400- better for impact applications, AR500- better for sliding applications. AR400F has a minimum Brinnel hardness of 360. Redi-Rail® Custom Flame Hardened, Precision Cold Finish, Wear Rail. The durability of A514 plate means it will need to be. 1230 E. 30-0. Abrasion Resistant, AR400 Wear Bars & Strips. Carbide – Depth of Cut . This increases its strength and pliability though it’s less malleable than AR400. It is also tough classed as a marine & offshore steel plate grade and can be used in different of applications because of its stringent specifications. S. Manganese plays an important role in hardox 450 vs ar400. 03 million mt. Cation (metal) first. AR400 245 Heat treated, quenched and tempered AR plate. The melting and boiling points of magnesium are 650 °C and 1090 °C. 03-13-2010, 09:48 AM. AR500 Steel. The Anneal, Normalize, and Stress Relieve processes are different than normal heat treat because there is no quenching or tempering process. P. Leeco ® Steel maintains one of the nation's largest inventories of carbon, HSLA, and alloy steel plate products that come from the premier mills domestically and worldwide. There are different types of steel, for example, AR400 OR AR500, that are produced to a specific hardness. In three (3) out of six (6) shots [3 center shots, 3 glancing] with 9mm FMJ ammunition against the cylindrical samples there was no spall in front of the samples. The main food sources of manganese in the U. BHN signifies the hardness level of the material: AR400: 360-440 BHN Typically. The galvanic series determines the electrochemical potential and nobility of metals and metal alloys. Manganese, 1. Like its predecessor, the new bullet weighs. Birth to 6 months. The spall angle range for the AR500 vs. P. AR400 is quite a bit stronger, but how much is can't be accurately stated. There’s really no single specific chemical composition for AR400 steel, as long as it meets the required hardness level. That’s an increase in hardness of 30%. P. While all three types of abrasion resistance steel offer great hardness, they vary in. 2. Clifton Steel is a leader in custom metal and steel fabricating services complete with machining. The process provides a chromium carbide overlay metal that is fusion bonded to high quality plate. Manganese plays an important role in hardox 450 vs ar400. 56x45 mm NATO, M855 standard ball cartridge in June 2010 with the lead-free, or “green,” M855A1 cartridge. MOA Targets LLC 3955 Wild Horse Rd Reno, NV 89510 (775) 623-7152The spall angle range for the AR400 vs. The temperature used to heat the steel is based on the chemical composition of the product. They can be easily. More Info. 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. COM presents the material machinability chart shows the machinability of metals and plastics. AR400F is quenched and tempered through hardened wear resistant grades of abrasion resistant steel plate used for high impact and abrasion resistance. More Info. AR400 abrasive resistance steel plate is intended for higher, impact, wear applications where cold-bending and very good weldability is important. AR400 plate is resistant to corrosion from. 150” Speed 260 brazed, 330 throw-away Feed . AR plate product numbers range from 200 to 500 and typically indicate the hardness of the material: AR200, AR400, or AR500 are examples. Two key factors to these three processes are the temperature to heat the material to and the cooling time. Home; About Us; Steel Products. 035 percent). This includes carbon (. Approx. AR400: 360-440 BHN. The subsequent grade would be an alloy called 4340. AR500 – Understanding Abrasion Resistant Steel In construction and fabrication, the grade and composition of. O. AR400 contains many of the same elements as other tool steel, according to Baldwin International, a company that makes a steel based on AR400. AR500 has the highest tensile strength, so it is more durable and better suited for high-stress applications. 4% silicon and 1. P. 9mm FMJ was 7. Upper Limit. Thumb Selection Considerations. Kromite® #3 (4140/4150 mod. I think that the 1080+ was devised because of the carbon content. Rhino-Tuf EZ Wear Bars & Wear Strips are manufactured from high quality, abrasion resistant ,“thru-hardened” AR400 steel. H. Phone: 800. 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. 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. 351,000 PSI. 16. Used where impact or sliding abrasion materials require tougher and harder steels to improve equipment life. Workwear™ 14 (11-14% Manganese) Wear Plate & Wear Bar; Close; Chrome Bars. 95% carbon. Mobile: (216) 389-2897. 2. Common trade names include Jess-Air, Diecrat, LO-AIR, VEGA, Apache, Orbit. AR400 is “thru-hardened”, abrasion resistant, alloy wear plate. 80CrV2 steel vs 1095. O. diet are tea, vegetables, and whole grains. There is no more effective quick fix available. An illustration of the appearance of AR400 steel. More detailed information on dimensions is provided in. 92”. Custom applications can use an A-514. ) Shaft; Close; Metric Metals; Fabrication Services. AR200, AR225, and AR235, all under the umbrella of AR Medium, or ARMED, is a medium-carbon manganese steel with moderate hardness that’s supplied nationwide across our 40+ branches. 1. AR400 steel is a high-carbon alloy steel that is specifically designed for abrasion and wear resistant applications. Label on a bicycle frame indicating mangalloy. It's found in foods such as nuts, whole grains, and leafy green vegetables. AR200 can be machined, punched, drilled, and formed and is known to be an inexpensive abrasion-resistant material. 48 percent), silicon (. Ergo, only a small amount of manganese can be absorbed per meal. First, iron ore and coal are combined in a furnace. thickness equation balances out; AR400 was substantially cheaper than AR500 in the same plate thickness last I bought some. Removal of the chrome plate and the induction hardened layer will necessitate the use of somewhat unique tooling. In addition to large amounts of vitamin C and manganese, pineapples add to your daily value of vitamin B6, copper, thiamin, folate, potassium, magnesium, niacin. Menu. Build a Quote for A514 Steel Plate. Exact furnace controlled temperature is not required, a heat crayon should suffice. ) 450 (429 min) 500 (450 min. The melting and boiling points of manganese are 1242°C and 2061°C. except the hardness range is higher and it has more carbon and manganese than AR400. These elemental differences help the steel achieve a higher surface hardness. AR400 has a tensile strength of 135,000 psi, while AR450 has a tensile strength of 170,000 psi. AR400 is a quench and tempered steel and may be difficult to weld due its high strength and hardenability. Meanwhile AR500 / AR500F is not formable, but shows good machinability. Manganese, Mn. S355 steel is a European standard structural steel which is commonly used in Europe, the material is better than S235 and S275 structural steel in yield strength, tensile strength and other properties. Small quantities of molybdenum, chromium, nickel, aluminium, and copper are present in these steels. gtaw smaw fcaw saw sa 106 gr. Ar400 Wear Plate is designed with a minimum tensile strength of 1318mpa with a minimum yield strength of 1187mpa. 75-1% Manganese; 0. 1 million metric tons. 3% Silicon; ≤ 0. The AR235 plates are intended for moderate wear applications where it offers improved wear resistance relative to structural carbon steel. The clad steel plate is widely used to make acid and alkali resistant container. ) Shaft; Close; Metric Metals; Fabrication Services. We are in the process of replacing a horizontal drag chain conveyor handling (wet/damp) coal. The Hardox 400 grade has similar properties and. S. Manganese steel is non-magnetic and is less likely to rust than carbon steel. What is manganese steel? Manganese steel, also called Hadfield steel or mangalloy, is a steel alloy containing 12-14% manganese. P. For AR500 steel plate, the nominal harness is 500,. Like quenching and tempering, precipitation-hardening also involves two periods of re-heating and cooling steel plate. The carbon content provides strength and hardness, while the manganese. AR200, AR235, AR Medium, AR400/400F. 88 percent), sulfur (. Hardox® 450 is an abrasion-resistant brand with a hardness of 450 bhn. Here at SendCutSend, we offer both AR400 and AR500 grades to suit any abrasion-resistant projects you may have. Steel grade ASTM A529 Grade 50 is high-strength carbon manganese steel for structural purposes that meets the requirements of ASTM A529/A 529M. In the case of AR400, the plate’s hardness would equal about 42 Rockwell C (HRC) or approximately 400 on the Brinell Hardness scale, while AR500’s hardness would be around 50 HRC or roughly 500. AR400, AR500, AR400 wear bar, AR400 wear plate, AR500 wear bar, AR500 wear plate, Chromium Carbide Overlay plate, 11-14% Manganese, Wear Pipe, Call now for free quote! Phone: 800. However, it’s also more prone to shattering when. These forms (called compounds) are. he technical difference between AR400, AR450 and AR500 is the Brinell Hardness Number (BHN), which indicates the material’s level of hardness: AR400: 360-440 BHN Typically. 225 West Burville Road Crete IL 60417General Info About A572. Titus Manganese will work harden from 280 BHN to 550 BHN—which is an increase in hardness of over 200%. For instance, if you need high hardness that is deeper and more uniform, you could add Nickel to the 4140. The protection of landmines and explosives. 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. Though these two grades have similarities, the key difference between the. [email protected] 24/7 Customer Support +86-13761906384 . 3/16″ – 3″ (Widths 72″ – 96″ – 120″) 1/4″ – 2 1/2″ (Widths 72″ and 96″) * Chemistry may vary depending on thickness and application – Please inquire. 11-14% (Hadfield) Manganese Impact Steel. In addition, the residual elements such as copper, molybdenum, aluminium, chromium and nickel are present in these steels. The datasheet given below provides an overview of AISI 1215 carbon. AR200 VS AR400 vs AR450 vs AR500: AR steels are governed by a level of hardness, but not a specific chemistry. If that road can only handle 1,000 cars per hour then it doesn’t matter if 500,000 cars are lined up because only 1,000 are going to get through. Ar400 Vs Ar500 Abrasion Resistant 500 has more carbon and manganese content in its chemical composition and thus it has greater hardness compared to Abrasion Resistant 400 steel. 18250 Miles Avenue. 13, EFeMn-A) E-FeMnA If welding Manganese to carbon or alloy Use Covered Stainless Electrodes (AWS A5. AR400 Steel Plate Sizes. It won. EN8M / EN8DM / 212A42 / 46S20. At Clifton, for steel to be considered AR400, the plate must measure between 360 and 440 BHN. seawolf matte hft602s3 (ar400) fft600s3 (ar500) *rich black matte pfb706s4 (ar400) ffb602s2 (ar500) interstate green matte hfg600s4 (ar400) ffg601s3 (ar500) brick red matte hfr603s3. e. The rules are simple, name the cation first and the anion second, giving the anion the -ide suffix. Mangalloy, also called manganese steel or Hadfield steel, is an alloy steel containing an average of around 13% manganese. The real cost of abrasion-resistant steels (AR400, AR500) can be over 50% higher than Ultra-Met. High Strength Steels. D. The use of low carbon steel is limited due to its low strength. A709 is a high-strength, low-alloy steel plate. P. Workwear™ 14 (11-14% Manganese) Wear Plate & Wear Bar; Close; Chrome Bars. AR400 is a specialty steel, meant to be incredibly tough and incredibly abrasion resistant, but actual hardness wasn't a top. The use of low carbon steel is limited due to its low strength. Thus the welding always needs to be done in the softened state. This grade offers intermediate strength. The right filler metal and proper preheating can help reduce crack sensitivity with AR plate. 9mm FMJ was 5. 1-800-745-3962. 4140 is a great basic chemistry that is easily modified at the steel mill by use of additional elements to achieve additional, and/or, specific properties for specific industries or jobs. The tensile strength of A514 alloy steel is specified as at least 100 ksi (689 MPa) up to a 2. Abrasion resistant steel is produced to a special carbon-manganese specification, developed specifically for applications requiring superior wear resistance, and will usually outlast ordinary steel grades by a wide margin. For example, ENDURA AR 430 has an initial hardness of 430 BHN but, as it withstands impacts, it will harden up to 560 BHN. Summary. AR stands for Abrasion Resistant and will come in designations like AR400 or AR500 and usually offered as-rolled versus normalized (AR 200, 235 and 600 are also. 3 per kilowatt-hour (kWh), while lithium nickel cobalt manganese oxide (NCM) has a slightly lower price point at $112. 59. P. If welding Manganese to Manganese: Use Covered Electrodes (AWS A5. Mirro-Krome 60® (I. General Info About A656. 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. Bar Fabrication Services; Plate Fabrication Services; Close; Technical Data. They also contain 0. Q&T Plate Grade. Welding to be avoided. thickness equation balances out; AR400 was substantially cheaper than AR500 in the same plate thickness last I bought some. Clifton Steel Knowledge Center - Your source for today's most accurate information on AR Steel, Manganese Steel, Armor Plate, AR400, AR500, A514 & more! AR400 Steel vs. Since it’s an extremely durable and long. The composition may vary from heat to heat, depending on what kind of scrap that happens to be in the hopper. 5. Reduce dead weight and increase capacity with overlay. 15-0. They only contain small amounts of elements other than carbon and iron. Another difference between AR500 and mild steel is their hardness. ) Shaft; Mirraloy® HCP (C. A common carburizing method of AISI SAE 8620 steel is to heat up to 925 °C (1700 °F) at a potential of 0. As with other abrasion-resistant steels, it does not have defined chemistry, but rather, the grade is determined based on hardness. AR400 contains many of the same elements as other tool steel, according to Baldwin International, a company that makes a steel based on AR400. 20 Molybdenum (Mo): 0. Stick: If you Google TriCon Tri-Braze, it will bring up the data sheets on the chemistry composition and recommended welding proceedures. 15-0. AR400 steel falls between 360 BHN and 440 BHN, whereas AR500 steel falls between 477 BHN and 550 BHN on the Brinell Scale. You will have to look at the MTR (Material Test Report) from the producing mill to verify the actual properties of the metal you are trying to bend. 6% carbon), and High carbon steel (more than 0. H. Re: My dumb question for the day AR 400 vs mild. Metals - Specific Heats Specific heat of commonly used metals like aluminum, iron, mercury and many more - imperial and SI units. For example, ENDURA AR 430 has an initial hardness of 430 BHN but, as it withstands impacts, it will harden up to 560 BHN. 75″ can be cold bent to minimum inside bend radius of 1.