; Our fleet of over 300 trucks provide next day delivery for all your metals needs. 150” Speed 70 fpm Feed . 005" per flute load with spade drills might require a pilot hole. Request a FREE quote for A514 Steel Plate. The addition of Mn and Si will increase the over temperature sensitivity of steel. High-Strength 1045 Carbon Steel Sheets and Bars. A514 Steel. 3:33. High productivity & Low cost. Had to put two 5/8" holes in each cell to shoot foam in to fill annular space. General Info About AR450 / AR450F. 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. What is t1 steel? ASTM A514 steel plate, also known as T-1 steel plate, is a popular grade of quenched and tempered (Q) steel that offers high strength, weldability and machinability. Mangalloy, also called manganese steel or Hadfield steel, is an alloy steel containing an average of around 13% manganese. Now answer the question. steels or regular D2 tool steel? Thanks in advance, Robert. . AR400F. In order for us to. Its machinability under cold drawing or normalizing treatment is obviously improved. . Because of this material’s high yield strength it is ideal for projects requiring a light weight steel without sacrificing durability or toughness. 96” x 480”. The nickel and molybdenum content gives AR400 carbon steel the ability to resist wear better than all other carbon steel. AR450 steel is a high-carbon steel alloy that has a surface hardness between 400-477 BHN. Summary – Machinability Rate 40-80%. Hardox ® 450 has a solid reputation as a highly versatile, abrasion-resistant steel that also has structural properties. 05-23-2010, 11:38 AM. Drilling machining alloy AR 400 AR600 AR500 AR450 AR400 wear resistant steel plate 4x8 price per ton AR400 flat bar cost $650. Grade 70 has the highest tensile strength of them all, between 485 – 625 MPa. Re: AR500 vs AR400 Steel?? AR400 = Holes at less than 300 yards. g. First, the plate is heated to a high temperature – between 1,000 and 1,300 degrees – then rapidly cooled. Joined Dec 28, 2004 Location uk. Details. Excellent resistance to both impact and sliding abrasion at a moderate cost. 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. Discover our steel range. AR400 + AR500 abrasion resistant plate, bar & strips. Iron (Fe) is the basic element that appears in almost all hardfacing products: it is referred to as steel when it is combined with small amounts of carbon. #3. In order to prevent the influence of high temperature steel plate hardness, generally laser cutting or waterjet cutting is selected when processing materials such as AR400 steel plates. Reskinned some areas wit AR400. Branches featuring A514 Steel Plate products. AR400 steel has a range of 360–440 BHN (Brinell Hardness Number), making it exceedingly proof against abrasion and wear. This material is an Abrasion Resistant, Thru-Hardened, Alloy Wear Plate. A514 T1 steel plate is a good candidate for some processing techniques, including welding. Low carbon 1018 steel comes in a variety of forms,. AR500F exhibits an optimal combination of hardness, abrasion resistance, formability, and weldability. Stronger than low-carbon steel with equally good machinability, 1045 carbon steel is widely used for bolts, studs, and shafts. Welding, bending and machining Recommendations can be found in SSAB’s brochures at. AR600 steel is a durable high-carbon alloy steel with excellent strength that’s supplied nationwide across our 40+ branches. AR400F exhibits an optimal combination of hardness, abrasion resistance, formability, and weldability. This material is characterized by a smooth, dark scale finish with a hardened surface. Menu. High-Strength 1084 High-Carbon. ASTM A514 is the standard specification for high yield, quenched and tempered alloy steel plate, suitable for welding. General Info About AR450 / AR450F. There are numerous uses for AR400, including the following: Serving as liners for large and heavy-duty machinery. Other types of steel plate offer benefits for structure and construction applications, resistance to abrasion, and the ability to withstand high temperatures and pressures. The strength of the 2" AR400 is a fair bump up from T-1. A514 is a particular type of high strength steel, which is quenched and tempered alloy steel, with a yield strength of 100,000 psi (100 ksi or approximately 700 MPa). Carbon Steel Supplier - AISI 1144 and 1045 steel offered in a variety of. We have warehouses in IL/CA/IN/OK/OH with large on-hand. Have a look at our machinability rating graph which without a doubt will make your decision a lot easier with its incredibly detailed information. Bhn 400 Abrasion Resistant Wear Ar Steel Plates. Request a Quote. 001-. Can you shoot AR400. When one end wears out, turn the tool around for a sharp edge. AR400 is “thru-hardened”, abrasion resistant, alloy wear plate. Tap-Tap. 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. Powder Coating. Wear-Resistant AR400 Carbon Steel The nickel and molybdenum content gives AR400 carbon steel the ability to. 75 inch. Stocking inventory includes 48″ x 96″ up to 96″ x 288″. 5t can be used when bending parallel to the roll. AARONT Stainless. But that capability isn’t without its drawbacks. USA Quality Runser Custom Machining Thumb: This thumb is composed of two ¾” thick AR400 steel tines. All our AR400, AR450 and AR500 have additional alloying elements which increase formability and enhance weldability. AR400 has a typical hardness range of 360-444 BHN, which is slightly lower than AR450. Hot Rolled Steel HRP&O HRP&O (Hot Rolled Pickled & Oiled) Long Terne Low Carbon Steels M1044 Martensite MartINsite(tm) Bartemp-M(tm) Medium Carbon Steel MIL-S-22698 Grade DH36 MIL-S-22698 Grade EH36 Music Wire Nickel Coated Steel Nickel/ Zinc Coated Steel RCQ 100 Silicon Core Iron Spring Steels Stress Proof Stressproof(tm)How to prevent magnetism on steel bars & plate. This includes different blades and buckets, heavy. It offers a wide array of benefits to be used in many industries. Near-dry machining with external mist lubrication is recommended when working in steel, drilling holes deeper than five times the hole diameter, and other applications where totally dry machining is not yet. Machining. AR400 and AR360 are quenched & tempered through hardened wear resistant grades of abrasion resistant steel plate used for high impact and abrasion. 321. ASTM A514 steel plate, also known as T-1 steel plate, is a popular grade of quenched and tempered (Q&T) steel that offers high strength, weldability and machinability. Because there are no industry guidelines or standards for wear plate, it can be any hardness at all. A quenched & tempered, through-hardened, abrasion-resistant grade of steel plate. Used by industries such as mining, forestry, quarrying, and construction. Ultra-Machinable 12L14 Carbon Steel Bars. Call or email us now for a free quote! Phone: 800. AR400 steel is prevalent in many industries that require abrasion-resistant materials, such as construction, mining, and agriculture. Use A36 for general steel fabrication, 4140 for machining, T1, AR400, AR450, Hardox 400, and Hardox 450 for screens. Alpharetta, Georgia 30004. Recommended cutting dataAR360 / AR400. Grade 316 stainless steel can resist temperatures up to 1600 degrees Fahrenheit. I use it for my pistol targets I usually get the stuff for about $. The addition of chromium to AR400 makes it more corrosion resistant as well, making it well suited for outdoor applications where weathering is a concern. This product is designed for applications that demand both wear resistance and impact toughness. 420 stainless has good machinability for a stainless steel. 0 /5 · 0 reviews · Contact Supplier. AR400 hardness: 360 minimum / 400 nominal. sfm 200, . 40 - . AR400 is a much stronger and harder steel than A36 steel. We used tons of AR400 at work, with a little AR500 thrown in. This seems extremly high, but I never heard of AR 400 Steel. Our tines will hold up too many years of wear and tear. 1675ºF (910ºC) and air cool. #1 I have a piece I need to machine and the customer told me it is AR 400. This is a high-carbon alloy steel that is perfect for rugged applications that require high wear resistance. ASTM A36 and ASTM A572 are two popular types of structural steel, as their chemical compositions and mechanical properties give these materials high strength and machinability that are ideal for structural applications. Cobalt Steel Ball End Mills with Two Milling Ends. 13 0. Ideal for horizontal machining centers or multiple pallet machining centers. 4140 steel welding, 4140 steel machining, 4150 steel properties, 316 stainless properties, ar400 properties, ar500 properties. Materials such as AR400 and AR500 can be tricky to work with, and many grinding and machining shops do not have the expertise or equipment to work with these rigid materials. 5 mm) thick plate, and at least 110 ksi (758. Ar/Hb 400 Wear Resistant Steel Plate. The steel is inside Earth's magnetic field. Good formability and weldability are also characteristic. Chat now. 4. Wear-Resistant AR400 Carbon Steel. AR400 is a much stronger and harder steel than A36 steel. 3/4″ to 4″ Widths. All material is provided in a cold finished & annealed condition. However, they differ in terms of hardness. View in full-text. com Metal Machinability Chart. Hardox 400. Cold Working. QT-100 (ASTM A514) AR400. You can find hardness levels for AR400, AR450, and AR500 on their respective pages. A514 ≤ 2. 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. It can be readily cold formed. USA Quality Runser Custom Machining Thumb: This thumb is composed of two ¾” thick AR400 steel tines. General Info About AR600 AR600 is the most durable abrasion resistant steel plate. machining. Compared to AR400, the AR450 steel plate offers more hardness without sacrificing formability and ductility. Specifications Specifications AR400 / 400F AR450 / 450F AR450 /. Available thicknesses at IWM: 1” and 2”, also, we can order in sizes up to 10” thick. Speak to an expert metallurgist today to see how we. AR400 + AR500 abrasion resistant plate, bar & strips. 001-. (THIS IS NOT RECOMMENDED). AR400 is made for improved formability with low levels of carbon and sulphur for inclusion shape control. Tricon’s unique serpentine cladding process. Many fabricators only use A36 Steel, which will wear down quickly. Louisville is a 55,000 sq. We are your Vancouver and Western Canada metal supplier for 304 stainless steel, 316 stainless steel, A36 carbon, 1018 carbon, AR400 carbon, 3003 aluminum or 6061. What is SA516 grade 70 steel? Out of the four grades—55, 60, 65, 70—that are available for this steel, grade 70 is considered the most widespread. Machinability Comparison Chart: Carbon steels: 1015: 72%: 1018: 78%: 1020: 72%: 1022: 78%: 1030: 70%: 1040: 64%: 1042: 64%: 1050: 54% AR400 / AR450 / AR500 Overview These grades are used in highly abrasive environments within the mining, cement, aggregate, and various ground engaging applications. 4-1%, the machinability rate gradually decreases. James Lederer. Abrasion resistant steel is created by quenching and tempering forged steel plates. Reduce plate thickness up to 25% vs AR 500 (ie. In order to prevent the influence of high temperature steel plate hardness, generally laser cutting or waterjet cutting is selected when processing materials such as AR400 steel plates. Our Tensamang™ steel plate has been designed with cutting and machining ease in mind. 9300. This is a high-carbon alloy steel that is perfect for rugged applications that require high wear resistance. This abrasion-resistant steel grade is ideal for parts where long-term and intense wear resistance is a top priority. Machining. AR500 | AR500F Steel Plate. It is a high carbon steel with good hardness and moderate machinability. The ASTM A514 specification is the Standard Specification for High-Yield-Strength, Quenched and Tempered Alloy Steel Plate, Suitable for Welding used in applications where Yield Strengths of ≥ 100 ksi are required for plates up to 2-1/2" thick, inclusive. Plates are given a Brinell Hardness Number, or BHN, based on their level of hardness. 9300. It is a hard, tough, wear-resistant steel which is ductile enough to permit certain machining. While grade 304 stainless steel is fine for most other applications, type 304 stainless steel is cheaper and easier to fabricate. ABREX 400, also called SUMIHARD 400, is a union of toughness and hardness, giving it the exclusivity to be used in moderate wear areas. With an extra 50 HBW hardness over AR 400 grades, it provides additional wear resistance for an extended service life. This steel is usually used in applications requiring formability and weldability. Mir50® Machining Guidelines; Close; ASC2250® LDX. A572-50. Apr 23, 2007 #7 He'd be way ahead to just buy annealed. For the thicknesses given, the AR400 should have a minimum preheat of 250 degrees F and the A514 a minimum of 125 degrees F. A military grade steel designed specifically for marine ship construction, MIL-S-22698 steel plate is used by US Navy shipbuilders for Navy vessels, from the hulls and decks, to cladding, housings, equipment platforms, bulkheads, hatches, and more. 321. WINCO-TUF 50 Quenched and Tempered, High Alloy Steel Is Intended Specifically for Applications Requiring a High Degree of Abrasion and Wear Resistance. All this returns the steel close to its original, strong, yet malleable state. 2-0. 015 inch/revolution Tooling M1, M2, T15, M33, M41, M47. US $ 680 / Ton. Typically, military grades are A36 Low-Carbon Steel, AR400 Abrasion Resistant, AR500 Abrasion Resistant, MIL-46100 Military Grade, MIL-12560 Military Grade, and MIL-46177 Military Grade. 5” to 6” thick. 18250 Miles Avenue. 010+ FPR Maximum SFMSuperior to standard AR500. 18250 Miles Avenue. Kromite® #3 (4140/4150 mod. The temperature used to heat the steel is based on the chemical composition of the product. Precipitation-Hardening. Due to its low yield strength of 36,000 PSI, Brinell hardness of 112, and higher ductility, A36 carbon steel has increased bending capabilities over C1018 carbon steel, which A36 is often compared. AR400, or AR400F steel, is a high-carbon. 11 0. It’s not an easy material to machine or weld. 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. That's in 3/8" I buy drops from a guy that fixes garbage trucks and bulldozer blades. Ford Steel is a leading supplier of Wearalloy AR500 hardened steel. A710 has good machinability. A quenched & tempered, high-strength, weldable steel plate utilized in structural applications. Whereas 400 can be between 360 and 440 Brinell, 500 is between 477 and 550. It can be then quenched rapidly. AR400, or AR400F steel, is a high-carbon. Forming. A514 T1 steel plate provides a high yield strength of 100 ksi min. Good luck Matt 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. Properties of AR400 Steel Plate. 1/8″ to 1″ Thicknesses. 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. 18250 Miles Avenue. Hey guys, im relativeley new to oxy propane cutting, im using a Torchmate table and ive gotten great cuts on pretty much all thickneses of mild steel. Our Wearalloy 500 products are used in a wide variety of applications, and our team is readily available to help provide a proven solution to your specific wear problem. 85%, and a chromium content of 5%. 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. 787” 4t (use 18t bottom die opening) ** The radii listed are the minimum recommended for bending. Normalizing. Applications include truck & trailer frames, heavy construction equipment, and crane booms. MIL-A-46100 is a high-hardness armor (HHA) plate that has been approved for use by the Materials Technology Laboratory. The main differences are hardness and strength, achieved through varying levels of carbon and manganese. Wear patterns for hardfacing earth-moving shovel buckets & teeth (for working primarily inCall or Email Us For a Free Quote. This allowed for reliable performance both in the workshop and in operation. Up to . 010+ FPR Maximum SFM . It's often used as wear strips, liners, and deflector plates. • When using more than 5XD drill ratio, reduce cutting parameters by 10%. In carbon steel, the carbon content is King. 4140 steel properties. Too small of a grapple, and I will tear it apart. AR500 is slightly stronger (in terms of tensile strength) than 400, by about 20-25%. The wear resistance of AR400 wear resistant steel plate is 15-20 times of that of ordinary steel plate, 5-10 times of that of low alloy steel plate, and 2-5 times of that of high chromium cast iron. AR400 / 400F Abrasion Resistant Steel Plate Leeco ® Steel stocks and supplies large quantities of AR400 steel plate, which combines surface hardness with formability. Grades A and B both have good material machinability. 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. Taking the Difficulty Out of Working with Abrasion Resistant Steel for Auger FlightMonday, August 15, 2016. Largest Manufacturing Technology Community on the Web. BHN = Brinell Hardness Number. The steel’s rigidity and high abrasion resistance actually make it an ideal candidate for roll forming and AR500 can be cold rolled if you keep the bend axis transverse to the rolling direction. US $700-1100 / Metric Ton. Super-C™ is a chromium carbide overlay, wear-resistant plate with a mild steel base for weldability. AR400 is an abrasion resistant steel plate that offers outstanding wear and impact resistance. 75 thru tapped holes. 81-99. Weldability Show specs in Imperial Metric General Product Description AR400F is a through-hardened, abrasion-resistant plate with a nominal hardness of 400 HBW. AR400: 360-440 BHN This material is commonly used for bed liners, wheel loader buckets, hopper liners, and is commonly used for grinder screens. A588 steel is a structural steel. Kromite® #3 and Mirraloy® TGP Machining Guidelines;need a little help feeds/speeds in ar400. +353 (0)91 790044 Strength & Innovation since 1888 ☰. While AR450 steel is similar to AR400 and AR500, there are some variances that make each unique. Combination Plasma Cutting & Machining System; Plasma & Oxy-Fuel Cutting; Plasma. According to the charts, cutting speed of T1 is approximately 40% that of 1212, or 65 surface feet per minute. Plates in Hardox ® 400 come in thicknesses from 2 to 130. 5" wide x 20" long 1" thick AR-400 plates that need a centered slot cut completely through them 3. Your Reliable Steel Source. Drilling, countersinking, counterboring, tapping, milling, and general machining can be done with conventional equipment and carbide tools. 015 inch/revolution Tooling C6 (Cutting Fluid: Soluble. These thumbs are made to last. 12 0. From forging to machining and finishing, our Chicago based steel service. AR500 — Understanding Abrasion-Resistant Steel. It's near the upper limit of machinability with HSS tooling, and even coated carbide has a shortened life span. ASTM A516 specification covers plate of carbon steel for moderate and lower temperature use in pressure vessels. Hankev International is a specialty metal distributor and is the leading supplier of specialty steel in America. Applications. I'm using an older Hurco KMB-1 that's in. 2″ -> 1. Valast® 450 :125” - . provides consistent,. Much cheaper. Alloy & Abrasion Resistant Steel Plate. 5 mm) thick plate, and at least 110 ksi (758. 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. •. and 250 BHN O. Cleveland, Ohio 44128 U. Phone: 800. Our laser cutting machines use both fiber lasers and CO2 lasers and can cut through up to 4 inches of metal material. We supply A-514 steel for the construction industry, including earth moving and drilling equipment, truck frames and bodies, and oil rigs, among others. Understanding its characteristics will make it easier for you to determine if it's the right type of metal for your specific project. Grade 304 stainless steel is weak compared to 316. ASTM A572. Kloeckner Metals routinely stocks A633 nationwide. The nickel and molybdenum content gives AR400 carbon steel the ability to resist wear better than all other carbon steel. The nickel and molybdenum content gives AR400 carbon steel the ability to resist wear better than all other carbon steel. The AR400 steel is considered fair when it comes to machinability. It can be drilled, countersinked, counterbored, tapped, and milled with conventional equipment and carbide tools. ASTM A514 specification covers quenched and tempered alloy steel plates primarily for use in welded bridges and other structures. Up to . Welding. It can be machined in the annealed condition, but the H1150M condition will have the best results. Certificates with a traceable lot number are available for these. Suggested inside Radii for 90 degree bends for various thicknesses expressed in terms of “t” where t = material thickness. 75t (where t is the plate thickness) with the bend axis transverse to the rolling direction. US $ 805-1183 / Ton. The tensile strength of A514 alloy steel is specified as at least 100 ksi (689 MPa) up to a 2. 500 also has a higher hardness. In fabrication and construction, the composition and grade of the steel plate materials used have a tremendous effect on the end product. Thick AR400 plates are harder, and more force is required when cutting. 8500. Hardox ® 600 for superior wear resistance. 321. AR400 abrasive resistance steel plate is intended for higher, impact, wear applications where cold-bending and very good weldability is important. Machinability (Vs. The possibility of predicting the mechanical properties of HARDOX steel on the base of regression analysis was also. , 2015). AR500 Steel Plate Sizes. Typical values based on 20mm plate thickness. Joined Feb 19,. Best Wear Resistance of any abrasion resistant plate. 0005″ thick with a hardness of approximately HRc 70. H. giving it the exclusivity to be used in moderate wear areas. Ford Steel is a leading provider of AR steel plate forming services. AR235 / AR200 / AR Medium. AR500 steel plate’s advantage over other carbon-steel products is that it ranges in thickness from ½ inches to 4 inches. Low carbon steels are classified by having less than 0. Post-work annealing can be done to restore its corrosion resistance property. Supply High Quality Low Price Abrasion Resistant Steel Plate. Now answer the question. While all of these grades have slightly different chemical properties, the mechanical properties remain the same for all. bought. Tensalloy™ AR500 steel is a grade of abrasion resistant steel plate that offers outstanding wear and impact resistance. The base steel around the weld rapidly heats and cools during welding, resulting in a heat affected zone (HAZ) with high hardness. It has high machinability, good weldability and high ductility. As a result of its high toughness, good bendability and weldability, this steel can be used in structures with moderate wear. This specialized plate is designed for applications that demand both wear resistance and impact toughness. Mostly because of the inconsistency. Many fabricators only use A36 Steel, which will wear down quickly. A514 AR400 abrasion resistant steel plate is a good candidate for some processing techniques. Overview: Popular abrasion resistant steel grade that combines through-hardness with good levels of ductility and formability. . 내마모강은 균일한 경도 (hardness)를 유지하도록 처리되어 S45C 열처리 강판과 비교할 때 최소 3배 ~ 10배의 내마모 수명을 보유한 특수강입니다. US $ 650 / Ton. Plates in Hardox ® 400 come in thicknesses from 2 to 130. Both are quenched & tempered products. This grade is a high value abrasion resistant steel. The American Iron and Steel Institute has decided AISI No. Characterised by good core strength and toughness in small to medium sections with case hardness up to Rc62 when carburized, hardened and. However, while they have similar properties, there are some differences between A36 and A572 steel plate that could. Pipeline steels X65, X70, and X80 feature similar erosion-corrosion behaviour. 07 0. General Info About MIL-A-46100. 3 HRC compared to RHA at 43. A633 is high-strength alloy structural steel plate with high notch toughness. provides consistent, controlled quality so our AR400 plates perform consistently with no surprises. Like quenching and tempering, precipitation-hardening also involves two periods of re-heating and cooling steel plate. Abrasion resistant steel, available in 400/450/500 Brinell, offers enhanced wear properties. It is common for 4140 alloy steel to be supplied in either the annealed (soft) condition, or Quench & Tempered (Q & T), the hardened condition. Used when in contact with machinery or construction; rocks, sand, coal, minerals, scrap metal, etc. . Here is my contact: Mark Ermigiotti Max Wear Steel Company President 215-340-1552 Office 215-380-3812 Cell 215-340. General Info About A656. They are designed to weld quickly, looking good in appearance. The chrome plate is a minimum of . It's on an already built unit so I can't substitute another steel. This plate product is intended for use in applications where a good balance of formability, weldability,. A572 grade 50 steel plate is a high-strength, low-alloy plate, specified for bridges, higher strength structural duties, and light pressure vessel requirements. This steel plate has a high yield strength and good weldability. Certificates with a traceable lot number are available for these. . I have some 5/8" solid carbide endmills that i would like to try a trochodial tool path with, basically just for practice and to test this kind of tool path. It weights 600 pounds and according to Jeff, it will cost $2,800 plus $200 for shipping to get one for my loader bucket. Many fabricators only use A36 Steel, which will wear down quickly. Machining. The main advantage of AR400 steel is its superior durability—it can withstand much more wear than ordinary mild steel and is more resistant to corrosion.