85 g/cm^3 2. B) Difference in Properties. com. 00 Mm To 16. ø6mm - ø80mm . AISI 4140. 4140 Steel Round Bar: Diameter 8mm – 3000mm AISI 4140 Steel Plate: Thickness 10mm – 1500mm x Width 200mm – 3000mm 4140 Steel Grade Square: 20mm – 500mm Surface Finish: Black, Rough Machined, Turned or as per given. SAE 4140 QT Round Bar Supplier. Sizes we manufacture : 55mm, 63mm, 75mm. 75 mm. Must view AISI 4140 Square/ Flat/ Bright Bar Price List. We can provide you with free cutting steel both in the black and bright cold drawn bar form. 1 product available. 20mm & above SAE 4140 Bright Hex Bar. +91 9833226604. 76 73. 1/16″ AS Triangle Bar. Must view AISI 4140 Square/ Flat/ Bright Bar Price List. We are Stockholder & Distributors of ASTM A311, ASTM A311M Grade-1141, Grade-1144, 226M44, 44SMn28, AISI 1144, SAE 1144 Cold Drawn Stress Relieved Bright Bars, Rods, Round Bars, Hex Bars, Hexagon Bars, Hexagonal Bars, Square Bars, Rectangular Bars, Flat. We are a prominent name in manufacturing and. Super Metal Manufacturing Co. It specifies standards for Hot Rolled Medium and High Tensile Structural Steel. Us $650-900 / ton ( fob price) 27c15 alloy steel round bar. We provide AISI 1018 round bars different shapes like a round, hexagonal, square, rectangle- special in the shafting in grades, sizes, and lengths. High-Strength. Over 18mm would require a pre-heat of 100°C (212°F) in order to prevent cracking. Axles, Nuts and Bolts. 375 IN Square 4140 ALLOY Cold Finished, Annealed, 120. , Canada, Mexico, U. AISI 4340 material comes under alloy steel of grades of steel. AISI 4140. Various Types of Alloy Steel Round Bar. And EN19 steel grade is similar to the 709M40 grade in the new version. AISI 4140 is a chromium alloy steel, Alloy Steel 4140 Round bar, Alloy Steel Grade 4140, AS AISI-SAE 4140 Square Bar, alloy steel AISI 4140 materials, Grade 4140 Alloy Steel Square Bar, Buy 4140 Alloy Steel Round Bar Manufacturer ion Mumbai, India. EN24. This steel has good tensile strength. K, Singapore, and Shanghai. As bright bars manufacturer, we. Leading Manufacturer of MS Bright Hex Bar, EN8 Bright Flat Bars, EN8 Bright Hex Bars, MS Bright Flat Bars, EN8 Bright Square Bars and EN19 MS Bright Square Bars from Mumbai. Length: 3,000-10,000mm. Strength Test, Impact Test, Brinell Hardness Test, Fracture Toughness, and Durability Tests are the tests that are performed by us on 12L14. Lengths (m) Cold drawn Round 3. EN1A Leaded (Pb) Hexagons Black from 23. Customers calling for 41 A350 LF3. 37/ Kilogram. Dhand Steels is our go-to bright bar manufacturer for Agri hardware. 4140 Round Bar is a 1% chromium – molybdenum medium hardenability general purpose high tensile steel – generally supplied hardened and tempered in the tensile range of 850 – 1000 Mpa (condition T). Get Best Quote. en 1a bright bar. EN16. Square. Quenching in oil or water after heating to this temperature will harden the steel. 7225 Rods Exporter in India. Hot Die Steel Square Bar. AISI 4140 round bars steel is an Engineering Alloy Steel containing. 5mm to 52. Bright Steel Square Bar. Alloy Steel. X. Us $550-650 / ton ( fob price) A 182 f-91 alloy steel round bar. Suitable for gears, shafts, spindles, etc. Hardness Range (Bhn): 288-321 max. SAE 1018 carbon steel is a free machining grade that is the most commonly available grade around the world. EN24, AISI 4340, AISI 4140 ; Ball Bearing Steel-> EN31, AISI 52100 ; Spring Steel-> EN47,EN45A ; Case Hardening Steel-> EN36,EN353, SAE 8620, 16/20MNCR5, AISI. Size ranges from: <35mm diameter -. 42CrMo4 steel bright bar is an engineering alloy steel containing chromium and molybdenum. Us $266-760 / ton ( fob price) 40mn forged steel Black Bars. We are supplier of RCS in bar form to a. Material Certificate with Traceable Lot Number. Multipurpose 4140 Alloy Steel Rods. 0-560. SAE 4140 grade is a low-alloy steel including chromium and molybdenum as strengthening elements which has good strength and toughness, ductility,weldability and machinability. EN19 steel bright round bar is an engineering alloy steel containing chromium and molybdenum. EN353. Chrome: 19. com. ASTM SA-36 Steel Square Distributors, ASTM SA-36 Steel Flat Bar, ASTM SA-36 Steel Companies Near me. It specifies standards for Hot Rolled Medium and High Tensile Structural Steel. SAE 4140 Round bars Suppliers, Stockists, Wholesalers and end users. 5mm-500mm (Customized size is acceptable) Alloy Steel Round Bars Length. Finish: EPQ / Mirror. EN19A. 7225 Round Bars, Alloy Steel AISI 4140 Rods, Alloy AISI 4130 Forged Bars, IS-42CrMo4 Hot Rolled Round Bars in India. We manufacture Round Bars conforming to IS2062 Grade E250A from sizes 25mm to 80mm. Range – 3. SAE 4140 alloy steel is usually supplied with ready heat treated to. SAE 4340. 7225 18crnimo7-6 42CrMo4 En8 En19 En24 SAE AISI 1020 1035 1045 8620 4340 4130 4140 Forged Steel Round Square Bars US $600-1,000 / Ton SAE 1020 S20c Ss440 A36 Q235 1045 S45c C45 4140 En19 Scm440 40cr B7 42CrMo4 12L14 1215 1144 Cold Finished Cold Drawn Bright Steel Round Bar Steel BarFind here Cold Drawn Bright Bar, Cold Drawn Round Bars manufacturers, suppliers & exporters in India. Grades. ASTM A182 Alloy Steel Round Bar, Alloy Steel F91 A182 Round Bars, Alloy Steel Gr F91 Hexagon Bar Dealers, Alloy Steel Gr. It is also suitable for induction hardening with a minimum hardness of 52HRC. Length: 2,000-8,000mm. Grade Introduction: En8D Carbon Steel Round Bar are precisely manufactured by our knowledgeable professionals using latest technology and the superior quality of carbon steel available in the market. The steel gains hardness and strength with heat treatment when the carbon percentage content increases; however its ductility is reduced. Established in the year 1974, we ‘Dhand Steels’ are a distinguished bright bars manufacturer in Maharashtra. 7225 Round Bar, EN 10083-3 42CrMo4 Bar, SAE-4140 Round Bar, ASTM A29 4140 Round Bar, UNS G41400 , SAE 4140. AISI 4140. Ambhe round corner square bars have a uniform internal structure and a very good surface quality – absolute requirements when producing drop forged parts. 16MnCr5. Get Bright Bar at lowest price | ID: 22204135697Super Metal Manufacturing Co. 500mm Alloy Steel T-Bar. Flat: 76. 40 Manganese 0. Machine parts such as screws, nuts and bolts, etc are manufactured from H11 Round Bar. Length Tolerances for Bright Bars Mill lengths (3. Main Carbon Steel Grades. 10 Chromium 0. Sweta Impex - Offering low price Sae 8620 Bright Bars in DARUKHANA, Mumbai with product details & company information. AISI 4140 is a 1% Cr-Mo through hardening steel, used particularly where strength and impact toughness is required. R. 3 1 1 " 0. Specifications: Dia: 6mm - 250 mm. It provides shock-resisting properties and is wear-resistant as well, and it always provides very good ductility. Characterised by excellent weldability, very good machinability with reasonable strength and very good ductility. 16MnCr5. SAE 52100 is equivalent to DIN 100Cr6, GB GCr15 steel. Our bright square bars ‘ quality makes them a preferred choice of various leading industries that demand high dimensional accuracy and perfection. Chemical composition and mechanical. Various Types of Alloy Steel Round Bar. C-60 Grade Introduction: C60 carbon steel is an unalloyed medium carbon engineering steel that has 0. SAE 4140 alloy steel is usually supplied with ready heat treated to hardness in 18-22 HRC. AISI 4140 Alloy Steel Round Bars & Rods Specification : Standard : AISI 4140/ DIN 1. We can supply in diameters, squares, and flats from stock. EN32B is low tensile steel suited for lightly stressed components. 00 / Ton 1 Ton (MOQ) Metline Industries is a full line distributor, manufacturer and supplier of EN19, AISI 4140, SAE 4140, 42CrMo4, 42CrMoS4, Din 1. 5mm. WALDUN is one of the best SAE4140 Steel bar manufacturers and suppliers in China, can supplied with round rods,square/flat bars,rollers,shafts,blocks and forging pieces. 7225 Round Bar, A29 4130 Bar, SAE-4140 Round Bar, AISI 4130 Round Bar, 25CrMo4, 42CrMo4 SCM430, SCM440. Buy Online AISI/SAE 4130/4140/4340 Carbon Steel Round Bar at dealer price in India. We also have BIS certification to manufacture rounds for boilers. com +91-9819909072SAE 4140 Round Bar Heat Treatment. 4140 Bars, AISI 4140 Low Carbon Steel Square Bar, 4140 Bright Bar, AISI 4140 Round Bar, SAE 4140 Round Bars, AISI 4140 Hex Bars, AISI 4140 Round Bar Supplier in Mumbai, India. Chemical composition and mechanical properties provided. Product Description. We manufacture Round Bars conforming to IS2062 Grade E250A from sizes 25mm to 80mm. These EN19 square bars can be annealed, quenched, or tempered. 6000. SAE 4140 alloy steel bar, plate, and square can be hardened by cold working, or heating and quenching. Steel. Unit- II : 3746/8, Street Number 13, Shimlapuri, Ludhiana, Punjab 141003. We supply SAE 1137 forged bars and SAE 1137 bright bars of premium quality. IS 1018, IS 1015, SAE 1541, SAE 4140, EN 8, EN 9, EN 42, EN 19, EN 1a: Usage/Application: Construction: Usage: Construction, Manufacturing: Weight: 0. 75 1. These are made up of various metal alloys that are corrosion resistant and strong. EN8M carbon steel (212M36) is a through hardening carbon manganese free-cutting steel, usually supplied untreated. EN19 steel bright round bar also known as AMERICAN SAE 4140 round bar. Most applications can replace each other. Ms Sae 4140 Bright Bar, Steel Grade: En 8 ₹ 58/Kg. Metal Pipe. We have a lot of experience in supplying 4140 alloy steel and 4340, and enjoy helping our clients achieve the results they require with the highest standards of service. Round bar, rod, square bar, flat bar, hexagon bar, angle bar, channel bar, threaded bar. Alloy 4140 Bright Bar. AISI C45 steel is medium tensile steel supplied in the black hot rolled or normalized condition. 3mm in 1000mm. This medium carbon alloy grade is widely used for many general-purpose parts requiring high tensile strength and toughness. Suitable for induction and flame hardening. [email protected] 4140 steel bar Hardening. • We are a leading manufacturer, supplier and exporter of SAE 4140 Round Bars VD route prime quality rolled using main producer prime quality billets and blooms. 700 to 7000 mm. Cut to length if required. 0mm 4140/709M Peeled Round bar. en32b bright bar is a popular case hardening steel grade used for general engineering, en32b round bar is readily machinable and weldable in its. 7225 42CrMo4 Alloy Steel Round Bar Price per kg. Round, hexagonal and square bars can be produced by cold drawing. Stainless Steel. 17 63. 4. It is renown for its wear resistance and where high strength properties is required. Our Carbon Steel AISI 4140 Round Bars (Carbon Steel SAE 4140 Rods) has excellent strength and wear resistance, good toughness, tied in the company of superior ductility, and the capability to resist stress at high. Hollow Bar: 45/28 – 200/140mm. SAE 4140 Alloy Steel Round Bar; EN 18 Alloy Steel Round Bar; EN 24 Alloy Round Steel Bar + View All. 65. 63. 0mm 1. Hex: 19 – 75mm A/F. EN353. AISI 4140. 0mm 1. Square Bar, Flat Bar, Hollow Bar, Pipe, Rings etc ), Bright Steel Bars, Cold Drawn Steel Bars (Round, Square, Flat. Sweta Impex - Offering low price Sae 4340 Bright Bars in DARUKHANA, Mumbai with product details & company information. 0-550. Alloy Steel SAE/AISI 4140 4140 is a 1% chromium – molybdenum medium hardenability general purpose high tensile steel – generally supplied hardened and tempered in the tensile range of 850 – 1000 Mpa (condition T). After heat treatment, sae 4140 steel material can get between mechanical properties. 02 3. SAE 1018 – BRIGHT BAR Grade Introduction: SAE 1018 Bright steel bar is usually a carbon steel alloy which has had the surface condition improved by drawing, peeling or grinding over the hot rolled finish supplied by the. SAE-4130 Q&T, AISI-4140 Q&T, SAE-4145MOD, SAE-4340, SAE-8630 MODIFIED For OIL & GAS AISI 4140 Forged Quenched & Tempered, SAE4140 Forged Quenched & Tempered AISI 4340 Forged Quenched & Tempered, SAE4340 Forged Quenched & Tempered AISI 4145H MOD Q&T, AISI 4145H MODIFIED QUENCHED & TEMPERED STEEL FOR. . AISI 4140 Bright Bar Stockiest; AISI / SAE 4140 Forged Bars; ASTM A510 AISI / SAE 4140 Black Bar; Standard ASTM A510 AISI / SAE 4140 Alloy Steel Round Bar; AISI /. Bright Rounds: 22mm to 63. So if you are looking for best price of AISI/SAE 4140 alloy steel Flat bar or alloy steel aisi 4140 materials, AS AISI-SAE 4140 Square Bar near you with shortest time delivery or free sample of AS AISI-SAE 4140 Flat Bar . We supply SAE 1141 forged bars and SAE 1141 bright bars of premium quality. 0 / Ton. EN19, AISI 4140, 42CrMo4: Single Piece Length: 6 meter: Usage/Application: Manufacturing: Shape: Hexagonal: Surface Finish: Bright. wide selection in uns g41400 Hex Bar. 72284000. we are ISO 9001:2015 Certified Bright Bars Manufacturer in Maharashtra. IS2062 Forged Round Bars. Hot Working. Low alloy steel bar stock. EN16. R. EN 29B is widely used for the manufacture of components requiring superior surface finish with high production rates. SA-516-70 acc. Hardness (Brinell): 217-269 HB. Heat treatments of this alloy usually consist of annealing, hardening/austenitizing, air and oil quenching, and single or double tempering at temperatures of 840° F (450° C), 930° F (500° C), 1020° F (550° C), 1110° F (600° C),. Grade Introduction: SAE 1018 Bright steel bar is usually a carbon steel alloy which has had the surface condition improved by drawing, peeling or grinding over the hot rolled finish supplied by the steel mill. SPECIFICATIONS: GRADE ALLOY 4140, AISI 4140, UNS G41400 . Stainless Steel, Carbon Steel, Carbon Steel, Supplier in India, Check Price List. X 1. SAE ASTM AISI 4140 Hot Forged Rolled Round Bar Steel. com. Tool Die Steel Round Bar H-13; Tool Die Steel Round Bar H-11;SAE 4140; SAE 8620; SAE 52100; SCM 420; Die Steel And Tool Steel. It is usually supplied in as rolled condition but can. AISI SAE 4140 alloy steel can be made. 42CrMo4 steel bright bar is an engineering alloy steel containing chromium and molybdenum. Alloy Steel SAE 4140 Bars available in Shapes like. Buy AISI 4340 online from National Steel Industries. 1984 was the year, when we, Sweta Impex stepped into the market as a Manufacturers, Suppliers, Exporters and Importer of Bright Bars, Carbon Steel Round Bars, Finished Bright Bar Bundles, Peeled Bright Round. RATNAM STEEL is one of the largest exporter, and supplier of CS AISI-SAE 4140 Round Bars, AISI-SAE 4140 Bright Bar, AISI-SAE 4140 Hex and Flat Bar, AISI-SAE 4140 Round bar Price $3400/Ton. EN8 is suitable for all round engineering purposes that may require a Steel of greater strength. To produce flawless range, we have employed a highly creative team of professionals who have immense experience in the industry. Straightness. SAE-4140 Round Bright Bar. Specifications Met: ASTM A519. We provide an efficient service with knowledge of our steel grades and specifications. 4 Finish, Matt Finish, BA Finish: Equivalent Grade. EN19 Round Bars. 10mm Alloy Steel Precistion Stock. Select from one of the available shapes below to get. 3mm 2. If further heat treatment is required, then heat to 840 ℃ – 875 ℃, hold until temperature is uniform throughout the section, soak for. EN8M carbon steel is a free-machining grade and is readily machinable in any condition. Steel Bright Bar or Cold Drawn Steel. SPECIFICATIONS: GRADE ALLOY 4140, AISI 4140, UNS G41400 . Bright Bars offered to find application in areas like Machined Components, Dairy Equipment, Pump. After quenching and. 17mm to 350mm dia. VSP Converted Rounds . SAE 4150. The exact composition may vary depending on the manufacturing process and the specific requirements of the application. ), spindles (lathe spindles, milling. Bundle weight 2 tons to 4tons. K, Singapore, and Shanghai. c20 / AISI SAE 1020 Round bars can be provided in Standard Lengths or as per cut length required by you. AISI 4145H APPLICATION. SAE 1040(EN8), SAE 4140(EN19), SAE 4340(EN24), Grade C45 Round Bars; SAE 1040 (EN8) Hexagonal Bars and Square Bars; Brass Round Bars and Hexagonal Bars; Bronze Hollow and Solid Bars; Grade 8. It has characteristics similar to that of C55 carbon steel which has high hardness and high strength after hardening. Tempering should be followed immediately after. SAE 1020 S20c Ss440 A36 Q235 1045 S45c C45 4140 En19 Scm440 40cr B7 42CrMo4 12L14 1215 1144 Cold Finished Cold Drawn Bright Steel Round Bar Steel Bar US$600. Square bar. We can manufacture any size within our size range provided the requirement is regular. 7 atlas 6582: through–hardening low alloy steel bar 43 4. The material retains a remarkable degree of toughness. The grade is a nickel chromium molybdenum combination – this offers high tensile steel strength, with good ductility and wear resistance characteristics. Super Metal Manufacturing Co. USA AISI/SAE 4140 ASTM A29/A29M – 91 4140 UNS G41400 Chemical Composition* Min. 9 atlas 6580: through–hardening low alloy. Steel House India stock complete range of AISI-SAE 4340 Hex Bar, AISI-SAE 4340 Bright Bar in Stock in various sizes. SA516/516M Grade 60/70 Normalized & Impact Tested for Low Temperature Service. Its chemical composition is seen to the right: AISI/SAE 4140 grade is a versatile alloy with good. EN28. Square Bar: AISI / SAE 4340 Alloy Square Bars: UNS G43400. Check dimension table of UNS G41300 Square Bar, Buy Carbon Steel AISI 1045 Bright Bar at factory price. C20 / AISI SAE 1020 HOT ROLLED SQUARE BARS - 10MM SQR TO 200MM SQR. No. Navstar Steel is a leading supplier and manufacturer of these Alloy Steel Round Bar products. SAE-4140 - Bright Bar: 42CRMO4 - Bright Bar: SAE-1010 - Bright Bar: EN9 - Bright Bar: 16MNCR5 - Bright Bar: 20MNCR5 - Bright Bar: EN31 - Bright Bar:. 6 atlas 4140: through–hardening low alloy steel bar 40 4. 7225 steel bars in all standard sizes and finishes. R. Steel AISI 4140 Hollow Round Bar 250mm O. hot rolled high quality carbon continuous casting square steel billet US $405-450 / Metric Ton. 17 63. SAE 1020 Round Steel Bright Bar. SAE8620 Flat Bright Bar. IS2062 E250 Flat Bright Bar. National Steel Industries is the leading supplier of AISI 4140 Round Bars in India. These are made up of various metal alloys that are corrosion resistant and strong. Also known as chrome-moly steel, this versatile 4140 alloy steel is used for a wide range of parts, such as gears, axles, shafts, collets, and die holders. Main Carbon Steel Grades. AISI 4130 Q&T API 6A PSL3 NACE MR-0175, AISI 4130Q&T API. Grade: 201. This bar is made in compliance with industrial quality parameters, to ensure its flawless range at users end. In addition, 4145 alloy square bar can be machined effectively while maintaining its properties at high temperatures. Get contact details & address of companies engaged in wholesale trade, manufacturing and supplying Bright Bar across India. Square: 28mm – 127mm. EN24. 5mm. SCM 420. 4 mm to 800 mm. Condition: CF, ANN. HB Wires; HHB Wires; Round Bars; Hex Bars; Square Bars;SAE-4140 - Bright Bar: 42CRMO4 - Bright Bar: SAE-1010 - Bright Bar: EN9 - Bright Bar: 16MNCR5 - Bright Bar: 20MNCR5 - Bright Bar: EN31 - Bright Bar:. Case hardening steel en353 round bar for oil & gas industry; En 47 spring steel, for automobile industry, 6 meter; Bright en41 b steel rods, for automobile industry; En9 round and flat / carbon steel / alloy steel / c55 / 07m5. US $550. Alloy Steel Round Bars Type. These 4140 Alloy Cold Rolled Round Bars reacts well to heat-treatment and is quite simple to machine in the annealed state. It is similar to 4140, which has a higher carbon level giving 4130 improved weldabilities at the expense of through-thickness strength. Alloy Steel EN19 Bars Specification. 0000 IN Length. EN36C Alloy Steel is a carburizing steel grade with very high surface strength with a soft but strong core. Die Forged Bar - SAE 4140 - AISI 4140 - Round Bar is a low alloy steel. 1 product available. EN19 round bar also known as AMERICAN SAE 4140 round bar. Feb 20 2015. Maximum square size. AISI 4140 alloy steel can be hardened by cold working, or heating and quenching. 3. Aluminium. Max. National Steel Industries is one of the most prominent suppliers of SAE 1137 Round Bars. 16MnCr5. AISI 4140. Find High Quality 4140 Square Bars Manufacturer 4140 Square Bars Suppliers and 4140 Square Bars Products at the Best Price on Alibaba. Round Cornered Square bars or RCS Steel are mainly used for drop forged components in the automotive industry. Also known as chrome-moly steel, they are used for a. Buy SAE 4130 online from National Steel Industries. SAE 4140 Bright Bar; EN 47 Spring Steel; EN 45 Bright Bar; EN18; EN 9 Bright Bar; EN15; IS 2062 E250 Bright Bar; IS 2062 E350 Bright Bar; SAE 52100 Bright Bar; 31CRV3 Bright Bar;. aisi 1018 equivalent material, aisi 1018 bar stock, aisi 1018 round bar, aisi 1018 round bar, aisi 1018 steel equivalent, aisi 1018 chemical composition, aisi 1018 equivalent indian standard, mild steel round bar grades, carbon steel aisi 1018 bright bar manufacturer in gujarat, carbon steel aisi 1018 rod price per kg in india, carbon steel. EN19 Round Bars also known as 709M40, SAE 4140 & 42CrMo4. 02 mm. This steel has good tensile strength. Bright mild steel bar Bright steel bars are carbon steel which has had the surface condition. EN28. AISI 4140 steel is annealed at 872°C followed by slowly cooling in the furnace. SAE 8620 steel has a higher core strength than grades 8615 and 8617. EN1A Leaded (Pb) Bright Bar from sizes 22mm to 63. The material can be welded if required but it needs to be done in the presence of an expert. 35 Mm. EN18 Alloy Steel Round Bars are low alloy steel grade round bars. Cell:9363331766Mechanical properties: AISI 4140 steel bar is a high-strength alloy steel that offers excellent toughness and ductility. Sail Carbon Steel C45 Bright Square Bar, For Industrial,. 5/6″ Alloy Steel Polished Round Bar. 0m): ± 250mm max. 5 to 6. , Ardeshir Dadi X Street, Mumbai - 400 004. We source our materials from reliable and certified vendors in the industry, ensuring consistent quality and performance. 5 + 6mm/m 1. In. 7225 42crmo4 Alloy Steel Round Bar Price Per Kg. Product Type: Bright Bar. Suitable for gears, shafts, spindles, etc. ₹ 64/Kg. Offering you a complete choice of products which include EN24 Steel Bright Bar, EN19 Steel Bright Bar, SAE 4140 Steel Bright Bar, Alloy Steel Hex Bright Bar and Alloy Steel Square Bright Bar. For final 42CrMo4 Hex Bar price list please mail us. SAE 4150 equivalent grade is AISI 4150 and UNS G41500. Cromo 4130 Rods has tensile strength and yield strength, where. Dark Blue (Bar End) Rounds: 8 mm to 690 mm Diameter: Hexagons: 19. 3mm 2. SAE 4340 equivalent grade is AISI 4340. 2 4 8 " 0. 650 Hardening °C 780-820 Quenching Air, Oil, Salt Bath 180-220 °C Hardness after quenching HRC 65 Hardening: O1 steels should be heated uniformly to 780-820°C (1436-1508°F) until completely heated. EN19 - Bright Bar: SAE-4140 - Bright Bar: 42CRMO4 - Bright Bar: SAE-1010 - Bright Bar: EN9 - Bright Bar: 16MNCR5 - Bright Bar: 20MNCR5 - Bright Bar: EN31 - Bright. SAE 4140 alloy steel bar, plate, and square can be hardened by cold working, or heating and quenching. 65. Steel Grade AISI 4140.