Steel Round Bars

1.2738 Steel Application 1.The mould bases with good surface roughness. 2.It is a good choice for die carrier of the plastic mould. 3.Particularly suitable for hard (PS) and non-fragmented (ABS) parts. 4.It also is a popular material to be used to make big and complex plastic mould bases. 1.2738 Steel Characteristics 1.Has great polishing performance. 2.Has good machinability. 3.It was allowed to do the processing of nitrogen treatment. 4.It is easy to do a surface treatment. 1.2738 Steel Sheet Heat Treatment Softening Annealing The temperature of annealing is 710-740℃. The time of heat preservation depends on what is the size of it. The stand is that per 25mm of the diameter then the time must be 1 hour. Then furnace cooling after heat preservation. Stress Relieving The temperature is 600°C at the condition of annealing. And on the condition of quenching and tempering, the temperature must be 550°C. The time of heat preservation is according to the stand as the same. Then furnace cooling after heat preservation. Quenching and Tempering The temperature for preheat needs to be 500~600°C. The temperature of quenching is 840~880°C and keep it for about 30 minutes. By the way, the mold base must at the production for atmosphere to get quenching to avoid the oxidation and decarbonization happen. Then need to oil cooling. When 1.2738 steel is cooled to 50°C~70°C, take it tempering immediately. And the requirement for the time of heat preservation is the same, at least 2 hours. The temperature of tempering is 180°C/200°C/300°C/400°C/500°C/600°C; and the hardness is 52HRC/51HRC/48 HRC/46HRC/42HRC/34HRC. Hardening It can be hardening to raise the surface hardness to 50HRC. Oil cooling after the hardening. 1.2738 Steel Supply We have our own cutting and processing equipment. Specifications can be cut and customized according to your requirements. We are a professional special steel stockist and supplier with a high-quality stand for many years. As a professional 1.2738 steel supplier, please contacts us for any request. Songshun Steel always with you. Songshun Steel Dongguan Songshun Mould Steel Co., LTD which is an industrial and trading company with 3500-7000ts hydraulic forging machine. We provide a great variety of steels, competitive price with good quality and keep the large stock are over 20000 tons. E-mail:jacklu@songshunsteel.com Skype/ , Whatsapp/Wechat:+86-18269260283 Songshun Company Website: https://songshunsteel.com/ songshun , steel414043401

Minimum Order: 1 bags

Product specifications: Forged Round Bars: 60mm ~ 600mm (Diameter) Forged flats: 30~400mm(Thickness)X500~1200mm(Width) Rolled Round Bars: 60mm ~ 80mm (Diameter) Rolled flats: 10~80mm(Thickness)X50~1200mm(Width) Square Bars: According to the requirements of Customers. Formed forgings of shaft and disc types

Minimum Order: 2 barrels

55CrMnA spring steel has higher strength, plasticity and toughness, better hardenability, lower overheating sensitivity than manganese steel, lower decarburization tendency than silicon-manganese steel, and greater temper brittleness. The outstanding advantage is good hardenability. In addition, the thermal processing performance, comprehensive mechanical properties, and decarburization resistance are also good. It is used in the vehicle and tractor industries to produce leaf springs with heavy loads and high stress and coil springs with large diameters. 55CrMnA spring steel has higher strength, plasticity and toughness, better hardenability, lower overheating sensitivity than manganese steel, lower decarburization tendency than silicon-manganese steel, and greater temper brittleness. The outstanding advantage is good hardenability. In addition, the thermal processing performance, comprehensive mechanical properties, and decarburization resistance are also good. It is used in the vehicle and tractor industries to produce leaf springs with heavy loads and high stress and coil springs with large diameters. A good company is responsive to customers’ needs, builds a community, and earns brand loyalty.We always try our best to serve you to make you feel that you are earned more rather than bought.Not just about the products, is more about the service and value. Songshun specialized in Special Steel for almost 20 years. We can supply mold steel, high speed steel, alloy steel, free cutting steel and etc.Welcome your contact 24 hours a day!!! E-mail:jacklu@songshunsteel.com Skype , /Whatsapp/Wechat:+86-18269260283 Songshun Tiktok:songshunsteelfactory Songshun Facebook:Songshun Steel Songshun YouTube:SONGSHUN STEEL Songshun Company Website:https://steelpurchase.com/ http://www.songshunsteel.com/ steelpurchase , 41404340

Minimum Order: 2 barrels

In 42CrMoS4, vanadium, titanium, niobium, zirconium, etc. are strong carbide- forming elements in steel. As long as there is enough carbon, under appropriate conditions, respective carbides can be formed. The atomic state enters the solid solution; manganese, chromium, tungsten, and molybdenum are carbide- forming elements, part of which enters the solid solution in the atomic state, and the other part forms a replacement alloy cementite; aluminum, copper, nickel, cobalt, and silicon are not Elements that form carbides generally exist in solid solution in the atomic state. The main solid-state phase transformation of 42CrMoS4 steel when heated is the transformation from non-austenite phase to austenite phase, that is, the process of austenitization. The whole process is related to the diffusion of carbon. Among the alloying elements, non-carbide-forming elements reduce the activation energy of carbon in austenite and increase the speed of austenitization; while strong carbide-forming elements strongly hinder the diffusion of carbon in steel and significantly slow down the process of austenitization. process. The phase transformation of 42CrMoS4 steel during cooling refers to the decomposition of supercooled austenite, including pearlite transformation (eutectoid decomposition), bainite transformation and martensite transformation. Taking the effect of alloying elements on the isothermal transformation curve of supercooled austenite as an example, most alloying elements, except cobalt and aluminum, all play a role in slowing down the isothermal decomposition of austenite, but the effects of various elements are different. different. Non-carbide-forming elements (such as silicon, phosphorus, nickel, copper) and small amounts of carbide-forming elements (such as vanadium, titanium, molybdenum, tungsten), on the transformation of austenite to pearlite and to bainite The difference in the influence of , thus shifting the transition curve to the right. Established in 2009,Songshun Steel supplies a wide range of carbon, alloy and tool steel products, including high speed tool steel, cold work tool steel, hot work tool steel, plastic mould steel, engineering steel and machine structural steel etc. Over 10 years specialize in 4340 and 4140 steel round bars,Around 10,000 tons hot rolled or forged steel round bars in stock for fast delivery.Q+T,Annealed heat treatment and machined,peeled,polished surface can customize.After more than 10 years development and growing, Songshun Steel becomes one comprehensive special steel factory, stockist and exporter. Combined with experienced exporting team and professional technical knowledge, Songshun Steel offers both technical advice and support, as well as global professional steel solution and service. Due to satisfactory reliable quality and professional service, Songshun expands our market worldwide, such as Colombia, Chile, Spain, Turkey, Iran, Vietnam, Malaysia ,UAE, Canada, Brazil, Mexico and so on.steelpurchase41404340

Minimum Order: 1 bags

20CrMnTi is carburized steel, and carburized steel is usually low-carbon steel with a carbon content of 0.17%-0.24%. It is often used to make transmission gears in automobiles. It is a Cr Mn Ti steel among medium-hardenability carburizing steels. It has high hardenability, and especially has high low- temperature impact toughness under the condition of ensuring hardenability. 20CrMnTi surface carburizing hardening steel. Good processability, small processing deformation, good fatigue resistance. The main uses are: used for shafts, piston parts and various special parts of automobiles and aircrafts. It is a good carburizing steel with high hardenability. After carburizing and quenching, it has a hard and wear-resistant surface and a tough core. It has high low temperature impact toughness, moderate weldability, and machinability after normalizing. good. It is used to manufacture important parts with a cross-section <30mm that withstand high-speed, medium or heavy loads, impact and friction, such as gears, ring gears, gear shaft crossheads, etc. It is a substitute steel for 18CrMnTi, widely used as carburized parts, in the automobile and tractor industry, it is used for important carburized parts with a cross-section below 30mm, bearing high speed, medium or heavy load, impact and friction, such as gears, shafts and ring gears .Gear shafts. Main shafts of sliding bearings. Crossheads. Dog clutches. Worms, etc. What we do? We specialized in steel as a professional steel manufacturer and supplier, and also can give you technical advice and support for your business base on our professional technical knowledge. Because of our great and reliable quality and professional service in this field, our market is all around the world. Including Canada, Australia, Brazil, Turkey, Malaysia, Vietnam, Iran, Pakistan, UK and etc. At Songshun, we believe: You Get What You Pay for. Internationally, while someone seems to be lost in the desire to Chinese steel, others take an opposite attitude. Under the trend of economic globalization, we believe that high-quality steel is definitely not at a low price. As long as you can communicate with us with your heart, we will do our best to give you the best results. We see that as an opportunity: We’re excited to cooperate with customers from all around the world to change the impression for Chinese steel of other people. E-mail:jacklu@songshunsteel.com , Skype/Whatsapp/Wechat:+86-18269260283 Songs , hun Tiktok:songshunsteelfactory Songshun Facebook:Songshun Steel Songshun YouTube:SONGSHUN STEEL Songshun Company Website:https://steelpurchase.com/ http://www.songshunsteel.com/ steelpurchase , 41404340

Minimum Order: 1 bags

12L14 is a lead-sulfur composite free-cutting structural steel. In lead free- cutting steel, lead is distributed in the steel as tiny elemental metal particles and does not solidify in the steel. During the cutting process, strong friction occurs between the tool and the workpiece, making the lead particles in the steel molten. Precipitation, thereby playing a lubricating role to improve the cutting performance of steel, making steel chips fine, reducing tool wear, and ultimately prolonging tool life. Compared with lead- free steel, the cutting performance of lead-containing steel can be improved by 20-50%, while the mechanical properties and heat treatment performance remain basically unchanged, and it has no effect on cold and hot workability and weldability. Lead free-cutting steel has been widely used in the manufacture of precision instrument parts, auto parts, and important parts of various machinery. However, lead free-cutting steel has low contact fatigue, so it is not suitable for gears, bearings and other parts that bear heavy fatigue stress loads. 12L14 has a tendency to be replaced by it. Its cutting performance is also very good. Suitable for more severe occasions where 12L14 cannot be used. characteristic 1. Good processing performance of easy-car iron: the product has smooth cutting, excellent material, stable processing, The metallographic structure is good, the chemical composition is stable, the deviation is small, the steel is pure and clean, and it is not easy to damage the tool; It is very easy to cut on the lathe, and the tool life and production efficiency are increased by 40%; 2. Good electroplating performance: cutting is very easy; deep holes can be drilled, deep grooves can be milled, etc.; processing efficiency Compared with ordinary steel, it can be greatly improved; the electroplating performance of the product is good, it can replace copper products, and greatly reduce the product cost; 3. Easy car iron has good smoothness: the surface finish of the workpiece after turning is good; 4. Eco-friendliness of Yichetie: It complies with the EU SGS environmental certification standard and has passed the Swiss environmental certification. Products can be exported to machinery and equipment: woodworking machinery, ceramic machinery, papermaking machinery, glass machinery, food machinery, Construction machinery, plastic machinery, textile machinery, jacks, hydraulic presses, etc.; electrical product components: motor shafts, Fan shafts, sewing machine shafts, etc.; furniture: especially export metal furniture, such as tea tables, chairs, outdoor furniture; Metal utensils: garden tools, barbecue grids, screwdrivers, anti-theft locks, etc.; small hardware parts: such as guide rails, Machine keys, nuts, screws, round nails, hexagonal nails and octagonal nails and various standard parts of different specifications; automobiles, Motorcycle spare parts and so on. Songshun specialized in Special Steel for almost 20 years. We can supply mold steel, high speed steel, alloy steel, free cutting steel and etc.Welcome your contact 24 hours a day!!! E-mail:jacklu@songshunsteel.com Skype , /Whatsapp/Wechat:+86-18269260283 Songshun Tiktok:songshunsteelfactory Songshun Facebook:Songshun Steel Songshun YouTube:SONGSHUN STEEL Songshun Company Website:https://steelpurchase.com/ http://www.songshunsteel.com/ steelpurchase , 41404340

Minimum Order: 1 bags

12L14 is a free-cutting structural steel. Free-cutting steel is a kind of steel that is easy to be cut and processed (turning, milling, drawing, planing, drilling, etc.). It is also called steel for automatic machine tool processing, referred to as automatic steel. It is produced to adapt to mechanical processing automation and assembly line production. It is mainly used in the production of instruments and meters, watch parts, automobiles, machine tools and other various machines with small force and strict requirements on size and finish. It has strict requirements on dimensional accuracy and finish, but relatively low requirements on mechanical properties. Standard parts, such as gears, shafts, bolts, valves, bushings, pins, pipe joints, spring seat cushions and machine screw, plastic molding molds, surgical and dental surgical appliances, etc. 12L14 is a free-cutting structural steel. Free-cutting steel is a type of steel that is easily cut and processed (turning, milling, drawing, planing, drilling, etc.). It is also called steel for automatic machine tool processing, or automatic steel for short. It is produced to adapt to mechanical processing automation and assembly line production. This type of steel can be cut with a higher cutting speed and a deeper cutting amount, and the cutting resistance is reduced due to the easy-cutting elements added to the steel, and the cutting edge is lubricated due to the characteristics of the added element itself and the compound formed. The function of the part makes the chips easy to break and reduces wear, thereby improving the finish and precision of the processed parts, and improving the tool life and production efficiency. Established in 2009,Songshun Steel supplies a wide range of carbon, alloy and tool steel products, including high speed tool steel, cold work tool steel, hot work tool steel, plastic mould steel, engineering steel and machine structural steel etc. Over 10 years specialize in 4340 and 4140 steel round bars,Around 10,000 tons hot rolled or forged steel round bars in stock for fast delivery.Q+T,Annealed heat treatment and machined,peeled,polished surface can customize.After more than 10 years development and growing, Songshun Steel becomes one comprehensive special steel factory, stockist and exporter. Combined with experienced exporting team and professional technical knowledge, Songshun Steel offers both technical advice and support, as well as global professional steel solution and service. Due to satisfactory reliable quality and professional service, Songshun expands our market worldwide, such as Colombia, Chile, Spain, Turkey, Iran, Vietnam, Malaysia ,UAE, Canada, Brazil, Mexico and so on. steelpurchase41404340

Minimum Order: 1 bags

M42 tool steel is high-speed steel with high cobalt. And it also is called JIS SKH59 and DIN 1.3247 steel. It is mainly used for high toughness precision wear-resistant hardware cold stamping die and cutting tools. It has high toughness and hardness, could reach to 70HRC. Its hot hardness is high and easy to grind and cut. The cutting tools which are made of M42 steel can cut cast superalloys, titanium alloys, and ultra-high-strength steels. But the toughness is a little bad, the temperature should be lower during the quenching. It is used widely to manufacture high precision and complex cutting tools because of its great grinding properties. M42 Steel round bar sheet plate properties and heat treat as below. 1.3247 Steel Characteristics 1.The content of cobalt is 8% or 10% 2.Great wear resistance, hardness and hot hardness 3.Has excellent red hardness and cutting performance 4.Be used widely in industry, such as cutting tools, milling cutters and etc 5.Has high impact ductility M42 Steel Application The application is decided by M42 steel chemical composition and properties. 1.It is used to make a variety of wear-resistant, impact-resistant tools for powerful cutting. 2.It is used to produce a variety of high-hard and saw blades, drills, taps, broaches, hobs and milling cutters. 3.It is the material of advanced dies, screw dies and punches that require more toughness and complex shapes. 4.It is used for cold forging dies and deep drawing dies. For more steel product information,Please search our company(Dongguan Songshun Mould Steel Co., Ltd.) and check the official website!!! Songshun Company Website:https://steelpurchase.com/ http://www.songshunsteel.com/ songshunsteel , 41404340

Minimum Order: 2 barrels

1.6511 Steel Characteristics 1.It has great atmospheric corrosion resistance, fatigue resistance and strength. 2.Stay excellent toughness, wear resistance and fatigue strength after heat treated. 3.It is alloy steel with low carbon and high nickel. About the coating and softening for leather knife sheath, it is a great choice. 4.4340 alloy steel bar is used widely in the aerospace industry because of great strength. 1.6511 Steel Application 4340 alloy steel is used to manufacture large and medium-sized plastic molds that require high strength and toughness. And it is used for making important quality controlling parts with good toughness, high strength, and large size, such as heavy machinery and high load shafts, dia of turbine shafts is larger than 250mm, helicopter rotor shafts, turbojet turbine shafts, blades, high-load transmission parts, crankshaft fasteners, gears and etc. After nitriding, it also can be used to make important parts for special performance requirements. And it will be a great material for high strength and good plasticity parts after low-temperature tempering or isothermal quenching. 4340 Steel Round Bar Sheet Plate Heat Treatment and Process Stress Relieving For pre-hardened steel stress relieving is achieved by heating steel 4340 to between 500 to 550°C. Heat to 600 °C – 650 °C, hold until temperature is uniform throughout the section, soak for 1 hour per 25 mm section, and cool in still air. Cold Working AISI 4340 alloy steel can be cold worked using all conventional methods in the annealed condition. It has high ductility. Annealing A full anneal may be done at 844°C (1550 F) followed by controlled (furnace) cooling at a rate not faster than 10°C (50 F) per hour down to 315°C (600 F). From 315°C 600 F, it may be air cooled. Tempering AISI 4340 alloy steel should be in the heat treated or normalized and heat treated condition before tempering. The tempering temperature for depends upon the strength level desired. For strength levels in the 260 – 280 ksi range temper at 232°C (450 F). For strength in the 125 – 200 ksi range temper at 510°C (950 F). And don’t temper the 4340 steels if it is in the 220 – 260 ksi strength range as tempering can result in degradation of impact resistance for this level of strength. Tempering should be avoided if possible within the range 250 °C – 450 °C due to temper brittleness. 4340 Steel Heat Treatment AISI 4340 alloy steel is heat treated at 830°C (1525°F) followed by quenching in oil. Flame or Induction Hardening As mentioned above, pre-hardened and tempered 4340 steel bars or plates can be further surface hardened by either the flame or induction hardening methods resulting in a case hardness in excess of Rc 50. AISI 4340 steel parts should be heated as quickly as possible to the austenitic temperature range (830 °C – 860 °C) and required case depth followed by an immediate oil or water quenching, depending upon hardness required, workpiece size/shape and quenching arrangements. Following quenching to hand warm, tempering at 150°C – 200°C will reduce stresses in the case with minimal effect on its hardness. All de-carburized surface material must first be removed to ensure the best results. Nitriding Hardened and tempered 4340 alloy steel can also be nitrided, giving a surface hardness of up to Rc 60. Heat to 500°C – 530°C and hold for sufficient time (from 10 to 60 hours) to develop the depth of the case. Nitriding should be followed by slow cooling (no quench) reducing the problem of distortion. The nitrided grade 4340 materials can therefore be machined to near final size, leaving a small grinding allowance only. The tensile strength of the 4340 steel material core is usually not affected since the nitriding temperature range is generally below the original tempering temperature employed. Surface hardness achievable is 600 to 650HV. Machinability It can be machined using all conventional techniques. Machining process can be performed in the annealed or normalized and tempered conditions. Welding Welding of steel in the hardened and tempered condition (as normally supplied), is not recommended and should be avoided if at all possible, because of the danger of quench cracking, as the mechanical properties will be altered within the weld heat affected zone. If welding must be carried out, pre-heat to 200 to 300°C and maintain this while welding. Immediately after welding stress relieve at 550 to 650°C, prior to hardening and tempering. If welding in the hardened and tempered condition is really necessary, then the work piece, immediately on cooling to hand warm, should be if possible stress relieved at 15 °C below the original tempering temperature. Songshun specialized in Special Steel for almost 20 years. We can supply mold steel, high speed steel, alloy steel, free cutting steel and etc.Welcome your contact 24 hours a day!!! E-mail:jacklu@songshunsteel.com Skype , /Whatsapp/Wechat:+86-18269260283 Songshun Tiktok:mikizhuo Songshun Facebook:Songshun Steel Songshun YouTube:MiKi Zhuo Songshun Company Website:https://steelpurchase.com/ http://www.songshunsteel.com/ songshunsteel , 41404340

Minimum Order: 1 bags

1.6523 Steel Grade Equivalent Chart Country USA Germany/UK/France JAPAN ISO Standard ASTM A29 / A29M-05 EN 10263/4-2001 JIS G4053-2008 ISO 683/18-1996 Grades 4340 41NiCrMo7-3-2, 1.6511 SNCM439 36CrNiMo4 4340 Steel Chemical Composition Stand C (%) Mn (%) P (%) S (%) Si (%) Cr (%) Mo (%) Ni (%) ASTM A29 / A29M-05 0.38-0.43 0.60-0.80 ≤0.035 ≤0.040 0.15- 0.35 0.70-0.90 0.20-0.30 1.65-2.00 EN 10263/4-2001 0.38-0.44 0.60-0.90 ≤0.025 ≤0.025 ≤0.30 0.70- 0.90 0.15-0.30 1.65-2.00 JIS G4053-2008 0.36-0.43 0.60-0.90 ≤0.030 ≤0.030 0.15-0.35 0.60-1.00 0.15-0.30 1.60-2.00 ISO 683/18-1996 0.32-0.40 0.50-0.80 ≤0.035 ≤0.035 0.10-0.40 0.90-1.20 0.15-0.30 0.90-1.20 1.6511 Steel Physical Properties Properties Metric Imperial Density 7.85 g/cm³ 0.284 lb/in³ Melting Point 1427°C 2600°F 4340 Steel Mechanical Properties Properties Metric Imperial Tensile strength ＞980 MPa 142140 psi Yield strength ＞835 MPa 121110 psi Elongation at break ＞12% ＞12% Reduction of area ＞55% ＞55% Hardness ≤269HB ≤269HB chemical composition: C:0.37-0.44 Si:0.17-0.37 S:≤0.035 P:≤0.035 Mn: 0.50-0.80 Cr: 0.60-0.90 Mo: 0.15-0.25 Ni: 1.25-1.65 Heat treatment specification: Quenching at 850℃, oil cooling; tempering at 600℃, water cooling, oil cooling Brinell hardness GBW of annealed or high-temperature tempered steel is less than or equal to 269; Songshun specialized in Special Steel for almost 20 years. We can supply mold steel, high speed steel, alloy steel, free cutting steel and etc.Welcome your contact 24 hours a day!!! E-mail:jacklu@songshunsteel.com Skype , /Whatsapp/Wechat:+86-18269260283 Songshun Tiktok:mikizhuo Songshun Facebook:Songshun Steel Songshun YouTube:MiKi Zhuo Songshun Company Website:https://steelpurchase.com/ http://www.songshunsteel.com/ songshunsteel , 41404340

Minimum Order: 2 barrels

4140 Steel Product Information Steel Grade: 4140 Alloy steel Standard: AISI/ASTM/DIN/NF/JIS/GB/BS Place of Origin:Guangdong, China Brand Name:Songshun Model Number:4140/1.7225/42CrMo Technique:Hot Rolled Application:Die Steel Bar Special Use:Mold Steel Tolerance:±10% Shape:Round bars/Flat bar/Plate Delivery Time:8-14 days Heat treatment:Annealing/Q+T Processing Service:Bending, Welding, Decoiling, Cutting, Punching Technology:Hot Rolled/Forged/Clod Drawn Surface treatment:Black/Peeling/Polishing/Machined Deli , very condition:Hot rolled or forged/ Peeled or black surface/annealed or QT Test:UT100%/Elements testing Certificate:ISO/Mill certificate Service:Sample free and 24 hours online Experience:Ten years manufacturer experience Company Strength After more than ten years of development and growth, Songshun Iron and Steel has become a comprehensive special steel production enterprise, inventory enterprise and export enterprise. With an experienced export team and professional technical knowledge, Songshun Steel provides customers with technical advice and support, as well as global professional steel solutions and services. With satisfactory and reliable quality and professional services, the company's markets are all over the world, such as Colombia, Chile, Spain, Turkey, Iran, Vietnam, Malaysia, United Arab Emirates, Canada, Brazil, Mexico, etc. Welcome To Get a Quote MiKi Zhuo E-mail:jacklu@songshunsteel.com Skype/W , hatsapp/Wechat:+86-18269260283 ADD:No.4 Dongda Street, Shatou, Changan Town, Dongguan City, Guangdong Province, P.R.C China For more 4140 steel product information, please click this link: https://steelpurchase.com/4140-scm440-172 , 25-steel/ Company website: https://steelpurchase.com/ http://w , ww.songshunsteel.com/ songshunsteel41404340

Minimum Order: 2 barrels

Introduction What is AISI 5140 Steel? AISI 5140 steel also can be called JIS Scr440 and DIN 1.7035 steel.AISI 5140 steel round bar is one of the alloy steel as well as the most popular steel grades in the productions of the machine. The AISI 5140 steel price is on the medium level and it was easy to processing. After tempering and quenching, the toughness, plasticity and wearing resistance of it will get better. Steel normalizing can make the spheroidizing for the organization of steel get easier. And it will raise the machinability of the semi-finished product with the hardness less than 160HBS. Tempering it at the temperature of 550℃-570℃ which can make it get better mechanical property. And the hardenability of it is higher than S45C steel. You can check 5140 Steel chemical composition and mechanical properties as below. use 5140 This steel is quenched and tempered and used to manufacture mechanical parts that are subjected to medium load and medium speed work, such as steering knuckles of automobiles, rear axle shafts and gears, shafts, worms, spline shafts, top sleeves, etc. on machine tools; After quenching and tempering at medium temperature, it is used to manufacture parts that are subjected to high load, impact and medium speed work, such as gears, spindles, oil pump rotors, sliders, collars, etc. Low-impact and wear-resistant parts, such as worms, spindles, shafts, collars, etc., with a solid thickness of less than 25mm on the cross-section; after quenching and tempering and high-frequency surface quenching, they are used to manufacture high surface hardness and wear resistance And parts without great impact, such as gears, sleeves, shafts, main shafts, crankshafts, mandrels, pins, connecting rods, screws, nuts, intake valves, etc. In addition, this steel is suitable for the manufacture of various transmission parts for carbonitriding, such as gears and shafts with large diameters and good low temperature toughness Test How is ASTM 5140 steel tested? AISI 5140 Steel Chemical Composition Testing-Spectrometer We are sae 5140 Alloy Structural Steel for composition testing using spectrometer.The spectrometer one-time excitation of the sample to analyze its composition method is widely accepted by the public at this stage.Compared with traditional analytical methods, the advantages of spectrometers for the detection of modern steel components are fast, accurate and efficient. This method can directly inject solid samples without chemical digestion, which can reduce the human error caused by the digestion process and the constant volume process; to good quality steel. Dongguan Songshun Mould Steel Co.,LTD We are an Industrial and Trading Company with 3500,0000 hydraulic forging machine,who has about years experience in this field.We provide a great variety of steels, competitive price with good quality and keep the mass stock are over 20000 tons.Our main products are round and flat bars for alloy steel, tool steel, stainless steel, spring steel, bearing steel and etc. In those years we offer a wide range of high-quality steel for automobile manufacturing, engineering machinery, mold tooling, cutting tools manufacturing industry and also get high praise by at home and aboard clients. Songshun specialized in Special Steel for almost 20 years. We can supply mold steel, high speed steel, alloy steel, free cutting steel and etc.Welcome your contact 24 hours a day!!! E-mail:jacklu@songshunsteel.com Skype , /Whatsapp/Wechat:+86-18269260283 Songshun Tiktok:mikizhuo Songshun Facebook:Songshun Steel Songshun YouTube:MiKi Zhuo Songshun Company Website:https://steelpurchase.com/ http://www.songshunsteel.com/ songshunsteel , 41404340

Minimum Order: 2 barrels

1.4140 steel alloy round bar product details ·keyword:4140 steel alloy round bar ·Usage:It is used to manufacture forgings that require higher strength and larger quenched and tempered sections than 35CrMo steel, such as large gears for locomotive traction, supercharger transmission gears, rear axles, connecting rods and spring clips that are heavily loaded, and can also be used for Drill pipe joints and fishing tools for oil wells below 2000m, and can be used for molds of bending machines, etc. · Other Steel Types:5140 /4140 / 4340 / 4142 / 15CrMo / 6150 / 38CrMoAI / 8620 ..... ·Serve:OEM/ODM,Sample free and 24 hours online ·Delivery status:With heat treatment (normalized, annealed or high temperature tempered) or without heat treatment Goods, the delivery status should be specified in the contract 2.SAE 4140 Steel Equivalent Steel Grade  China GB steel number 42CrMo, Germany DIN steel number 42CrMo4, Germany DIN material number 1.7225, French NF standard 40CD4/42CD4, Japanese JIS standard SCM440, British BS standard 708M40/708A42/709M40, American AISI/ASTM 4140, American SAE 4140, American UNS Standard G41400 (4140 alloy structural steel, executive standard: ASTM A29/A29M-04) 3.AISI 4140 Chemical Composition C:0.38-0.45 Si:0.17-0.37 S：≤0.035 P:≤0.035 Mn:0.50-0.80 Cr:0.90-1.20 Mo:0.15-0.25 Ni:≤0.30 Cu≤0.30 4.SAE AISI 4140 steel heat treatment （1）Machinability In the annealed condition, the alloyed tool steel 1.7225 has good machinability （2）Training DIN 1.7225 steel has high ductility. It can be shaped in the annealed state using conventional techniques. More pressure or force is required to form because it is tougher than plain carbon steels. （3）Welding Alloy steel 1.7225 can be welded with all advanced techniques. However, the mechanical properties will be affected if it is welded in the heat treated condition and post-weld heat treatment should be performed. （4）Heat treatment 1.7225 tool steel is heated to 845°C (1550°F) and then oil quenched. Before hardening, it can be normalized by long heating to 913 °C (1675 °F) and then air cooling. （5）Forge It is forged at 926 to 1205 °C （6）Hot working 4140 steel can be hot worked at 816 to 1038 °C (1500 to 1900 °F). （7）Cold working 1.7225 steel can be cold worked in the annealed condition using conventional methods. （8）Glow Heat it to 800 – 850 °C, hold until the temperature is uniform throughout the section and cool in the kiln. （9）Normalize Heat the 1.7225 alloy steel to 870-900℃, hold until the temperature is uniform throughout the section, soak for 10-15 minutes, and cool in still air. （10）Cranking DIN 1.7225 steel can be tempered at 205 to 649 °C (400 to 1200 °F) depending on the desired hardness. The hardness of the steel can be increased if the tempering temperature is lower. For example, a tensile strength of 225 ksi can be achieved by annealing at 316 °C (600 °F), and a tensile strength of 130 ksi can be achieved by annealing at 538 °C (1000 °F). （11）Hardening Alloy steel according to DIN 1.7225 can be hardened by cold forming or heating and quenching. What is the application of 4140 steel? AISI 4140 steel round bar is an alloy structural steel with good strength and good comprehensive mechanical properties after heat treatment. It has good manufacturability. The maximum operating temperature is 427°C. It is used to manufacture forgings that require higher strength and larger quenched and tempered section than 35CrMo steel, and can also be used to manufacture turbine fasteners, tool bodies, dies, brake shoes, etc. Dongguan Songshun Mould Steel Co., Ltd. is an Indusrtial and trading company with 2 warehouses that manufactures good & high quality kinds of steels starting from 2012. The company provides the customized products and OEM service. What´s more, we keep the mass stock of over 20000 tons. In those years, we offer a wide range of steels to our customers from all over the world. And we enjoy high praise among them. Contact us Feel free to contact us,we are glad to serve for you. Songshun Always Open the Door for You. MiKi Zhuo Skype/Whatsapp/Wechat:+86-18269260283 A , DD:No.4 Dongda Street, Shatou, Changan Town, Dongguan City, Guangdong Province, P.R.C China For more 4140 steel product information, please click this link: https://steelpurchase.com/4140-scm440-172 , 25-steel/ songshunsteel41404340

Minimum Order: 2 barrels

1. 4140 steel is an alloy structural steel with high strength, hardenability, good toughness and small deformation during quenching.It is used to manufacture forgings that require higher strength and larger quenched and tempered section than 35CrMo steel, such as large gears for locomotive traction, supercharger transmission gears, rear axles, connecting rods and spring clips that are heavily loaded, and can also be used for Drill pipe joints and fishing tools for oil wells below 2000m. 2. 4140 Product Process Treatment Heat treatment process: Annealing annealing No.1 "760±10℃ annealing, furnace cooling to 400℃ air cooling. HB220-230 Normalize normalize No.4 860±10℃ normalizing, air-cooled. Quenching+tempering No.5 840±10℃ quenching water or oil (depending on the complexity of the product shape), tempering at 680-700 degrees. HB<217 Quenching+tempering No.6 quenching oil at 840±10℃, and then tempering at 470℃. HRC41-45 Quenching+tempering No.7 quenching oil at 840±10℃, and then tempering at 480℃. HRC35-45 Quenching+tempering No.8 Quenching oil at 850°C, and then tempering at 510°C. HRC38-42 Quenching+tempering No.9 quenching oil at 850℃, and then tempering at 500℃. HRC40-43 Quenching+tempering No.10 Quenching oil at 850℃, and then tempering at 510℃. HRC36-42 Quenching+tempering No.11 Quenching oil at 850℃, and then tempering at 560℃. HRC32-36 Quenching+tempering No.12 Oil quenching at 860°C, and then tempering at 390°C. HRC48-52 3. 4140 Product Information 1.Surface Treatment Plate: Origin Black, Orign cold rolled bright, Machined, Grinded Bar:  Origin Black, Orign cold rolled(drawn) bright, Turned, Peeled, Grinded 2.Heat treatment specification Heat treatment standard: quenching at 850℃, oil cooling; tempering at 560℃, water cooling, oil cooling; 3.Available Size: Round bar: Diameter(mm) Max 800mm; Length(mm) Max 12000mm. Plate: Thickness(mm) Max 800mm; Width(mm) Max 2300mm; Length(mm) Max 12000mm. Condition: Cold rolled(drawn)≤50mm, Hot rolled≤12-250mm, Hot forged≥50mm. 4.AISI 4140/DIN 1.7225 Introduction: AISI 4140 alloy steel is chromium, molybdenum, manganese containing low alloy steel. It has high fatigue strength, abrasion and impact resistance, toughness, and torsional strength. 5.Video Description https://steelpurchase.com/steel-video/ 4. We provide high-quality steel, ex-factory price, support customization, strong company and factory strength; welcome your inquiry and order；please contact us for quotes. MiKi Zhuo E-mail:jacklu@songshunsteel.com Skype/W , hatsapp/Wechat:+86-18269260283 ADD:No.4 Dongda Street, Shatou, Changan Town, Dongguan City, Guangdong Province, P.R.C China For more 4140 steel product information, please click this link: https://steelpurchase.com/4140-scm440-172 , 25-steel/ Company website: https://steelpurchase.com/ http://w , ww.songshunsteel.com/ songshunmoldsteel41404340 ,

Minimum Order: 3 bushels