Q+T Alloy Steel Round Bar1.7225SAE4140 For Machinery

Model NO. 1.7225/SAE4140/SCM440/42CrMo Special Use Mold Steel Shapes Option ROUND/FLAT Process Tech. Hot rolled/forged Heat Treatment Annealed/Q+T Surface conditons machined/scaling/polished/bright Quality Assurance 100% UT passed Payment Terms TT/LC Delivery Time 15-20days for stock Trademark customized Transport Package Standard/Customized Specification standard/customized Origin China HS Code 7225401000

Product Description

Q+T Alloy Steel Round Bar 1.7225/SAE4140 For MachineryProduct IntroductionAISI 4140Steel Bar, Steel Plate, Flats Supplier, Stockist and Exporter.AISI SAE 4140 alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components, likeaxles, shafts, bolts, gears and other applications. Similar to alloy grade AISI 4130 chrome moly alloy steel but with a slightly higher carbon content. The higher carbon content of AISI 4140 steel gives greater strength and heat treatment capabilities in comparison to AISI / ASTM 4130 alloy steels, however it does have inferior weldability characteristics.Equal Grades(numbers)CountryUSAGermanBritishJapanChinaAustraliaStandardASTM A29DIN 17200BS 970JIS G4105GB/T 3077AS 1444Grades41401.7225/42crmo442CrMo4SCM44042CrMo4140Chemical CompositionStandardGradeCMnPSSiNiCrMoASTM A2941400.38-0.430.75-1.000.0350.0400.15-0.35-0.8-1.100.15-0.25EN 1025042CrMo4/1.72240.38-0.450.6-0.90.0350.0350.4-0.9-1.20.15-0.30JIS G4105SCM4400.38-0.430.60-0.850.030.030.15-0.35-0.9-1.20.15-0.30Mechanical PropertiesMetricImperialTensile strength655 MPa95000 psiYield strength415 MPa60200 psiBulk modulus (typical for steel)140 GPa20300 ksiShear modulus (typical for steel)80 GPa11600 ksiElastic modulus190-210 GPa27557-30458 ksiPoisson’s ratio0.27-0.300.27-0.30Elongation at break (in 50 mm)25.70%25.70%Hardness, Brinell197197Hardness, Knoop (converted from Brinell hardness)219219Hardness, Rockwell B (converted from Brinell hardness)9292Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only)1313Hardness, Vickers (converted from Brinell hardness)207207Machinability (based on AISI 1212 as 100 machinability)6565ForgingPreheat the steel carefully, heat to 1150 oC – 1200 oC maximum, hold until temperature is uniform throughout the section.Do not forge below 850 oC.Following forging operation the work piece should be cooled as slowly as possible.Heat Treatment

  • AnnealingHeat ASTM 4140 steels to 800 oC – 850 oC, hold until temperature is uniform throughout the section and cool in furnace.
  • NormalizingHeat steel alloy 4140 to 870 oC – 900 oC, hold until temperature is uniform throughout the section, soak for 10 – 15 minutes and cool in still air.
  • TemperingRe-heat 4140 grade steel to 550 oC – 700 oC as required, hold until temperature is uniform throughout the section, soak for 1 hour per 25 mm of section, and cool in still air.

Hardening AISI alloy 4140 steel bar, plate and square can be hardened by cold working, or heating and quenching.SAE 4140 alloy steel is usually supplied readyheat treatedto hardness in 18-22 HRC. If further heat treatment is required, then heat to 840 oC – 875 oC, hold until temperature is uniform throughout the section, soak for 10 – 15 minutes per 25 mm section, and quench in oil, water, or polymer as required.Application ASTM alloy 4140 steel bar, flat or plate material can be used for as wide variety of applications where greater toughness and wear resistance is needed over lower carbon grades. Typical applications for 4140tool steeluses include Components, Adapters, Arbors,strippers, holder blocks, mold bases, ejectors, back up and support tooling, fixtures, jigs, molds, cams, drill collars, Axle Shafts, Bolts, Crankshafts,stubs, couplings, reamer bodies, axles, shafting, piston rods, rams, hydraulic machinery shafts, gears, sprockets, gear racks, chain links, spindles, tool bodies, tool holders, tie rods, Connection Rods, Chuck Bodies, Collets, Conveyor Pins & Rolls, Ejector Pins, Forks, Gears, Guide Rods, Hydraulic Shafts & Parts,Lathe Spindles, Logging Parts, Milling Spindles, Motor Shafts, Nuts, Pinch Bars, Pinions, Pump Shafts,boring bars,tracks, slides, wear strips or parts, forming dies, brake dies, trim dies, bolsters, machinery parts and components, etc.Welcome customers to inquiry AISI 4140 steel bar, plate, flat steel for the 4140 steel price. We are professional supplier and exporter for more than 20 years. We offer you worldwide solution for aisi alloy 4140 steel bar.Available Sizes in StockSteelGradeDiameter(mm)Length(mm)Harness(HRC)SCM440/SAE414016,18,20,23,25,28,30,33,35,38,40,43,45,48,50, 55,60,65,70,75,80,85,90,95,100,110,120,130,140, 150,160,170,180,190,200,210,220,230,240,250,260, 270,280,290,300,310,320,330,340,350,360,370,380, 390,400,410,420,430,440,4504000-10000HB160-220More PicutresWorkshopCompany Profile:Guangzhou Changfeng Steel Co., Ltd is an export company of Baogang group in south China specialized in exporting special steel, which contains Plastic Mould Steel, Hot Work Mould Steel, Cold Work Mould Steel, Alloy Steel for Mechanical, High Speed Steel, Bearing Steel, Tool Steel, Stainless Steel, Carbon Steel, etc.We also act on behalf of exporting steels of mainly steel factories in China, including Shagang group, Wenfeng group, Xingcheng group, Dongte group, Daye and so on. We are full of ten years export experience to the market all over the word, such as America, Germany, France, Italy, Turkey, Singapore, Thailand, Malaysia, Vietnam, Taiwan, and middle-east.Guangzhou Changfeng Steel Co., Ltd has rich experience and competent elites, which enable us to offer the best service after years of development. Our company equips with large-sized vertical saw machines, horizontal saw machines, milling machines, grinding machines and other advanced equipments to provide customers with cutting and other processing services. We set up strict inspection procedures, including metallographic analysis, hardness test, ultrasonic flaw detection etc., in order to meet the standards of DIN, AISI, JIS and GB to ensure their function and quality.Our company keeps the principle of "sincerely cooperation, endless striving for perfection". We desire to establish the long-term mutual beneficial and win-win relationship with importers all over the word.Quality InspectionWarehouseOur serviceWe provide quality die & tool steel in stock for all industries.Orders of any size, any length, ship fastProvide related value-adding services :metal cutting, sizing, machining (blanking, milling, grinding), and heat treatment.Sawing for small or large quantities, sawing-to-size.Excellent customer serviceContact us for the latest price and more details NOW!

Basic Info

Model NO. 1.7225/SAE4140/SCM440/42CrMo Special Use Mold Steel Shapes Option ROUND/FLAT Process Tech. Hot rolled/forged Heat Treatment Annealed/Q+T Surface conditons machined/scaling/polished/bright Quality Assurance 100% UT passed Payment Terms TT/LC Delivery Time 15-20days for stock Trademark customized Transport Package Standard/Customized Specification standard/customized Origin China HS Code 7225401000

Product Description

Customer Question & Answer Ask something for more details (0)

Q+T Alloy Steel Round Bar 1.7225/SAE4140 For MachineryProduct IntroductionAISI 4140Steel Bar, Steel Plate, Flats Supplier, Stockist and Exporter.AISI SAE 4140 alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components, likeaxles, shafts, bolts, gears and other applications. Similar to alloy grade AISI 4130 chrome moly alloy steel but with a slightly higher carbon content. The higher carbon content of AISI 4140 steel gives greater strength and heat treatment capabilities in comparison to AISI / ASTM 4130 alloy steels, however it does have inferior weldability characteristics.Equal Grades(numbers)CountryUSAGermanBritishJapanChinaAustraliaStandardASTM A29DIN 17200BS 970JIS G4105GB/T 3077AS 1444Grades41401.7225/42crmo442CrMo4SCM44042CrMo4140Chemical CompositionStandardGradeCMnPSSiNiCrMoASTM A2941400.38-0.430.75-1.000.0350.0400.15-0.35-0.8-1.100.15-0.25EN 1025042CrMo4/1.72240.38-0.450.6-0.90.0350.0350.4-0.9-1.20.15-0.30JIS G4105SCM4400.38-0.430.60-0.850.030.030.15-0.35-0.9-1.20.15-0.30Mechanical PropertiesMetricImperialTensile strength655 MPa95000 psiYield strength415 MPa60200 psiBulk modulus (typical for steel)140 GPa20300 ksiShear modulus (typical for steel)80 GPa11600 ksiElastic modulus190-210 GPa27557-30458 ksiPoisson’s ratio0.27-0.300.27-0.30Elongation at break (in 50 mm)25.70%25.70%Hardness, Brinell197197Hardness, Knoop (converted from Brinell hardness)219219Hardness, Rockwell B (converted from Brinell hardness)9292Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only)1313Hardness, Vickers (converted from Brinell hardness)207207Machinability (based on AISI 1212 as 100 machinability)6565ForgingPreheat the steel carefully, heat to 1150 oC – 1200 oC maximum, hold until temperature is uniform throughout the section.Do not forge below 850 oC.Following forging operation the work piece should be cooled as slowly as possible.Heat Treatment

  • AnnealingHeat ASTM 4140 steels to 800 oC – 850 oC, hold until temperature is uniform throughout the section and cool in furnace.
  • NormalizingHeat steel alloy 4140 to 870 oC – 900 oC, hold until temperature is uniform throughout the section, soak for 10 – 15 minutes and cool in still air.
  • TemperingRe-heat 4140 grade steel to 550 oC – 700 oC as required, hold until temperature is uniform throughout the section, soak for 1 hour per 25 mm of section, and cool in still air.

Hardening AISI alloy 4140 steel bar, plate and square can be hardened by cold working, or heating and quenching.SAE 4140 alloy steel is usually supplied readyheat treatedto hardness in 18-22 HRC. If further heat treatment is required, then heat to 840 oC – 875 oC, hold until temperature is uniform throughout the section, soak for 10 – 15 minutes per 25 mm section, and quench in oil, water, or polymer as required.Application ASTM alloy 4140 steel bar, flat or plate material can be used for as wide variety of applications where greater toughness and wear resistance is needed over lower carbon grades. Typical applications for 4140tool steeluses include Components, Adapters, Arbors,strippers, holder blocks, mold bases, ejectors, back up and support tooling, fixtures, jigs, molds, cams, drill collars, Axle Shafts, Bolts, Crankshafts,stubs, couplings, reamer bodies, axles, shafting, piston rods, rams, hydraulic machinery shafts, gears, sprockets, gear racks, chain links, spindles, tool bodies, tool holders, tie rods, Connection Rods, Chuck Bodies, Collets, Conveyor Pins & Rolls, Ejector Pins, Forks, Gears, Guide Rods, Hydraulic Shafts & Parts,Lathe Spindles, Logging Parts, Milling Spindles, Motor Shafts, Nuts, Pinch Bars, Pinions, Pump Shafts,boring bars,tracks, slides, wear strips or parts, forming dies, brake dies, trim dies, bolsters, machinery parts and components, etc.Welcome customers to inquiry AISI 4140 steel bar, plate, flat steel for the 4140 steel price. We are professional supplier and exporter for more than 20 years. We offer you worldwide solution for aisi alloy 4140 steel bar.Available Sizes in StockSteelGradeDiameter(mm)Length(mm)Harness(HRC)SCM440/SAE414016,18,20,23,25,28,30,33,35,38,40,43,45,48,50, 55,60,65,70,75,80,85,90,95,100,110,120,130,140, 150,160,170,180,190,200,210,220,230,240,250,260, 270,280,290,300,310,320,330,340,350,360,370,380, 390,400,410,420,430,440,4504000-10000HB160-220More PicutresWorkshopCompany Profile:Guangzhou Changfeng Steel Co., Ltd is an export company of Baogang group in south China specialized in exporting special steel, which contains Plastic Mould Steel, Hot Work Mould Steel, Cold Work Mould Steel, Alloy Steel for Mechanical, High Speed Steel, Bearing Steel, Tool Steel, Stainless Steel, Carbon Steel, etc.We also act on behalf of exporting steels of mainly steel factories in China, including Shagang group, Wenfeng group, Xingcheng group, Dongte group, Daye and so on. We are full of ten years export experience to the market all over the word, such as America, Germany, France, Italy, Turkey, Singapore, Thailand, Malaysia, Vietnam, Taiwan, and middle-east.Guangzhou Changfeng Steel Co., Ltd has rich experience and competent elites, which enable us to offer the best service after years of development. Our company equips with large-sized vertical saw machines, horizontal saw machines, milling machines, grinding machines and other advanced equipments to provide customers with cutting and other processing services. We set up strict inspection procedures, including metallographic analysis, hardness test, ultrasonic flaw detection etc., in order to meet the standards of DIN, AISI, JIS and GB to ensure their function and quality.Our company keeps the principle of "sincerely cooperation, endless striving for perfection". We desire to establish the long-term mutual beneficial and win-win relationship with importers all over the word.Quality InspectionWarehouseOur serviceWe provide quality die & tool steel in stock for all industries.Orders of any size, any length, ship fastProvide related value-adding services :metal cutting, sizing, machining (blanking, milling, grinding), and heat treatment.Sawing for small or large quantities, sawing-to-size.Excellent customer serviceContact us for the latest price and more details NOW!