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China, Chinese AISI Hot Rolled 4140 Alloy Steel Bars: High-Strength Solutions for Industrial Machinery Diameter 2-1000mm Hardenability 4130 Iron Rod Factory1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Steel ProductsSteel Round Bar4130 Steel Bar4140 Steel Bar
Jiangsu Xinyuanxing Metal Products Co., Ltd.
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Product Description AISI Hot Rolled 4140 Alloy Steel Bars: High-Strength Solutions for Industrial Machinery Diameter 2-1000mm Hardenability 4130 Iron Rod FactoryProduct DescriptionAISI SA4140 steel is a low-alloy, medium-carbon chromium-molybdenum steel known for its excellent strength, toughness, and hardenability. When formed into rods, it becomes a versatile material widely used in industrial and engineering applications.Chemical Composition (Typical, % by Weight)Carbon (C): 0.38 - 0.43%Chromium (Cr): 0.80 - 1.10%Molybdenum (Mo): 0.15 - 0.25%Manganese (Mn): 0.75 - 1.00%Silicon (Si): 0.15 - 0.35%Phosphorus (P): Maximum 0.035%Sulfur (S): Maximum 0.040%Mechanical Properties (Annealed and Heat-Treated)PropertyAnnealed ConditionHeat-Treated (Tempered)Tensile Strength655 - 795 MPa (95,000 - 115,000 psi)1,035 - 1,380 MPa (150,000 - 200,000 psi)Yield Strength415 MPa (60,000 psi) minimum860 MPa (125,000 psi) minimumElongation (in 50 mm)25% minimum12 - 18%Hardness (Brinell)197 maximum28 - 32 HRC (typical)Modulus of Elasticity~200 GPa (29,000 ksi)~200 GPa (29,000 ksi)Density7.85 g/cm3 (0.284 lb/in3)7.85 g/cm3 (0.284 lb/in3)Key CharacteristicsHardenability: Responds well to heat treatment (quenching and tempering), allowing for customization of strength and toughness.Weldability: Can be welded using most methods, though preheating and post-weld annealing are recommended to prevent cracking.Machinability: Good in the annealed state; becomes more challenging after heat treatment due to increased hardness.Wear Resistance: Excellent when heat-treated, making it suitable for high-stress, abrasive environments.Common Applications of 4140 Steel RodsAutomotive parts (axles, crankshafts, gears)Industrial machinery components (shafts, bolts, studs)Oil and gas equipment (drill collars, connectors)Tooling and die componentsStructural parts requiring high strength-to-weight ratios4140 steel rods are valued for their balance of strength, ductility, and cost-effectiveness, making them a go-to material for demanding engineering applications.Prdouct NameCarbon Steel BarShapeRound,Square,Flat,Rectangle,etc.MaterialCarbon steel :Q195-Q420 Series,SS400-SS540 Series,S235JR-S355JR Series,ST Series,A36-A992 Series,Gr50 Series,etc.SurfaceMild steel plain finish, hot dip galvanized, color coated, ect.Size Tolerance±3%Processing methodBending, Welding, Decoiling, Cutting, Punching, Polishing or as customer's requestSizeOD from 10 - 400mm, length from 1m-12m or according to customer's special requestTechnologyHot roll, cold roll, cold drawn, ect.Trade TermFOB,CIF,CFR,EXW,etc.Price TermT/T,L/C,Western Union,Paypal,Apple Pay,Google Pay,D/A,D/P,MoneyGramLead timeSmall batch can be in 7 days, depending on the quantityCertificateISO9001Detailed PhotosCompany ProfileCertificationsQuality ControlExhibitionPackaging & ShippingFAQQ1: Why choose us?A: Our company, as an internationally experienced and professionalsupplier, has been engaged in steel business for more than ten years. Wecan provide a variety of steel products with high quality to our clients.Q2: Can you provide OEM/ODM service?A: Yes. Please feel free to contact us for more detailsQ3:What is your terms of payment?A: 100% T/T advance.30% T/T and balance against copy of documents.30% T/T advance, balance L/C at sight.Q4: Can we visit your factory?A: Warmly welcome. Once we have your schedule, we will arrange theprofessional sales team to follow up your case.Q5: Can you provide sample?A: Yes. Sample is free for regular sizes, but the buyer needs to pay freightcost.Q6: How long is your delivery time?A: Regular lead time is 15 to 30 days after receiving deposit.
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