EN 10083-3 25CrMoS4 is a resulphurized chromium-molybdenum alloy steel grade designed for applications requiring good strength, reliable hardenability, and enhanced machinability. Due to the addition of sulphur (S), this grade offers improved machining performance, making it highly suitable for components that require extensive machining after processing in both plate and bar forms. With a nominal carbon content of approximately 0.25% and alloying elements such as chromium and molybdenum, 25CrMoS4 provides a balanced combination of strength, toughness, and wear resistance after quenching and tempering. The material is manufactured in accordance with EN 10083-3, which specifies technical delivery conditions for alloy steels for quenching and tempering. Ladhani Metal Corporation is a leading manufacturer, supplier, and exporter of EN 10083-3 25CrMoS4 alloy steel plates and bars, supplied with mill test certificates and strict quality assurance as per international standards. Forms of Supply (as per grade): Hot rolled plates Quenched and tempered plates Normalized plates Annealed plates Flame cut plates Cut-to-size plates Hot rolled round bars Black round bars Forged bars Bright bars Peeled bars Square bars Flat bars Hex bars Explanation of Designation (25CrMoS4): • 25 – Approx. 0.25% carbon content • Cr – Chromium for improved strength and hardenability • Mo – Molybdenum for enhanced hardenability and resistance to tempering softening • S – Resulphurized for improved machinability • 4 – Indicates alloying content range as per EN standard Chemical Composition (% – typical limits): • Carbon (C): 0.22 – 0.29 • Manganese (Mn): 0.60 – 0.90 • Silicon (Si): ≤ 0.40 • Chromium (Cr): 0.90 – 1.20 • Molybdenum (Mo): 0.15 – 0.30 • Sulphur (S): 0.020 – 0.040 • Phosphorus (P): ≤ 0.025 Mechanical Properties (Typical, quenched & tempered condition): • Tensile Strength: 700 – 900 MPa • Yield Strength: ≥ 500 MPa • Elongation: ≥ 12% • Hardness: 200 – 280 HB (depending on section size and heat treatment) Key Features: • Resulphurized Cr-Mo alloy steel with superior machinability • Good strength and toughness after heat treatment • Improved hardenability compared to carbon steels • Reliable fatigue resistance • Suitable for both plate fabrication and machined bar components Material Characteristics: EN 10083-3 25CrMoS4 alloy steel offers a strong combination of mechanical performance and machining efficiency. The chromium and molybdenum content enhances hardenability and strength, while sulphur addition improves chip formation during machining operations. It performs well in quenched and tempered conditions for structural and mechanical applications. Applications: • Machined shafts and transmission components • Structural and fabricated engineering parts • Automotive components • Industrial machinery parts • Heat-treated mechanical plates and bars Conclusion: Ladhani Metal Corporation supplies high-quality EN 10083-3 25CrMoS4 alloy steel plates and bars in a wide range of sizes and heat-treated conditions. With enhanced machinability, good strength, and dependable performance, 25CrMoS4 is an excellent choice for demanding engineering and industrial applications. For stock availability, custom sizes, or technical assistance, contact Ladhani Metal Corporation. #EN10083 #EN100833 #EN100833Steel #EN10083AlloySteel #EN10083EngineeringSteel #ENStandardSteel #AlloySteel #ChromiumSteel #34Cr4 #42Cr4 #50Cr4 #EngineeringSteelBars #AlloySteelBars #AlloySteelRods #RoundBar #FlatBar #SquareBar #HexBar #ForgingSteel #MachinerySteel #AutomotiveSteel #MechanicalSteel #ShaftSteel #GearSteel #AxleSteel #CrankshaftSteel #BoltSteel #MachinePartsSteel #HeatTreatableSteel #NormalizedSteel #AnnealedSteel #QuenchedTemperedSteel #SteelManufacturers #SteelSuppliers #SteelStockist #SteelExporter #IndianSteel #AlloySteelSupplier #EN100833Supplier #EN100833Manufacturer #EN100833Exporter #SteelBarsIndia #SteelRodsIndia #MetalIndustry #IndustrialSteel #InfrastructureSteel #EngineeringIndustry #HeavyEngineeringSteel #FabricationSteel #SteelTrading #SteelWholesale #LadhaniMetal #Mumbai #Delhi #Chennai #Kolkata #Pune #Ahmedabad #Hyderabad #Bengaluru #Coimbatore #Surat #Vadodara #Rajkot #Nashik #Indore #Nagpur #Ludhiana #Faridabad #Noida #Visakhapatnam #Bhubaneswar #Jamshedpur #Patna #Ranchi #Jaipur #Lucknow #Kanpur #Bhopal #Chandigarh #Amritsar #Kochi #Trivandrum #Goa #Aurangabad #Salem #Hosur #Durgapur #Guwahati #Vapi #Ankleshwar #Morbi #Thane #Belgaum #Vijayawada #Madurai #Erode #Kolhapur #Hubli #Udaipur #Raipur #Bilaspur #Agra #Varanasi #Meerut #Jodhpur #Bhavnagar