ASTM A355 Nitriding Alloy Steel Bars are special alloy steel bars developed for nitriding heat treatment processes to produce a hard, wear-resistant surface while maintaining a tough and strong core. These steels contain alloying elements such as aluminum, chromium, molybdenum, and vanadium that promote the formation of stable nitrides during nitriding, resulting in excellent surface hardness and fatigue resistance. Manufactured in accordance with ASTM A355, this specification covers alloy steel bars intended specifically for nitriding applications. The controlled chemical composition ensures uniform nitriding response, high surface hardness, and improved resistance to wear and fatigue. Ladhani Metal Corporation is a trusted manufacturer, supplier, and exporter of ASTM A355 Nitriding Alloy Steel Bars, supplied with mill test certificates and strict quality inspection as per international standards. Forms of Supply (as per specification): Hot rolled round bars, Black bars, Forged bars, Peeled bars, Turned bars, Ground bars Available Grades (as per ASTM A355): Class A, Class B, Class C, Class D Scope of Specification: • Covers alloy steel bars intended for nitriding heat treatment • Designed to develop very high surface hardness without distortion • Contains aluminum and other alloying elements that form stable nitrides • Suitable for precision components requiring wear resistance Typical Chemical Composition (varies by class): • Carbon (C): Controlled low to medium carbon content • Manganese (Mn): Provides strength and hardenability • Chromium (Cr): Improves wear resistance and strength • Molybdenum (Mo): Enhances high-temperature strength and hardenability • Aluminum (Al): Promotes formation of hard nitrides during nitriding • Phosphorus (P): ≤ 0.035 • Sulphur (S): ≤ 0.040 Mechanical Properties (Typical – Class Dependent): • High core strength • Excellent fatigue resistance • Good toughness • Surface hardness up to approximately 900–1100 HV after nitriding Key Features: • Excellent nitriding response • Very high surface hardness after treatment • Superior wear resistance • Minimal distortion during heat treatment • Excellent fatigue strength Material Characteristics: ASTM A355 nitriding alloy steel bars are specifically engineered to develop a hard nitrided surface layer while maintaining a tough and ductile core. The alloying elements present in the steel promote stable nitride formation, which significantly improves wear resistance, fatigue strength, and service life in demanding applications. Applications: • Gears and gear shafts • Crankshafts • Camshafts • Cylinder liners • Valve parts • Dies and tooling components • Precision mechanical parts Conclusion: Ladhani Metal Corporation supplies premium quality ASTM A355 Nitriding Alloy Steel Bars in various sizes and finishes. With excellent nitriding properties, superior wear resistance, and reliable mechanical performance, ASTM A355 steel bars are widely used in automotive, aerospace, and heavy engineering industries. For stock availability, customized dimensions, or technical specifications, contact Ladhani Metal Corporation. #ASTMA355 #ASTMA355Steel #ASTMA355Bars #ASTMA355NitridingSteel #ASTMA355SteelBars #ASTMA355Specification #ASTMA355AlloySteel #ASTMA355RoundBars #ASTMA355FlatBars #ASTMA355ForgedBars #ASTMA355Supplier #ASTMA355Manufacturer #ASTMA355Stockist #ASTMA355Exporters #ASTMA355Material #ASTMA355Grade #ASTMA355HeatTreatmentSteel #ASTMA355NitridingBars #NitridingSteelBars #NitridingAlloySteel #AlloySteelBars #AlloySteelSupplier #EngineeringSteelBars #IndustrialSteelBars #HeatTreatmentSteel #CaseHardeningSteel #NitridedSteel #PrecisionSteelBars #MechanicalSteelBars #HighStrengthSteel #WearResistantSteel #SurfaceHardeningSteel #HeavyEngineeringSteel #MachineComponentSteel #AutomotiveSteelBars #GearSteelBars #ShaftSteelBars #ForgingSteelBars #IndustrialAlloySteel #ASTMSteelBars #ASTMAlloySteel #SteelBarSupplier #SteelBarManufacturer #SteelBarStockist #SteelBarExporters #QualitySteelBars #HighPerformanceSteel #EngineeringAlloySteel #IndustrialMaterials #MetalSupplier #Mumbai #Delhi #Chennai #Kolkata #Bengaluru #Hyderabad #Ahmedabad #Pune #Surat #Jaipur #Lucknow #Kanpur #Nagpur #Indore #Thane #Bhopal #Visakhapatnam #Patna #Vadodara #Ghaziabad #Ludhiana #Coimbatore #Agra #Madurai #Nashik #Faridabad #Meerut #Rajkot#Varanasi #Srinagar #Aurangabad #Dhanbad #Amritsar #NaviMumbai #Allahabad #Ranchi #Howrah #Jabalpur #Gwalior #Vijayawada #Jodhpur #Raipur #Kota #Guwahati #Chandigarh #Solapur #Hubli #Mysuru #Tiruchirappalli #Bareilly