ISO 630 is a series of International Standards covering technical delivery requirements for hot-rolled structural steel plates, wide flats, sections and bars. For the current published series, ISO 630-1:2021, ISO 630-2:2021, ISO 630-3:2021, ISO 630-4:2021 and ISO 630-5:2023 apply. The earlier editions ISO 630-1:2011, ISO 630-2:2011, ISO 630-3:2012, ISO 630-4:2012 and ISO 630-5:2014 are withdrawn. Ladhani Metal Corporation is a manufacturer, supplier, and exporter of ISO 630 Structural Steels, offering plates, wide flats, sections and bars in required grades, dimensions and delivery conditions. Products can be supplied with mill test certificates and strict quality inspection as per international standards. ISO 630 Series 1 to 5 ISO 630-1:2021 – General Technical Delivery Conditions This part provides general technical delivery conditions for hot-rolled flat and long structural steel products, including plates, wide flats, sections and bars. The products are principally intended for welded or bolted structures. ISO 630-2:2021 – Structural Steels for General Purposes Grades: S235 | S275 | S355 | S460 | SG205 | SG250 | SG285 | SG345 This part covers structural steels for general purposes in plates, wide flats, hot-rolled sections and bars. The standard includes different qualities and Charpy V-notch requirements depending on grade and quality. ISO 630-3:2021 – Fine-Grain Structural Steels Grades: S275 | S355 | S390 | S420 | S460 | S500 | SG245 | SG290 | SG325 | SG345 | SG365 | SG415 | SG460 This part covers weldable fine-grain structural steels supplied in applicable as-rolled, normalized/normalized rolled and thermomechanically processed conditions. ISO 630-4:2021 – High Yield Strength Quenched and Tempered Structural Steel Grades: S460Q | S500Q | S550Q | S620Q | S690Q | S890Q | S960Q | SG460Q | SG500Q | SG700Q This part covers high-yield-strength quenched and tempered structural steel plates and wide flats for welded or bolted structures. ISO 630-5:2023 – Structural Steels with Improved Atmospheric Corrosion Resistance Grades: S235W | S295W | S355W | S420W | S460W | S500W | S550W | S295WP | S355WP | S355WSE | SG245 | SG345 | SG365 | SG400 | SG460 | SG500 | SG700 This latest Part 5 covers weathering structural steels with improved atmospheric corrosion resistance in applicable as-rolled, normalized/normalized rolled, thermomechanically processed and quenched and tempered conditions. Forms of Supply • Structural Steel Plates | Wide Flats | Flat Bars | Round Bars | Square Bars | Hot-Rolled Sections | Structural Sections | Cut-to-Length Plates | Custom Sizes Key Features • High structural strength • Good weldability • Good toughness • Suitable for welded and bolted structures • Available in normalized and thermomechanical conditions • High-yield-strength options available • Weathering steel options available • Suitable for heavy structural applications • Available in different grades and qualities Applications • Bridges • Buildings • Industrial Structures • Heavy Machinery • Infrastructure Projects • Railway Structures • Structural Frameworks • Storage Structures • Welded Structures • Bolted Structures • General Engineering Conclusion The current ISO 630 Series 1 to 5 provides a comprehensive range of structural steels covering general-purpose, fine-grain, high-yield-strength quenched and tempered, and improved atmospheric corrosion-resistant steels. The currently published editions are ISO 630-1:2021, ISO 630-2:2021, ISO 630-3:2021, ISO 630-4:2021 and ISO 630-5:2023. To place an order or make an enquiry for ISO 630 Structural Steel Plates, Wide Flats or Bars, contact Ladhani Metal Corporation for your required grade, dimensions, delivery condition and quantity. #ISO630 #ISO630StructuralSteel #ISO630Steel #ISO630SteelPlate #ISO630StructuralSteels #StructuralSteel #StructuralSteelPlate #StructuralSteelSheets #StructuralSteelBars #WideFlats #SteelPlates #SteelSheets #SteelBars #HighStrengthStructuralSteel #FineGrainSteel #WeldableSteel #ConstructionSteel #BridgeSteel #HeavySteelPlate #EngineeringSteel #IndustrialSteel #StructuralSteelSupplier #SteelPlateSupplier #SteelPlateManufacturer #SteelPlateExporter #StructuralSteelSupplier #EuropeanSteelStandard #InternationalSteelStandard #LadhaniMetals #StructuralSteelSolutions #Mumbai #Delhi #Chennai #Kolkata #Bengaluru #Hyderabad #Ahmedabad #Pune #Surat #Jaipur #Lucknow #Kanpur #Nagpur #Indore #Srinagar #Aurangabad #Dhanbad #Amritsar #NaviMumbai

ISO 5952:2019 specifies requirements for hot-rolled steel sheet of structural quality with improved atmospheric corrosion resistance, also known as weather-resistant structural steel. The standard covers steel intended for structures where mechanical properties and increased resistance to atmospheric corrosion are required. The current ISO 5952:2019 edition was reviewed and confirmed in 2024. Ladhani Metal Corporation is a manufacturer, supplier, and exporter of ISO 5952 Hot-Rolled Steel Sheet – Weathering Steel, available in required grades, classes, thicknesses, widths, lengths, coils, and cut-to-size sheets. Products can be supplied with mill test certificates and strict quality inspection as per international standards. Forms of Supply • Hot-Rolled Steel Sheets | Weathering Steel Sheets | Atmospheric Corrosion Resistant Sheets | Structural Steel Sheets | Hot-Rolled Coils | Cut-to-Length Sheets | Descaled Sheets | Pickled Sheets | Oiled Sheets | Custom Cut Sheets Available Grades HSA 235W | HSA 245W | HSA 355W1 | HSA 355W2 | HSA 365W Classes • Class A – Suitable for moderate loading conditions • Class B – Intended for welded structures and structural parts subjected to normal loading conditions • Class C – Intended where some resistance to brittle fracture is required • Class D – Intended where high resistance to brittle fracture is required ISO 5952:2019 identifies HSA 235W, HSA 245W, HSA 355W1, HSA 355W2 and HSA 365W, with the applicable classes specified in the standard. Chemical Composition – Example Grade HSA 355W1 • Carbon (C): Max. 0.12% • Manganese (Mn): Max. 1.00% • Silicon (Si): 0.20–0.75% • Phosphorus (P): Max. 0.035% • Sulfur (S): Max. 0.035% • Copper (Cu): 0.25–0.55% • Nickel (Ni): Max. 0.65% • Chromium (Cr): 0.30–1.25% The standard also permits microalloying elements such as vanadium, titanium and niobium, with the combined content of Mo, Nb, Ti, V and Zr limited to 0.15% where applicable. Mechanical Properties • HSA 235W: Yield strength min. 235 MPa | Tensile strength 360–510 MPa • HSA 245W: Yield strength min. 245 MPa | Tensile strength 400–540 MPa • HSA 355W1: Yield strength min. 355 MPa | Tensile strength 510–680 MPa • HSA 355W2: Yield strength min. 355 MPa | Tensile strength 510–680 MPa • HSA 365W: Yield strength min. 365 MPa | Tensile strength 490–610 MPa Elongation requirements vary according to grade, class, and sheet thickness. Dimensions and Thickness ISO 5952:2019 products are commonly supplied in thicknesses from 1.6 mm up to and including 12.5 mm and widths of 600 mm and over. They may be supplied in coils or cut lengths. Hot-rolled sheet below 600 mm wide may be slit from wider sheet and is still considered sheet. Surface Conditions • Hot-Rolled Surface • Descaled Surface • Pickled Surface • Oiled Surface • Unoiled Surface Hot-rolled material normally has oxide or scale from the rolling process. Scale can be removed by pickling or mechanical methods such as grit blasting. Descaled sheet may also be supplied with oil to help prevent rusting. Key Features • Improved atmospheric corrosion resistance • Weather-resistant steel characteristics • Good structural strength • Suitable for welded structures • Good weldability with appropriate welding conditions • High resistance to atmospheric exposure • Good dimensional consistency • Available in different strength levels • Suitable for bolted, riveted and welded structures • Available in coils and cut lengths Material Characteristics ISO 5952 weathering steel achieves improved atmospheric corrosion resistance through the intentional addition of alloying elements such as copper, chromium, nickel and phosphorus. These elements promote the formation of a protective oxide layer on the steel surface. The actual corrosion performance also depends on factors such as the surrounding atmosphere and structural design. Applications • Bridges • Structural Frameworks • Industrial Structures • Outdoor Structural Components • Railway Structures • Transportation Infrastructure • Buildings and Architectural Structures • Storage Structures • Welded Structural Components • Bolted Structures • Riveted Structures • General Engineering Structures ISO 5952 specifically identifies bolted, riveted and welded structures as intended uses for the covered weather-resistant structural steel sheets. Conclusion ISO 5952 Hot-Rolled Steel Sheet – Weathering Steel provides structural steel with improved atmospheric corrosion resistance along with specified mechanical properties. The grades HSA 235W, HSA 245W, HSA 355W1, HSA 355W2 and HSA 365W are available in different classes and dimensions to meet structural and engineering requirements. To place an order or make an enquiry for ISO 5952 Hot-Rolled Steel Sheet – Weathering Steel, contact Ladhani Metal Corporation for your required grade, class, thickness, width, length, surface condition and quantity.

ISO 4957:2018 specifies requirements for wrought tool steels covering non-alloy cold-work tool steels, alloy cold-work tool steels, alloy hot-work tool steels, and high-speed tool steels. The standard applies to products such as hot-rolled, forged, cold-drawn, cold-rolled and powder-metallurgy products supplied in specified surface and heat-treatment conditions. ISO confirms the 2018 edition as the current edition, reviewed and confirmed in 2023. Ladhani Metal Corporation is a manufacturer, supplier, and exporter of ISO 4957 Tool Steels, available in different grades, sizes, forms, surface conditions, and heat-treatment conditions. Products can be supplied with mill test certificates and strict quality inspection as per international standards. Forms of Supply • Tool Steel Bars | Round Bars | Flat Bars | Square Bars | Hexagonal Bars | Tool Steel Plates | Tool Steel Sheets | Forgings | Cold Drawn Bars | Hot Rolled Bars | Ground Bars | Precision Ground Bars | Tool Steel Strips Available Grades 105V | 50WCrV8 | 60WCrV8 | 102Cr6 | 21MnCr5 | 70MnMoCr8 | 90MnCrV8 | 95MnWCr5 | X100CrMoV5 | X153CrMoV12 | X210Cr12 | X210CrW12 | 35CrMo7 | 40CrMnNiMo8-6-4g | 45NiCrMo16 | 55NiCrMoV7 | 32CrMoV12-28 | X37CrMoV5-1 | X38CrMoV5-3 | X40CrMoV5-1 | 50CrMoV13-15 | X30WCrV9-3 | X35CrWMoV5 | 38CrCoWV18-17-17 The ISO 4957:2018 tables classify tool steels according to cold-work, hot-work and high-speed tool-steel groups. The grades supplied under the standard include alloy cold-work and hot-work grades such as 105V, 50WCrV8, 60WCrV8, 102Cr6, 21MnCr5, 70MnMoCr8 and 90MnCrV8. Steel Types • Alloy Cold-Work Tool Steels | 105V | 50WCrV8 | 60WCrV8 | 102Cr6 | 21MnCr5 | 70MnMoCr8 | 90MnCrV8 | 95MnWCr5 | X100CrMoV5 | X153CrMoV12 | X210Cr12 | X210CrW12 • Alloy Tool Steels for Toughness and Strength | 35CrMo7 | 40CrMnNiMo8-6-4g | 45NiCrMo16 | 55NiCrMoV7 | 32CrMoV12-28 • Hot-Work Tool Steels | X37CrMoV5-1 | X38CrMoV5-3 | X40CrMoV5-1 | 50CrMoV13-15 | X30WCrV9-3 | X35CrWMoV5 | 38CrCoWV18-17-17 Chemical Composition – Example Grade X153CrMoV12 • Carbon (C): 1.45–1.70% • Silicon (Si): Max. 0.40% • Manganese (Mn): Max. 0.40% • Chromium (Cr): 11.00–12.50% • Molybdenum (Mo): 0.70–1.00% • Vanadium (V): 0.70–1.00% • Phosphorus (P): Max. 0.030% • Sulfur (S): Max. 0.030% X153CrMoV12 is an alloy cold-work tool steel characterized by high carbon and chromium content with molybdenum and vanadium additions, providing high hardness and wear resistance after suitable heat treatment. ISO 4957 includes this grade among its alloy cold-work tool steels. Mechanical Properties • High hardness after hardening and tempering • Excellent wear resistance • Good dimensional stability • High compressive strength • Good toughness depending on grade • Good resistance to deformation • High resistance to abrasion • Suitable for demanding tooling conditions The ISO 4957 standard provides reference values for annealed hardness, austenitizing temperature, tempering temperature and hardness in the hardened and tempered condition for the specified grades. Key Features • High hardness • Excellent wear resistance • High strength • Good toughness • Excellent dimensional stability • Good machinability in annealed condition • High resistance to abrasion • Suitable for precision tooling • Good heat-treatment response • Available in different grades and forms • Suitable for demanding tooling operations Material Characteristics ISO 4957 Tool Steels are selected according to the required combination of hardness, wear resistance, toughness, strength, dimensional stability and hot-temperature performance. Alloying elements such as chromium, molybdenum, vanadium, tungsten and nickel provide different combinations of wear resistance, hardenability, toughness and resistance to thermal effects. Applications • Dies • Punches • Cutting Tools • Blanking Tools • Forming Tools • Stamping Tools • Press Tools • Moulds • Shear Blades • Industrial Knives • Rollers • Gauges • Jigs and Fixtures • Hot-Working Dies • Forging Dies • Extrusion Tooling • Plastic Moulding Tools • Precision Engineering Tools Conclusion ISO 4957 Tool Steels provide a wide range of alloy and high-performance steels for cold-work, hot-work and other demanding tooling requirements. The available grades offer different combinations of hardness, wear resistance, toughness, strength and dimensional stability, allowing the appropriate grade to be selected according to tooling requirements. To place an order or make an enquiry for ISO 4957 Tool Steels, contact Ladhani Metal Corporation for your required grade, size, form, surface condition, heat-treatment condition and quantity. #ISO4957 #ISO4957ToolSteels #ISO4957Steel #ISO4957ToolSteel #ToolSteels #ToolSteel #ToolSteelBars #ToolSteelSupplier #ToolSteelManufacturer #ToolSteelExporter #ColdWorkToolSteel #HotWorkToolSteel #HighSpeedToolSteel #AlloyToolSteel #CarbonToolSteel #DieSteel #MouldSteel #PrecisionToolSteel #ToolSteelBarsSupplier