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SA 387 Grade 91 Alloy Steel Plate / Sheet

SA 387 alloy steel plate/sheet

SA 387 Grade 91 Alloy Steel Plate / Sheet

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Email Address ladhanimetal@gmail.com

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Address Chennai, Tamil Nadu, India

Chennai, India, 600001

Description

SA 387 Grade 91 is a high-strength chromium-molybdenum-vanadium alloy steel developed for high-temperature and high-pressure service. Supplied in plate and sheet form (sheet cut from plate), this grade is widely used in advanced power generation, petrochemical, and refinery applications where superior creep resistance, elevated temperature strength, and long-term microstructural stability are essential. The addition of vanadium and niobium (columbium) provides exceptional resistance to creep and thermal fatigue under prolonged service conditions. Ladhani Metal Corporation is a reliable manufacturer, supplier, and exporter of SA 387 Grade 91 alloy steel plates and sheets. Our materials are sourced from approved mills and supplied in normalized and tempered condition, ensuring consistent quality, excellent mechanical performance, and full compliance with ASME SA 387 / ASTM A387 standards for critical pressure equipment. Forms Available: plate, sheet (cut from plate) Grades Available: SA 387 Grade 5, Grade 9, Grade 11, Grade 12, Grade 22, Grade 91 Chemical Composition (% – SA 387 Grade 91): • Carbon (C): 0.08 – 0.12 • Chromium (Cr): 8.00 – 9.50 • Molybdenum (Mo): 0.85 – 1.05 • Manganese (Mn): 0.30 – 0.60 • Silicon (Si): 0.20 – 0.50 • Vanadium (V): 0.18 – 0.25 • Niobium (Nb): 0.06 – 0.10 • Nitrogen (N): 0.03 – 0.07 • Phosphorus (P): ≤ 0.020 • Sulphur (S): ≤ 0.010 Mechanical Properties (SA 387 Grade 91 – typical, vary by thickness): • Tensile Strength: 585 – 760 MPa • Yield Strength: minimum 415 MPa • Elongation: minimum 18% Key Features: • Outstanding creep resistance at elevated temperatures • Excellent strength retention up to approximately 600°C • Superior resistance to thermal fatigue and oxidation • High-pressure capability for critical service environments • Requires controlled welding procedures with mandatory PWHT • Long service life in severe operating conditions Material Characteristics: SA 387 Grade 91 alloy steel is a modified 9Cr-1Mo steel strengthened with vanadium and niobium for improved creep rupture strength and microstructural stability. It is specifically designed for long-term exposure to high temperature and pressure, making it a preferred material for next-generation power plants and critical refinery equipment. Applications: • High-temperature pressure vessels • Boilers and superheater components • Heat recovery steam generators (HRSG) • Power plant headers and piping components • Refinery and petrochemical reactors • Oil & gas high-pressure processing units Conclusion: Ladhani Metal Corporation supplies premium-quality SA 387 Grade 91 alloy steel plates and sheets for the most demanding high-temperature and high-pressure applications. With superior chemical stability, exceptional mechanical performance, and compliance with international standards, SA 387 Grade 91 is the material of choice for critical service environments. For customized sizes, technical consultation, or grade comparison, contact Ladhani Metal Corporation. #SA387 #SA387AlloySteel #ASTMA387 #ChromiumMolybdenumSteel #CrMoSteel #AlloySteelPlate #AlloySteelSheet #PressureVesselSteel #BoilerSteel #HighTemperatureSteel #HighPressureSteel #HeatResistantSteel #RefinerySteel #PetrochemicalSteel #PowerPlantSteel #OilAndGasSteel #ThermalPlantSteel #ReactorSteel #HeatExchangerSteel #HeavyEngineeringSteel #IndustrialSteel #EngineeringSteel #FabricationSteel #WeldableAlloySteel #SteelPlates #SteelSheets #AlloySteelProducts #SteelForRefineries #SteelForBoilers #SteelForPressureVessels #SteelManufacturers #SteelSuppliers #SteelExporters #IndianSteel #AlloySteelSupplier #SteelPlatesIndia #SteelSheetsIndia #MetalIndustry #IndustrialFabrication #PowerGenerationSteel #EnergySectorSteel #ASTMSteel #ASMESteel #AlloySteel Mumbai #NaviMumbai #Thane #Pune #Ahmedabad #Vadodara #Surat #Rajkot #Jamnagar #Gandhidham #Delhi #Faridabad #Gurugram #Noida #Ghaziabad #Jaipur #Neemrana #Ludhiana #Jalandhar #Amritsar #Chandigarh #Kolkata #Howrah #Durgapur #Bokaro #Jamshedpur #Rourkela #Bhubaneswar #Visakhapatnam #Vijayawada #Hyderabad #Chennai #Coimbatore #Salem #Hosur #Bengaluru #Tumakuru #Belagavi #Hubballi #Mangaluru #Kochi #Ernakulam #Trivandrum #Nagpur #Nashik #Aurangabad #Indore #Bhopal #Raipur #Bhilai

Material Grades SA 387 Grade 5, Grade 11, Grade 22, Grade 91
Thickness Range 6 mm to 200 mm
Width Range Up to 3000 mm
Length 2000 mm to 8000 mm; custom lengths available
country of origin Made in India
Manufactured by Ladhani Metal Corporation

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