Introduction
ASTM A782
/ A782M covers manganese-chromium-molybdenum-silicon-zirconium alloy steel
plates intended for welded pressure vessels, boilers, reactors, heat
exchangers, and other pressure-retaining equipment requiring high strength,
excellent toughness, superior weldability, and dependable performance at
elevated temperatures and pressures. The addition of manganese, chromium,
molybdenum, silicon, and zirconium improves hardenability, creep resistance,
oxidation resistance, and long-term structural stability.
ASTM A782
/ A782M alloy steel plates are widely used in petrochemical plants, refineries,
power generation facilities, fertilizer plants, chemical processing industries,
pressure vessels, boilers, reactors, and industrial process equipment. Their
outstanding combination of strength, toughness, and resistance to elevated
temperature service makes them suitable for critical pressure-retaining
applications.
The
specification ensures consistent chemical composition, reliable mechanical
properties, excellent fabrication characteristics, and long service life in
demanding industrial environments.
Ladhani
Metal Corporation is a manufacturer, supplier, and exporter of ASTM A782 /
A782M Pressure Vessel Plates, Manganese-Chromium-Molybdenum-Silicon-Zirconium
Alloy Steel, supplying premium-quality alloy steel plates for pressure vessel,
boiler, and industrial engineering applications worldwide.
Applicable Standard
Standard
Specification: ASTM A782 / A782M
Organization:
ASTM International
Title:
Standard Specification for Pressure Vessel Plates,
Manganese-Chromium-Molybdenum-Silicon-Zirconium Alloy Steel
This
specification covers manganese-chromium-molybdenum-silicon-zirconium alloy
steel plates intended for welded pressure vessels and boilers requiring high
strength, excellent toughness, and elevated temperature performance.
Forms of Supply
ASTM A782
/ A782M alloy steel products are supplied in the following forms:
•
Pressure vessel alloy steel plates
• Boiler quality alloy steel plates
• Heavy thickness plates
• Hot rolled plates
• Heat-treated plates
• Cut-to-length plates
• CNC-cut plates
• Flame-cut plates
• Fabrication-ready plates
• Engineering steel plates
• Industrial alloy steel plates
• Custom-sized plates
Grades Covered Under ASTM A782 / A782M
• Grade A
• Grade B
Supply Condition
• Hot
rolled
• Normalized
• Quenched and tempered
• Stress relieved
• Fabrication-ready condition
Surface Finish
• Mill
finish
• Shot blasted finish
• Pickled finish
• Ground finish
• Machined finish (when specified)
Standard Sizes
Plates
Thickness:
6 mm to 200 mm
Width:
1000 mm to 3500 mm
Length:
Up to 12000 mm
Custom
dimensions, flame-cut components, and machined plates are available according
to customer requirements.
Chemical Composition of ASTM A782 / A782M
The
chemical composition varies according to the specified grade.
|
Element |
Chemical Composition (%) |
|
Carbon (C) |
0.25 max |
|
Manganese
(Mn) |
1.00 – 1.60 |
|
Silicon
(Si) |
0.15 – 0.40 |
|
Phosphorus
(P) |
0.035 max |
|
Sulfur (S) |
0.035 max |
|
Chromium
(Cr) |
0.40 – 0.80 |
|
Molybdenum
(Mo) |
0.15 – 0.35 |
|
Zirconium
(Zr) |
0.05 – 0.15 |
The
chemical composition requirements vary according to the specified ASTM A782 /
A782M grade and plate thickness.
Key Features of ASTM A782 / A782M Plates
• High
mechanical strength
• Excellent elevated temperature performance
• Superior creep resistance
• Outstanding pressure resistance
• Excellent toughness
• Good oxidation resistance
• Superior weldability
• Excellent fabrication characteristics
• Long operational service life
• Reliable dimensional stability
Applications of ASTM A782 / A782M Plates
Pressure Vessel Industry
•
Pressure vessels
• Reactor vessels
• Separator vessels
• Pressure chambers
Boiler Industry
• Steam
boilers
• Boiler drums
• Superheater components
• Boiler pressure parts
Petrochemical Industry
•
Chemical reactors
• Refinery equipment
• Process vessels
• Storage tanks
Power Generation Industry
• Thermal
power plants
• Boiler systems
• Heat exchangers
• High-pressure process equipment
Oil and Gas Industry
•
Pressure processing equipment
• Storage vessels
• Process tanks
• Refinery systems
Industrial Manufacturing
• Heavy
engineering equipment
• Industrial process plants
• Fabricated pressure equipment
• High-temperature industrial components
Fabrication and Welding
ASTM A782
/ A782M alloy steel plates provide excellent fabrication and welding
characteristics.
•
Suitable for conventional welding processes
• Good forming characteristics
• Excellent machining performance
• Suitable for heavy fabrication work
• Reliable welded joint performance
• Excellent dimensional accuracy
Proper
welding procedures and post-weld heat treatment should be followed where
required by the application.
Heat Treatment
ASTM A782
/ A782M alloy steel plates are generally supplied in heat-treated conditions to
achieve the required mechanical properties.
•
Normalizing refines the grain structure
• Quenching increases strength and hardness
• Tempering improves toughness and ductility
• Stress relieving minimizes residual stresses after fabrication
• Controlled heat treatment ensures consistent mechanical performance and
elevated temperature reliability
Advantages of ASTM A782 / A782M Plates
•
Excellent pressure resistance
• Superior elevated temperature strength
• Outstanding creep resistance
• High structural integrity
• Excellent weldability
• Reliable fabrication performance
• Long operational service life
• Excellent mechanical stability
• Suitable for critical pressure vessel applications
• Cost-effective engineering solution
Conclusion
Ladhani Metal Corporation
supplies ASTM A782 / A782M pressure vessel alloy steel plates in Grade A and
Grade B, various thicknesses, heat-treated conditions, surface finishes, and
customized dimensions, delivering dependable material solutions for pressure
vessel, boiler, and industrial engineering projects worldwide.
#ASTMA782
#ASTMA782AlloySteelPlates #ASTMA782PressureVesselPlates
#ASTMA782PressureVesselSteel #ASTMA782SteelPlate #AlloySteelPlates
#PressureVesselSteelPlates #ManganeseChromiumMolybdenumSteel
#PressureVesselPlateSupplier #AlloySteelPlateManufacturer
#AlloySteelPlateSupplier #AlloySteelPlateExporter #IndustrialSteelPlates
#HeatTreatedSteelPlates #HighStrengthAlloySteel #BoilerQualitySteelPlate
#PressureEquipmentSteel #HeavySteelPlates #EngineeringSteelPlates
#IndustrialFabricationSteel #PowerPlantSteelPlates #PetrochemicalSteelPlates
#RefinerySteelPlates #ASMESteelPlates #SteelPlateStockist #CustomSteelPlates
#GradeBSteelPlate #GradeCSteelPlate #LadhaniMetals #SteelPlateSolutions #Mumbai
#Delhi #Chennai #Kolkata #Bengaluru #Hyderabad #Ahmedabad #Pune #Surat #Jaipur
#Lucknow #Kanpur #Nagpur #Indore #Srinagar #Aurangabad #Dhanbad #Amritsar
#NaviMumbai #Allahabad #Ranchi #Howrah #Jabalpur #Gwalior #Vijayawada #Jodhpur
#Raipur #Kota #Guwahati #Chandigarh #Solapur #Hubli #Mysuru #Tiruchirappalli
#Bareilly
@Mumbai @Delhi @Chennai @Kolkata
@Hyderabad @Bengaluru
