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Introduction
ASTM A724 / A724M covers
carbon-manganese-silicon steel plates intended for welded pressure vessels and
boilers requiring moderate to high strength, excellent weldability, good notch
toughness, and reliable performance under pressure service conditions. The
controlled addition of manganese and silicon enhances the mechanical properties
while maintaining excellent fabrication characteristics.
ASTM A724 pressure vessel
plates are widely used in pressure vessels, boilers, heat exchangers, storage
tanks, petrochemical plants, refineries, power generation facilities,
fertilizer plants, and process equipment. Their excellent combination of
strength, toughness, and weldability makes them suitable for applications
involving elevated temperatures and internal pressure.
The specification ensures
consistent mechanical properties, high structural integrity, and dependable
long-term performance for critical pressure-retaining equipment operating in
demanding industrial environments.
Ladhani Metal Corporation is
a manufacturer, supplier, and exporter of ASTM A724 / A724M Pressure Vessel
Plates, Carbon-Manganese-Silicon Steel, supplying premium-quality steel plates
for pressure vessel, boiler, and industrial engineering applications worldwide.
Applicable Standard
Standard Specification: ASTM
A724 / A724M
Organization: ASTM
International
Title: Standard Specification
for Pressure Vessel Plates, Carbon-Manganese-Silicon Steel
This specification covers
carbon-manganese-silicon steel plates intended for welded pressure vessels and
boilers requiring improved mechanical properties and reliable performance.
Forms of Supply
ASTM A724 steel products are
supplied in the following forms:
• Pressure vessel plates
• Boiler quality steel plates
• Carbon-manganese-silicon steel plates
• Heavy thickness plates
• Hot rolled plates
• Cut-to-length plates
• CNC-cut plates
• Flame-cut plates
• Fabrication-ready plates
• Industrial steel plates
• Engineering plates
• Custom-sized plates
Grades Covered Under
ASTM A724 / A724M
• Grade A
• Grade B
Supply Condition
• Hot rolled
• Normalized
• Stress relieved (when specified)
• As rolled (where applicable)
• 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 A724 / A724M
|
Element |
Analysis |
Grade A |
Grade B |
Grade C |
|
Carbon, max |
Heat analysis |
0.18 |
0.20 |
0.22 |
|
Product analysis |
0.22 |
0.24 |
0.26 |
|
|
Manganese |
Heat analysis |
1.00–1.60 |
1.00–1.60 |
1.10–1.60 |
|
Product analysis |
0.92–1.72 |
0.92–1.72 |
1.02–1.72 |
|
|
Phosphorus, max |
— |
0.025 |
0.025 |
0.025 |
|
Sulfur, max |
— |
0.025 |
0.025 |
0.025 |
|
Silicon, max |
Heat analysis |
0.55 |
0.50 |
0.20–0.60 |
|
Product analysis |
0.60 |
0.55 |
0.18–0.65 |
|
|
Copper, max |
Heat analysis |
0.35 |
0.35 |
0.35 |
|
Product analysis |
0.38 |
0.38 |
0.38 |
|
|
Nickel, max |
Heat analysis |
0.25 |
0.25 |
0.25 |
|
Product analysis |
0.28 |
0.28 |
0.28 |
|
|
Chromium, max |
Heat analysis |
0.25 |
0.25 |
0.25 |
|
Product analysis |
0.29 |
0.29 |
0.29 |
|
|
Molybdenum, max |
Heat analysis |
0.08 |
0.08 |
0.08 |
|
Product analysis |
0.09 |
0.09 |
0.09 |
|
|
Vanadium, max |
Heat analysis |
0.08 |
0.08 |
0.08 |
|
Product analysis |
0.09 |
0.09 |
0.09 |
|
|
Boron, max |
— |
— |
— |
0.005 |
Notes
A: Applies to both heat and product
analyses.
B: When analysis shows that the
amount of an element is 0.02% or lower,
the value may be reported as <0.02%.
C: If boron is less than 0.001%, the analysis report for the element may be stated
as <0.001%.
Note 1: Where "—" appears in this table, there is no requirement.
Tensile Requirement
|
Mechanical Property |
Grades A & C |
Grade B |
|
Tensile
Strength |
90–110
[620–760] |
95–115
[655–795] |
|
Yield
Strength, min |
70 [485] |
75 [515] |
|
Elongation
in 2 in. [50 mm], min, % |
19 |
17 |
Mechanical properties may
vary depending on plate thickness and heat treatment condition.
Key Features of ASTM
A724 / A724M Plates
• Excellent weldability
• Good notch toughness
• High mechanical strength
• Superior pressure resistance
• Excellent fabrication characteristics
• Good formability
• Reliable dimensional stability
• Long service life
• Suitable for elevated temperature service
• Consistent mechanical performance
Applications of ASTM
A724 / A724M Plates
Pressure Vessel Industry
• Pressure vessels
• Reactor vessels
• Separator vessels
• Process vessels
Boiler Industry
• Steam boilers
• Boiler drums
• Water tube boilers
• Boiler components
Petrochemical Industry
• Process equipment
• Storage vessels
• Refinery equipment
• Chemical reactors
Power Generation Industry
• Boiler systems
• Heat recovery units
• Pressure equipment
• Thermal power plants
Oil and Gas Industry
• Pressure tanks
• Processing equipment
• Storage systems
• Pipeline equipment
Industrial Manufacturing
• Heat exchangers
• Industrial tanks
• Fabricated pressure equipment
• Engineering components
Fabrication and
Welding
ASTM A724 pressure vessel
steel plates offer excellent fabrication and welding characteristics.
• Suitable for conventional
welding processes
• Excellent forming properties
• Good machining performance
• Suitable for heavy fabrication work
• Excellent dimensional accuracy
• Reliable welded joint performance
Proper welding procedures and
post-weld heat treatment should be followed when required by the application.
Heat Treatment
ASTM A724 plates may be
supplied in different heat-treated conditions depending on customer requirements.
• Normalizing improves
toughness and grain refinement
• Stress relieving reduces residual stresses after fabrication
• Controlled rolling ensures consistent mechanical properties
• Heat treatment enhances pressure vessel performance
• Proper thermal processing improves service reliability
Advantages of ASTM
A724 / A724M Plates
• Excellent pressure
resistance
• High structural integrity
• Superior weldability
• Good impact toughness
• Excellent fabrication performance
• Reliable mechanical properties
• Long operational life
• Suitable for critical pressure equipment
• Cost-effective engineering solution
• Consistent material quality
Conclusion
ASTM A724 / A724M Pressure
Vessel Plates, Carbon-Manganese-Silicon Steel, are high-quality steel plates
developed for welded pressure vessels, boilers, heat exchangers, storage tanks,
and process equipment requiring dependable strength, toughness, and
weldability. Available in Grade A and Grade B, these plates provide reliable
performance in power generation, petrochemical, refinery, oil and gas, and
industrial processing applications.
Ladhani Metal Corporation
supplies ASTM A724 / A724M pressure vessel plates in various grades,
thicknesses, surface finishes, and customized dimensions, delivering dependable
material solutions for pressure vessel, boiler, and industrial engineering
projects worldwide.
FOR REQUIREMENT OF THIS GRADE
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