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ASTM A724 / A724M Pressure Vessel Plates: Carbon-Manganese Silicon Steel - Specification, Grades & Properties

FOR REQUIREMENT OF THIS GRADE OR FOR DETAIL CONTACT US AT :-

www.ladhanimetal.com

www.ladhanimetal.in

ladhanimetal@gmail.com

info@ladhanimetals.com


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
ksi [MPa]

Grade B
ksi [MPa]

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 OR FOR DETAIL CONTACT US AT :-

www.ladhanimetal.com

www.ladhanimetal.in

ladhanimetal@gmail.com

info@ladhanimetals.com


















 

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 2026-07-09T11:56:45

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