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Introduction
ASTM A225 /
A225M covers alloy steel plates intended for use in pressure vessels operating
at high temperatures and under high-pressure conditions. These plates are
manufactured with a manganese-vanadium-nickel composition, providing excellent
strength, toughness, and resistance to thermal stress.
ASTM A225
alloy steel plates are widely used in industries where reliability and
performance under extreme service conditions are critical, especially in
pressure vessels and boilers.
Ladhani
Metal Corporation is a manufacturer, supplier, and exporter of ASTM A225 /
A225M alloy steel pressure vessel plates, delivering high-quality plates for
critical industrial applications.
Applicable Standard
Standard
Specification: ASTM A225 / A225M
Organization: ASTM International
Title: Standard Specification for Pressure Vessel Plates, Alloy Steel,
Manganese-Vanadium-Nickel
This
specification covers alloy steel plates for use in welded boilers and pressure
vessels subjected to elevated temperatures.
Forms of Supply
ASTM A225
alloy steel plates are supplied in the following forms:
Hot rolled
plates
Normalized plates
Quenched and tempered plates
Cut-to-size plates
Supply
Condition
As-rolled
condition
Normalized condition
Quenched and tempered condition
Surface
Finish
Mill finish
Shot blasted
Pickled (if required)
Standard
Sizes
Thickness: 6
mm to 150 mm
Width: Up to 3000 mm
Length: Up to 12000 mm or as required
Grades Covered Under ASTM A225 / A225M
Grade C
Grade D
These grades
differ in mechanical strength and alloying elements, providing flexibility for
various pressure vessel applications.
Chemical Composition of ASTM A225 Alloy Steel Plates
(%)
|
Elements |
Composition, % |
||
|
Grade C |
Grade D |
||
|
Carbon, maxA |
0.25 |
0.20 |
|
|
Manganese, max: |
|||
|
Heat analysis |
1.60 |
1.70 |
|
|
Product analysis |
1.72 |
1.84 |
|
|
Phosphorus, maxA |
0.025 |
0.025 |
|
|
Sulfur, maxA |
0.025 |
0.025 |
|
|
Silicon: |
|||
|
Heat analysis |
0.15–0.40 |
0.10–0.50 |
|
|
Product analysis |
0.13–0.45 |
0.08–0.56 |
|
|
Vanadium: |
|||
|
Heat analysis |
0.13–0.18 |
0.10–0.18 |
|
|
Product analysis |
0.11–0.20 |
0.08–0.20 |
|
|
Nickel: |
|||
|
Heat analysis |
0.40–0.70 |
0.40–0.70 |
|
|
Product analysis |
0.37–0.73 |
0.37–0.73 |
A Applies to both heat and product
analyses.
Tensile Requirements
|
Grade C |
Grade D |
|||
|
ksi |
[MPa] |
ksi |
[MPa] |
|
|
Tensile strength: |
||||
|
All thicknesses |
105–135 |
[725–930] |
— |
— |
|
3 in. [75 mm] and under |
— |
— |
80–105 |
[550–725] |
|
Over 3 in. [75 mm] |
— |
— |
75–100 |
[515–690] |
|
Yield strength, min:A |
||||
|
All thicknesses |
70 |
[485] |
— |
— |
|
3 in. [75 mm] and under |
— |
— |
60 |
[415] |
|
Over 3 in. [75 mm] |
— |
— |
55 |
[380] |
|
Elongation in 8 in. [200 mm], min, %B |
— |
— |
— |
— |
|
Elongation in 2 in. [50 mm], min, %B |
20 |
— |
19 |
— |
|
Elongation in 5D, min, %B |
17 |
— |
17 |
— |
A Determined by either the 0.2% offset
method or the 0.5% extension-under-load method.
B See Specification A20/A20M for
elongation adjustment.
Key Features of ASTM A225 Alloy Steel Plates
Suitable for
high-temperature and high-pressure service
Excellent strength and toughness
Good resistance to thermal stress and fatigue
Enhanced durability due to manganese, vanadium, and nickel content
Good weldability with proper procedures
Reliable performance in pressure vessel applications
Applications of ASTM A225 Alloy Steel Plates
ASTM A225
plates are widely used in industries requiring strength, toughness, and
pressure resistance.
Pressure
Vessels
• High-pressure storage tanks
• Industrial pressure vessels
Power Plants
• Boiler components
• Steam drums
Petrochemical
Industry
• Reactor vessels
• Process equipment
Oil &
Gas Industry
• Refinery vessels
• Storage tanks
Heat Treatment
Plates are
typically supplied in normalized or quenched and tempered condition
Heat treatment improves mechanical strength and toughness
Ensures uniform grain structure and enhanced performance
Conclusion
ASTM A225 /
A225M alloy steel pressure vessel plates provide a reliable solution for
high-temperature and high-pressure applications. With excellent strength,
toughness, and resistance to thermal stress, these plates are ideal for
critical pressure vessel and boiler components.
Ladhani
Metal Corporation supplies ASTM A225 / A225M alloy steel plates in various
grades and sizes, ensuring high-quality products for power plants,
petrochemical industries, and industrial pressure applications.
FOR REQUIREMENT OF THIS GRADE OR FOR DETAIL CONTACT US AT :-
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