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Introduction
ASME
SA-372 covers carbon and alloy steel forgings specifically manufactured for
thin-walled pressure vessels operating under high-pressure service conditions.
These forgings are designed to provide excellent mechanical strength,
toughness, durability, and resistance to fatigue, making them suitable for
demanding industrial applications. Carbon and alloy steel forgings manufactured
to SA-372 offer reliable performance under elevated pressures while maintaining
excellent machinability and weldability.
ASME
SA-372 carbon and alloy steel forgings are widely used in pressure vessel
manufacturing, oil & gas industries, petrochemical plants, refineries,
power generation facilities, chemical processing plants, and heavy engineering
applications. Their superior mechanical properties and structural integrity
ensure safe and dependable operation in critical pressure systems.
The
specification ensures controlled chemical composition, excellent mechanical
properties, superior forging quality, and dimensional accuracy for pressure
vessel applications.
Ladhani
Metal Corporation is a manufacturer, supplier, and exporter of ASME SA-372
Carbon and Alloy Steel Forgings, supplying premium-quality forged products for
pressure vessels, oil & gas, petrochemical, power generation, and
industrial engineering applications worldwide.
Applicable Standard
Standard
Specification: ASME SA-372
Organization:
American Society of Mechanical Engineers (ASME)
Title:
Carbon and Alloy Steel Forgings for Thin-Walled Pressure Vessels
This
specification covers carbon and alloy steel forgings intended for thin-walled
pressure vessels requiring high strength, excellent toughness, and reliable
performance under pressure.
Forms of Supply
ASME
SA-372 products are supplied in the following forms:
•
Forged Rings
• Forged Discs
• Forged Blocks
• Forged Shafts
• Forged Hollow Cylinders
• Forged Flanges
• Forged Sleeves
• Forged Components
• Rough Machined Forgings
• Finished Machined Forgings
• Custom Forgings
Supply Condition
•
Forged Condition
• Normalized Condition
• Quenched and Tempered Condition
• Annealed Condition
• Stress Relieved Condition
• Rough Machined Condition
• Finished Machined Condition
Surface Finish
•
Forged Finish
• Rough Machined Finish
• Precision Machined Finish
• Shot Blasted Finish
• Ground Finish
• Protective Coated Finish
Standard Sizes
Forgings
Outside
Diameter: Up to 3000 mm
Thickness:
Up to 1000 mm
Weight:
Up to 25 MT
Custom
dimensions, profiles, machining allowances, and forged components are available
according to customer requirements.
Chemical Composition of ASME SA-372
|
Element |
Grade A |
Grade B |
Grade C |
Grade D |
|
Carbon |
0.30 max |
0.35 max |
0.48 max |
0.40–0.50 |
|
Manganese |
1.00 max |
1.35 max |
1.65 max |
1.40–1.80 |
|
Phosphorus, max |
0.025 |
0.025 |
0.025 |
0.025 |
|
Sulfur, max |
0.025 |
0.025 |
0.025 |
0.025 |
|
Silicon |
0.15–0.35 |
0.15–0.35 |
0.15–0.35 |
0.15–0.35 |
|
Nickel |
— |
— |
— |
— |
|
Chromium |
— |
— |
— |
— |
|
Molybdenum |
— |
— |
— |
0.17–0.27 |
|
Element |
Grade E (Classes 55, 65, 70) |
Grade F (Classes 55, 65, 70) |
Grade G (Classes 55, 65, 70) |
Grade H (Classes 55, 65, 70) |
Grade J (Classes 55, 65, 70, 110) |
|
Carbon |
0.25–0.35 |
0.30–0.40 |
0.25–0.35 |
0.30–0.40 |
0.35–0.50 |
|
Manganese |
0.40–0.90 |
0.70–1.00 |
0.70–1.00 |
0.75–1.05 |
0.75–1.05 |
|
Phosphorus, max |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
|
Sulfur, max |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
|
Silicon |
0.15–0.35 |
0.15–0.35 |
0.15–0.35 |
0.15–0.35 |
0.15–0.35 |
|
Nickel |
— |
— |
— |
— |
— |
|
Chromium |
0.80–1.15 |
0.80–1.15 |
0.40–0.65 |
0.40–0.65 |
0.80–1.15 |
|
Molybdenum |
0.15–0.25 |
0.15–0.25 |
0.15–0.25 |
0.15–0.25 |
0.15–0.25 |
|
Element |
Grade K |
Grade L |
Grade M (Classes A & B) |
|
Carbon |
0.18 max |
0.38–0.43 |
0.23 max |
|
Manganese |
0.10–0.40 |
0.60–0.80 |
0.20–0.40 |
|
Phosphorus, max |
0.025 max |
0.025 |
0.020 |
|
Sulfur, max |
0.025 max |
0.025 |
0.020 |
|
Silicon |
0.15–0.35 |
0.15–0.35 |
0.30 max |
|
Nickel |
2.0–3.3 |
1.65–2.00 |
2.8–3.9 |
|
Chromium |
1.00–1.80 |
0.70–0.90 |
1.50–2.00 |
|
Molybdenum |
0.20–0.60 |
0.20–0.30 |
0.40–0.60 |
|
Vanadium |
— |
— |
0.08 max |
Mechanical Properties
|
Type |
Tensile
Strength, ksi [MPa] |
Yield Strength
(0.2% Offset), ksi [MPa], min |
Elongation in
2 in. [50 mm], min, % |
Hardness, HB,
min* |
|
Grade A |
60–85 [415–585] |
35 [240] |
20 |
121 |
|
Grade B |
75–100 [515–690] |
45 [310] |
18 |
156 |
|
Grade C |
90–115 [620–795] |
55 [380] |
15 |
187 |
|
Grade D |
105–130 [725–895] |
65 [450] |
15 |
217 |
|
Grades E, F,
G, H, J (Class 55) |
85–110 [545–760] |
55 [380] |
20 |
179 |
|
Grades E, F,
G, H, J (Class 65) |
105–130 [725–895] |
65 [450] |
19 |
217 |
|
Grades E, F,
G, H, J (Class 70) |
120–145 [825–1000] |
70 [485] |
18 |
248 |
|
Grade J (Class
110) |
135–160 [930–1100] |
110 [760] |
15 |
277 |
|
Grade K |
100–125 [690–860] |
80 [550] |
20 |
207 |
|
Grade L |
155–180 [1070–1240] |
135 [930] |
12 |
311 |
|
Grade M (Class
A) |
105–130 [725–895] |
85 [585] |
18 |
217 |
|
Grade M (Class
B) |
120–145 [825–1000] |
100 [690] |
16 |
248 |
Mechanical property
requirements vary according to the selected class, section size, and heat
treatment.
Key Features of
ASME SA-372 Carbon and Alloy Steel Forgings
•
High mechanical strength
• Excellent toughness
• Superior pressure resistance
• Good fatigue resistance
• Excellent machinability
• Good weldability
• Reliable dimensional stability
• High structural integrity
• Long service life
• Suitable for high-pressure applications
Applications of
ASME SA-372 Carbon and Alloy Steel Forgings
Pressure Vessel Industry
•
Thin-Walled Pressure Vessels
• High-Pressure Cylinders
• Pressure Containment Components
• Forged Vessel Parts
Oil & Gas Industry
•
Pressure Equipment
• Process Systems
• High-Pressure Components
• Refinery Equipment
Petrochemical Industry
•
Pressure Reactors
• Process Vessels
• Heat Exchanger Components
• Industrial Pressure Systems
Power Generation Industry
•
Boiler Components
• Steam Pressure Equipment
• Turbine Components
• Power Plant Forgings
Heavy Engineering
•
Forged Mechanical Components
• Industrial Machinery
• Engineering Equipment
• Structural Forgings
Fabrication and
Machining
ASME
SA-372 forgings provide excellent machining and fabrication characteristics.
•
Suitable for precision machining
• Good dimensional stability
• Excellent mechanical integrity
• Reliable heat treatment response
• Suitable for heavy-duty engineering applications
• Easy fabrication into finished components
Proper
machining and heat treatment procedures should be followed to achieve the
required mechanical properties.
Heat Treatment
ASME
SA-372 forgings are supplied in heat-treated conditions according to the
specified class.
•
Normalizing improves toughness
• Quenching and tempering enhances strength
• Annealing improves machinability
• Stress relieving minimizes residual stresses
• Controlled heat treatment ensures uniform mechanical properties
Advantages of ASME
SA-372 Carbon and Alloy Steel Forgings
•
High strength-to-weight ratio
• Excellent pressure resistance
• Superior toughness
• Reliable mechanical performance
• Long operational life
• Good machinability
• Excellent structural integrity
• Low maintenance requirements
• Suitable for critical pressure applications
• Cost-effective forging solution
Conclusion
ASME
SA-372 Carbon and Alloy Steel Forgings are engineered for thin-walled pressure
vessels and high-pressure industrial applications requiring superior strength,
toughness, and reliability. Ladhani Metal Corporation supplies ASME SA-372
Carbon and Alloy Steel Forgings in various classes, sizes, heat-treated
conditions, and customized dimensions, delivering reliable forged solutions for
pressure vessel, refinery, power generation, and industrial engineering
projects worldwide.
FOR REQUIREMENT OF THIS GRADE
OR FOR DETAIL CONTACT US AT :-
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