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Introduction
ASTM A656
/ A656M covers hot-rolled high-strength low-alloy (HSLA) steel plates with
improved formability intended for structural applications requiring high
strength, excellent toughness, superior weldability, and reduced weight. These
plates are produced using microalloying technology and controlled rolling
practices to achieve enhanced mechanical properties without the need for
additional heat treatment.
ASTM A656
alloy steel plates are widely used in construction equipment, transportation
equipment, heavy machinery, mining equipment, agricultural machinery, truck
frames, crane components, and structural engineering projects. The combination
of high yield strength and good formability allows manufacturers to reduce
material thickness while maintaining structural performance, resulting in
lighter and more economical designs.
Due to
their excellent strength-to-weight ratio and fabrication characteristics, ASTM
A656 plates are commonly selected for demanding structural applications where
durability, reliability, and weight reduction are important considerations.
Ladhani
Metal Corporation is a manufacturer, supplier, and exporter of ASTM A656 /
A656M Alloy Steel Plates, supplying premium-quality HSLA steel plates for
structural, industrial, and engineering applications worldwide.
Applicable Standard
Standard
Specification: ASTM A656 / A656M
Organization:
ASTM International
Title:
Standard Specification for Hot-Rolled Structural Steel, High-Strength Low-Alloy
Plate with Improved Formability
This
specification covers hot-rolled high-strength low-alloy steel plates intended
for structural applications requiring improved formability and high strength.
Forms of Supply
ASTM A656
steel products are supplied in the following forms:
• Alloy
steel plates
• HSLA steel plates
• Structural steel plates
• Hot rolled plates
• Heavy thickness plates
• Cut-to-size plates
• CNC-cut plates
• Flame-cut plates
• Fabrication-ready plates
• Structural components
• Engineering plates
• Custom-sized plates
Grades Covered Under
ASTM A656 / A656M
• Grade
50
• Grade 60
• Grade 70
• Grade 80
Supply Condition
• Hot
rolled
• As rolled
• Controlled rolled
• Thermomechanically processed
• Stress relieved (when specified)
• Fabrication-ready condition
Surface Finish
• Mill
finish
• Hot rolled finish
• Shot blasted finish
• Pickled finish
• Ground finish
• Fabrication finish
Standard Sizes
Plates
Thickness:
4 mm to 100 mm
Width:
1000 mm to 3500 mm
Length:
Up to 12000 mm
Custom
dimensions and processed plate components are available according to customer
requirements.
Chemical Composition
of ASTM A656 / A656M
|
Element |
Type 3 (%) |
Type 7 (%) |
|
Carbon, max |
0.18 |
0.18 |
|
Manganese, max |
1.65 |
1.65 |
|
Phosphorus, max |
0.025 |
0.025 |
|
Sulfur, max |
0.035 |
0.035 |
|
Silicon, max |
0.60 |
0.60 |
|
Vanadium |
0.08 |
0.15ᴀ |
|
Nitrogen |
0.020 |
0.020 |
|
Columbium |
0.008–0.10 |
0.10 maxᴀ |
Note A: The contents of columbium and
vanadium shall additionally comply with one of the following:
- Columbium
0.008–0.10% with vanadium < 0.008%, or
- Columbium
< 0.008% with vanadium 0.008–0.15%, or
- Columbium
0.008–0.10% with vanadium 0.008–0.15% and columbium plus vanadium not in
excess of 0.20%.
Tensile
Requirements
|
Property |
Grade 50 [345] |
Grade 60 [415] |
Grade 70 [485] |
Grade 80 [550] |
|
Yield Point, min,
ksi [MPa] |
50 [345] |
60 [415] |
70 [485] |
80 [550] |
|
Tensile Strength,
min, ksi [MPa] |
60 [415] |
70 [485] |
80 [550] |
90 [620] |
|
Elongation in 8
in. [200 mm], min, % |
20 |
17 |
14 |
12 |
|
Elongation in 2
in. [50 mm], min, % |
23 |
20 |
17 |
15 |
Key Features of ASTM
A656 / A656M Plates
• High
strength-to-weight ratio
• Excellent formability
• Superior weldability
• Good toughness
• Reduced structural weight
• Excellent fabrication characteristics
• Improved dimensional stability
• Uniform mechanical properties
• Good impact resistance
• Long service life
Applications of ASTM
A656 / A656M Plates
Construction Equipment Industry
•
Excavators
• Loaders
• Bulldozers
• Structural equipment components
Transportation Industry
• Truck
frames
• Trailer chassis
• Railway equipment
• Heavy transport vehicles
Mining Industry
• Mining
equipment
• Material handling systems
• Structural supports
• Heavy-duty machinery
Agricultural Equipment Industry
• Farm
machinery
• Agricultural implements
• Equipment frames
• Structural components
Material Handling Industry
• Crane
structures
• Lifting equipment
• Storage systems
• Industrial handling equipment
Structural Engineering
•
Structural frameworks
• Heavy fabricated structures
• Industrial buildings
• Infrastructure projects
Fabrication and
Welding
ASTM A656
alloy steel plates provide excellent fabrication and welding performance.
•
Suitable for conventional welding processes
• Excellent bending and forming characteristics
• Good machinability
• Suitable for cold-forming applications
• Reliable performance in welded structures
• Excellent dimensional consistency
Proper
welding procedures should be followed to achieve optimum structural
performance.
Heat Treatment
ASTM A656
plates are generally supplied in the as-rolled condition and do not normally
require heat treatment.
• Controlled
rolling develops required mechanical properties
• Thermomechanical processing enhances strength and toughness
• Stress relieving may be performed after fabrication if required
• Uniform processing ensures consistent performance
• Additional heat treatment is generally unnecessary for normal applications
Advantages of ASTM
A656 / A656M Plates
• Reduced
structural weight
• High load-carrying capacity
• Excellent weldability and formability
• Improved fabrication efficiency
• Lower overall material consumption
• Good toughness and durability
• Cost-effective structural solution
• Consistent mechanical performance
• Suitable for demanding applications
• Long operational life
Conclusion
ASTM A656
/ A656M Alloy Steel Plates are high-strength low-alloy structural steel plates
developed for applications requiring superior strength, excellent formability,
and reliable structural performance. Their combination of high yield strength,
weldability, and reduced weight makes them ideal for construction equipment,
transportation systems, mining machinery, agricultural equipment, and heavy
structural fabrication projects.
Ladhani Metal Corporation
supplies ASTM A656 / A656M alloy steel plates in various grades, thicknesses,
and customized dimensions, providing dependable material solutions for
structural, industrial, and engineering applications worldwide.
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