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Introduction
EN
10137-2 covers plates and wide flats made of high yield strength structural
steels in the quenched and tempered condition. These steels are designed to
provide high yield strength, excellent toughness, good weldability, and
reliable performance in heavy-duty structural and engineering applications.
EN
10137-2 high yield strength structural steel plates and wide flats are used
where high strength and reduced structural weight are required. They are
suitable for heavy machinery, cranes, bridges, transportation equipment,
pressure-supporting structures, industrial plants, and general engineering
applications.
Ladhani
Metal Corporation is a manufacturer, supplier, and exporter of EN 10137-2 High
Yield Strength Structural Steel Plates and Wide Flats, supplying products in
various grades, thicknesses, widths, lengths, surface finishes, and customized
dimensions worldwide.
Applicable Standard
Standard
Specification: EN 10137-2
Organization:
European Committee for Standardization (CEN)
Title:
Plates and Wide Flats Made of High Yield Strength Structural Steels in the
Quenched and Tempered Condition
Material
Type: High Yield Strength Structural Steel
Product
Forms: Plates and Wide Flats
Material Type
•
High Yield Strength Structural Steel
• Quenched and Tempered Structural Steel
• Weldable Fine-Grain Structural Steel
• High-Strength Low-Alloy Structural Steel
• Heavy-Duty Structural Steel
Forms of Supply
•
Structural Steel Plates
• High Yield Strength Steel Plates
• Quenched and Tempered Plates
• Wide Flats
• Heavy Structural Plates
• Cut-to-Length Plates
• Custom Width Plates
• Custom Length Plates
Grades Covered Under EN 10137-2
S690Q
| S690QL | S690QL1 | S890Q | S890QL | S960Q | S960QL
Grade Designation
S690Q:
Structural steel with a minimum yield strength of 690 MPa in the quenched and
tempered condition.
S690QL:
High-strength structural steel with specified low-temperature impact toughness.
S690QL1:
High-strength structural steel with enhanced low-temperature impact toughness.
S890Q:
Structural steel with a minimum yield strength of 890 MPa in the quenched and
tempered condition.
S890QL:
High-strength structural steel with improved low-temperature toughness.
S960Q:
Ultra-high-strength structural steel with a minimum yield strength of 960 MPa.
S960QL:
Ultra-high-strength structural steel with specified low-temperature impact
toughness.
Supply Condition
•
Quenched and Tempered
• Heat Treated
• Normalized where applicable
• Stress Relieved where permitted
Surface Finish
•
Hot Rolled Finish
• Mill Finish
• Shot Blasted Finish
• Descaled Finish
• Pickled Finish
• Smooth Finish
• Primer Coated where required
Standard Sizes
EN 10137-2 Structural Steel Plates
Thickness:
3 mm to 250 mm
Width:
Up to 3,500 mm
Length:
Up to 12,000 mm
EN 10137-2 Wide Flats
Thickness:
According to grade and product dimensions
Width:
According to applicable standard dimensions
Length:
Custom lengths available
Custom
thicknesses, widths, lengths, and cut-to-size plates are available according to
customer requirements.
Chemical Composition of EN 10137-2
Chemical
composition varies according to the selected grade and product thickness.
|
Grade |
C % Max. |
Si % Max. |
Mn % Max. |
P % Max. |
S % Max. |
|
S690Q |
0.20 |
0.80 |
1.70 |
0.025 |
0.015 |
|
S690QL |
0.20 |
0.80 |
1.70 |
0.025 |
0.015 |
|
S690QL1 |
0.20 |
0.80 |
1.70 |
0.025 |
0.015 |
|
S890Q |
0.20 |
0.80 |
1.70 |
0.025 |
0.015 |
|
S890QL |
0.20 |
0.80 |
1.70 |
0.025 |
0.015 |
|
S960Q |
0.20 |
0.80 |
1.70 |
0.025 |
0.015 |
|
S960QL |
0.20 |
0.80 |
1.70 |
0.025 |
0.015 |
Alloying
elements such as chromium, molybdenum, nickel, vanadium, niobium and titanium
may be controlled to obtain the required high strength, toughness,
hardenability and weldability. Exact limits depend on the grade and product
thickness.
Mechanical Properties of EN 10137-2
Mechanical
properties depend on the grade and product thickness.
|
Grade |
Minimum Yield Strength MPa |
Tensile Strength MPa |
Minimum Elongation % |
|
S690Q |
690 |
770–940 |
14 |
|
S690QL |
690 |
770–940 |
14 |
|
S690QL1 |
690 |
770–940 |
14 |
|
S890Q |
890 |
940–1100 |
11 |
|
S890QL |
890 |
940–1100 |
11 |
|
S960Q |
960 |
980–1150 |
10 |
|
S960QL |
960 |
980–1150 |
10 |
Yield
strength and tensile strength requirements may vary with increasing plate
thickness. The applicable EN 10137-2 requirements should be used for certified
values.
Impact Toughness
Impact
toughness is specified according to the grade designation.
Q
Grades: Quenched and tempered structural steels with specified impact
properties.
QL
Grades: Quenched and tempered structural steels with improved low-temperature
impact toughness.
QL1
Grades: Quenched and tempered structural steels intended for particularly
demanding low-temperature service.
The
required Charpy V-notch impact energy and test temperature depend on the
individual grade.
Key Features of EN 10137-2 Structural Steel
•
Very high yield strength
• Excellent tensile strength
• Quenched and tempered condition
• Excellent toughness
• Good weldability
• High strength-to-weight ratio
• Good resistance to brittle fracture
• Suitable for heavy-duty structures
• Reduced structural weight
• Excellent load-bearing capability
Applications of EN 10137-2 Plates & Wide
Flats
Heavy Engineering
•
Heavy Machinery
• Machine Frames
• Industrial Equipment
• Load-Bearing Structures
• Heavy Fabricated Components
Crane Industry
•
Crane Girders
• Crane Booms
• Lifting Equipment
• Mobile Crane Structures
• Heavy-Duty Supports
Construction Industry
•
Structural Frameworks
• Heavy Building Structures
• Support Structures
• Reinforcement Components
• Load-Bearing Members
Bridge Engineering
•
Bridge Girders
• Bridge Plates
• Structural Supports
• Heavy Bridge Components
• Load-Bearing Structures
Transportation Industry
•
Heavy Vehicle Structures
• Trailer Components
• Railway Equipment
• Transportation Machinery
• Specialized Vehicle Components
Industrial & Energy Equipment
•
Industrial Platforms
• Storage Structures
• Power Plant Structures
• Heavy Equipment
• Fabricated Engineering Components
Fabrication and Welding
EN
10137-2 high yield strength structural steels are suitable for fabrication
using controlled welding and forming procedures.
•
Excellent weldability
• Good cutting characteristics
• Suitable for machining
• Controlled bending
• Good dimensional stability
• Suitable for heavy fabrication
• Reliable welded joint performance
Because
of their high strength and quenched and tempered condition, welding heat input,
preheating, interpass temperature, and post-weld procedures should be
controlled according to the grade and thickness.
Heat Treatment
EN
10137-2 grades are primarily supplied in the quenched and tempered condition.
•
Quenching develops high strength
• Tempering provides the required combination of strength and toughness
• Controlled heat treatment refines the microstructure
• Proper tempering reduces excessive brittleness
• Heat-treatment control provides consistent mechanical properties
Advantages of EN 10137-2 Structural Steel
•
Extremely high yield strength
• Excellent strength-to-weight ratio
• Superior load-bearing capacity
• Good toughness
• Excellent performance in heavy structures
• Reduced material weight
• Good weldability with controlled procedures
• Suitable for demanding engineering applications
• Excellent resistance to mechanical stresses
• Long service life
Conclusion
EN
10137-2 High Yield Strength Structural Steel Plates and Wide Flats are quenched
and tempered structural steels developed for applications requiring very high
strength, toughness, weldability, and load-bearing capability. The standard
includes grades S690Q, S690QL, S690QL1, S890Q, S890QL, S960Q, and S960QL.
These
high-strength structural steels are widely used in cranes, bridges, heavy
machinery, transportation equipment, industrial structures, energy projects,
and demanding engineering applications where high strength combined with
reduced structural weight is required.
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