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Introduction
EN 10028-6 Steel Sheet & Plate covers flat
products made of quenched and tempered fine-grain steels for pressure purposes.
These high-strength alloy steel plates are designed to provide excellent yield
strength, tensile strength, toughness, weldability, and resistance to brittle fracture.
EN 10028-6 steel plates are used for pressure
vessels, storage tanks, boilers, reactors, oil and gas equipment, petrochemical
plants, power generation equipment, and other heavy-duty pressure applications
where high strength and reliable low-temperature toughness are required.
Ladhani Metal Corporation is a manufacturer, supplier, and exporter of EN 10028-6 Quenched and Tempered Fine-Grain Steel Sheet & Plate, supplying pressure vessel plates in various grades, thicknesses, widths, lengths, heat-treatment conditions, and customized dimensions worldwide.
Applicable Standard
Standard Specification: EN 10028-6
Organization: European Committee for
Standardization (CEN)
Title: Flat Products Made of Steels for
Pressure Purposes – Part 6: Weldable Fine Grain Steels, Quenched and Tempered
Material Type: Quenched and Tempered Fine-Grain Alloy Steel / Pressure Vessel Steel
Material Type
• Fine-Grain Alloy Steel
• Quenched and Tempered Steel
• Pressure Vessel Steel
• High-Strength Steel
• Weldable Fine-Grain Steel
• Low-Temperature Pressure Vessel Steel
Forms of Supply
• Quenched and Tempered Steel Sheets
• Pressure Vessel Plates
• Alloy Steel Plates
• Fine-Grain Steel Plates
• Boiler Plates
• Reactor Plates
• Heat Exchanger Plates
• Cut-to-Length Plates
• Custom Cut Sheets
Grades Covered Under EN 10028-6
P460Q | P460QL1 | P460QL2 | P500Q | P500QL1 | P500QL2 | P690Q | P690QL1 | P690QL2 | P890Q | P890QL1 | P890QL2 | P960Q | P960QL1 | P960QL2
Supply Condition
• Quenched and Tempered
• Heat Treated Condition
• Normalized and Tempered Condition where applicable
• Stress Relieved Condition where permitted
• Cut-to-Length Condition
Surface Finish
• Hot Rolled Finish
• Mill Finish
• Shot Blasted Finish
• Descaled Finish
• Smooth Finish
• Pickled Finish
Standard Sizes
EN 10028-6 Steel Sheets & Plates
Thickness: 3 mm to 250 mm
Width: Up to 3,500 mm
Length: Up to 12,000 mm
Custom thicknesses, widths, lengths, cut-to-size plates, edge conditions, and surface finishes are available according to customer requirements.
Chemical Composition of EN 10028-6
|
Steel Grade |
C |
Si |
Mn |
P |
S |
N |
B |
Cr |
Mo |
Cu |
Nb |
Ni |
Ti |
V |
Zr |
|
P355Q |
0.16 |
0.40 |
1.50 |
0.025 |
0.010 |
0.015 |
0.005 |
0.30 |
0.25 |
0.30 |
0.05 |
0.50 |
0.03 |
0.06 |
0.05 |
|
P355QH |
0.16 |
0.40 |
1.50 |
0.025 |
0.010 |
0.015 |
0.005 |
0.30 |
0.25 |
0.30 |
0.05 |
0.50 |
0.03 |
0.06 |
0.05 |
|
P355QL1 |
0.16 |
0.40 |
1.50 |
0.020 |
0.008 |
0.015 |
0.005 |
0.30 |
0.25 |
0.30 |
0.05 |
0.50 |
0.03 |
0.06 |
0.05 |
|
P355QL2 |
0.16 |
0.40 |
1.50 |
0.020 |
0.005 |
0.015 |
0.005 |
0.30 |
0.25 |
0.30 |
0.05 |
0.50 |
0.03 |
0.06 |
0.05 |
|
P460Q |
0.18 |
0.50 |
1.70 |
0.025 |
0.010 |
0.015 |
0.005 |
0.50 |
0.50 |
0.30 |
0.05 |
1.00 |
0.03 |
0.08 |
0.05 |
|
P460QH |
0.18 |
0.50 |
1.70 |
0.025 |
0.010 |
0.015 |
0.005 |
0.50 |
0.50 |
0.30 |
0.05 |
1.00 |
0.03 |
0.08 |
0.05 |
|
P460QL1 |
0.18 |
0.50 |
1.70 |
0.020 |
0.008 |
0.015 |
0.005 |
0.50 |
0.50 |
0.30 |
0.05 |
1.00 |
0.03 |
0.08 |
0.05 |
|
P460QL2 |
0.18 |
0.50 |
1.70 |
0.020 |
0.005 |
0.015 |
0.005 |
0.50 |
0.50 |
0.30 |
0.05 |
1.00 |
0.03 |
0.08 |
0.05 |
|
P500Q |
0.18 |
0.60 |
1.70 |
0.025 |
0.010 |
0.015 |
0.005 |
1.00 |
0.70 |
0.30 |
0.05 |
1.50 |
0.05 |
0.08 |
0.15 |
|
P500QH |
0.18 |
0.60 |
1.70 |
0.025 |
0.010 |
0.015 |
0.005 |
1.00 |
0.70 |
0.30 |
0.05 |
1.50 |
0.05 |
0.08 |
0.15 |
|
P500QL1 |
0.18 |
0.60 |
1.70 |
0.020 |
0.008 |
0.015 |
0.005 |
1.00 |
0.70 |
0.30 |
0.05 |
1.50 |
0.05 |
0.08 |
0.15 |
|
P500QL2 |
0.18 |
0.60 |
1.70 |
0.020 |
0.005 |
0.015 |
0.005 |
1.00 |
0.70 |
0.30 |
0.05 |
1.50 |
0.05 |
0.08 |
0.15 |
|
P690Q |
0.20 |
0.80 |
1.70 |
0.025 |
0.010 |
0.015 |
0.005 |
1.50 |
0.70 |
0.30 |
0.06 |
2.50 |
0.05 |
0.12 |
0.15 |
|
P690QH |
0.20 |
0.80 |
1.70 |
0.025 |
0.010 |
0.015 |
0.005 |
1.50 |
0.70 |
0.30 |
0.06 |
2.50 |
0.05 |
0.12 |
0.15 |
|
P690QL1 |
0.20 |
0.80 |
1.70 |
0.020 |
0.008 |
0.015 |
0.005 |
1.50 |
0.70 |
0.30 |
0.06 |
2.50 |
0.05 |
0.12 |
0.15 |
|
P690QL2 |
0.20 |
0.80 |
1.70 |
0.020 |
0.005 |
0.015 |
0.005 |
1.50 |
0.70 |
0.30 |
0.06 |
2.50 |
0.05 |
0.12 |
0.15 |
Maximum contents, % by
mass.
Notes:
a. Elements not listed in the table shall not be intentionally added to the
steel without the agreement of the purchaser, except for finishing the cast.
b. The manufacturer may add one or several alloying elements up to the
specified maximum values according to product thickness and steelmaking
conditions.
c. A lower maximum copper content and/or maximum sum of copper and tin may be
agreed upon at the time of enquiry and order.
d. The percentage of grain-refining elements shall be at least 0.015%.
Aluminium is also included in these elements.
Mechanical Properties of EN 10028-6
Mechanical properties vary according to grade
and plate thickness.
|
Grade |
Yield Strength
MPa |
Tensile
Strength MPa |
Elongation % |
|
P460Q |
≥460 |
570–720 |
≥17 |
|
P460QL1 |
≥460 |
570–720 |
≥17 |
|
P460QL2 |
≥460 |
570–720 |
≥17 |
|
P500Q |
≥500 |
590–770 |
≥16 |
|
P500QL1 |
≥500 |
590–770 |
≥16 |
|
P500QL2 |
≥500 |
590–770 |
≥16 |
|
P690Q |
≥690 |
770–940 |
≥14 |
|
P690QL1 |
≥690 |
770–940 |
≥14 |
|
P690QL2 |
≥690 |
770–940 |
≥14 |
|
P890Q |
≥890 |
940–1100 |
≥11 |
|
P960Q |
≥960 |
980–1150 |
≥10 |
Yield strength and tensile requirements can vary with product thickness. The applicable thickness range should therefore be considered when selecting the grade.
Key Features of EN 10028-6 Steel
Sheet & Plate
• Very high yield strength
• High tensile strength
• Fine-grain microstructure
• Excellent toughness
• Good weldability
• High resistance to brittle fracture
• Excellent pressure-bearing capability
• Suitable for heavy-duty pressure equipment
• Good dimensional stability
• Reliable performance under demanding service conditions
Applications of EN 10028-6 Steel
Sheet & Plate
Pressure Vessel Industry
• High-Pressure Vessels
• Storage Tanks
• Reactor Vessels
• Process Vessels
• High-Strength Pressure Equipment
Oil & Gas Industry
• Oil Storage Equipment
• Gas Processing Equipment
• Pressure Vessels
• Separators
• High-Pressure Processing Equipment
Petrochemical Industry
• Refinery Equipment
• Process Vessels
• Storage Tanks
• Heat Exchangers
• High-Pressure Processing Equipment
Power Generation Industry
• Boilers
• Steam Equipment
• Pressure Components
• Heat Exchangers
• Power Plant Equipment
Heavy Engineering
• Heavy-Duty Pressure Equipment
• Large Storage Tanks
• Industrial Machinery
• Engineered Pressure Components
• High-Strength Fabricated Structures
Fabrication and Welding
EN 10028-6 plates provide good weldability
when appropriate welding procedures are followed.
• Suitable for controlled welding processes
• Good fabrication characteristics
• Good bending performance within specified limits
• Suitable for pressure vessel fabrication
• Excellent strength-to-weight performance
• Reliable welded joint performance
Because these are high-strength quenched and tempered steels, welding parameters, preheating, interpass temperature, heat input, and post-weld heat treatment should be controlled according to the grade and thickness.
Heat Treatment
EN 10028-6 products are supplied in the
quenched and tempered condition.
• Quenching increases strength
• Tempering improves toughness
• Controlled heat treatment refines the microstructure
• Proper tempering reduces brittleness
• Heat treatment provides uniform mechanical properties
• Controlled processing improves resistance to brittle fracture
Additional heat treatment should be carefully controlled because excessive heating can affect the properties obtained through quenching and tempering.
Advantages of EN 10028-6 Steel
Sheet & Plate
• Very high strength
• Excellent pressure-bearing capability
• High strength-to-weight ratio
• Excellent toughness
• Good weldability
• Fine-grain structure
• Good resistance to brittle fracture
• Suitable for high-pressure applications
• Available in multiple strength classes
• Reliable long-term performance
Conclusion
EN 10028-6 Steel Sheet & Plate covers
weldable fine-grain steels in the quenched and tempered condition for pressure
purposes. The standard includes P460Q, P500Q, P690Q, P890Q, and P960Q strength
classes together with their QL1 and QL2 low-temperature toughness grades.
Ladhani Metal Corporation supplies EN 10028-6 Quenched and Tempered Fine-Grain Steel Sheet & Plate in P460Q, P460QL1, P460QL2, P500Q, P500QL1, P500QL2, P690Q, P690QL1, P690QL2, P890Q, P890QL1, P890QL2, P960Q, P960QL1, and P960QL2 grades, with various thicknesses, widths, lengths, surface finishes, heat-treatment conditions, and customized dimensions for pressure vessels, oil and gas equipment, petrochemical plants, power generation, storage tanks, and heavy engineering applications worldwide.
FOR REQUIREMENT OF THIS GRADE
OR FOR DETAIL CONTACT US AT :-
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