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Introduction
EN 10028-5 Steel Sheet &
Plate covers flat products made of thermomechanically rolled fine-grain steels
for pressure purposes. These are low-alloy pressure vessel steels developed to
provide high strength, good weldability, excellent toughness, and reliable
performance under pressure and demanding service conditions.
EN 10028-5 steels are mainly
used for pressure vessels, boilers, storage tanks, heat exchangers, oil and gas
equipment, petrochemical plants, and heavy engineering applications. The
thermomechanical rolling process provides a refined grain structure and
favorable strength-to-weight performance.
Ladhani Metal Corporation is
a manufacturer, supplier, and exporter of EN 10028-5 Thermomechanically Rolled
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
10028-5
Organization: European
Committee for Standardization (CEN)
Title: Flat Products Made of
Steels for Pressure Purposes – Part 5: Thermomechanically Rolled Weldable Fine
Grain Steels
Material Type: Fine-Grain
Alloy Steel / Pressure Vessel Steel
Material Type
• Fine-Grain Steel
• Alloy Steel
• Thermomechanically Rolled Steel
• Pressure Vessel Steel
• Weldable Steel
• High-Strength Pressure Vessel Steel
Forms of Supply
• Thermomechanically Rolled
Steel Sheets
• Pressure Vessel Plates
• Alloy Steel Plates
• Fine-Grain Steel Plates
• Boiler Plates
• Heat Exchanger Plates
• Hot Rolled Plates
• Cut-to-Length Plates
• Custom Cut Sheets
Grades Covered Under EN 10028-5
P275M | P275ML | P355M |
P355ML | P420M | P420ML | P460M | P460ML
Supply Condition
• Thermomechanically Rolled
• TMCP Condition
• Hot Rolled Condition
• Controlled Rolling Condition
• Stress Relieved Condition where permitted
Surface Finish
• Hot Rolled Finish
• Mill Finish
• Shot Blasted Finish
• Smooth Finish
• Descaled Finish
• Pickled Finish
Standard Sizes
EN 10028-5 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 10028-5
|
Steel
name |
C
max. |
Si
max. |
Mn
max. |
P
max. |
S
max. |
Al_total
min. |
N
max. |
Mo
max. |
Nb
max. |
Ni
max. |
Ti
max. |
V
max. |
Other |
|
P355M |
– |
– |
– |
0.025 |
0.010 |
– |
– |
– |
– |
– |
– |
– |
– |
|
P355ML1 |
0.14 |
0.50 |
1.60 |
0.025 |
0.008 |
– |
0.015 |
– |
– |
– |
– |
– |
– |
|
P355ML2 |
– |
– |
– |
0.020 |
0.005 |
– |
– |
– |
– |
– |
– |
– |
– |
|
P420M |
– |
– |
– |
0.025 |
0.010 |
– |
– |
– |
– |
– |
– |
– |
– |
|
P420ML1 |
0.16 |
0.50 |
1.70 |
0.020 |
0.008 |
0.020ᵈ |
– |
0.20 |
0.05ᵍ |
0.50 |
0.05 |
0.10 |
ᵉ |
|
P420ML2 |
– |
– |
– |
0.020 |
0.005 |
– |
– |
– |
– |
– |
– |
– |
– |
|
P460M |
– |
– |
– |
0.025 |
0.010 |
– |
0.020 |
0.20 |
0.05ᵍ |
0.50 |
0.05 |
0.10 |
ᵉ |
|
P460ML1 |
0.16 |
0.60 |
1.70 |
0.020 |
0.008 |
0.020ᵈ |
– |
0.20 |
0.05ᵍ |
0.50 |
0.05 |
0.10 |
ᵉ |
|
P460ML2 |
– |
– |
– |
0.020 |
0.005 |
– |
– |
– |
– |
– |
– |
– |
– |
Notes:
a. Elements not listed in
this table shall not be intentionally added to the steel without the agreement
of the purchaser except for finishing the cast. All appropriate measures shall
be taken to prevent the addition from scrap and other materials used in
steelmaking of these elements which may adversely affect the mechanical
properties and usability.
b. For each reduction of
0.02% below the maximum carbon content, an increase of 0.05% Mn above the
specified maximum value is permitted, up to a maximum of 2.00% Mn.
c. The Al content of the cast
shall be determined and given in the inspection document.
d. The minimum value for Al
does not apply if adequate contents of other nitrogen-fixing elements are
present.
e. (Cr + Cu) + Mo ≤ 0.60%.
f. The total of V + Nb + Ti
shall not exceed a value of 0.15%.
g. If the carbon content is
restricted to ≤ 0.07%, a maximum niobium content of 0.10% is permitted. In this
case, special care shall be taken to avoid problems in the heat-affected zone
at operation temperatures −40 °C and below or after PWHT.
Mechanical Properties of EN 10028-5
Mechanical properties vary
according to grade and product thickness.
|
Grade |
Yield Strength MPa |
Tensile Strength MPa |
Elongation % |
|
P275M |
≥275 |
370–510 |
≥22 |
|
P275ML |
≥275 |
370–510 |
≥22 |
|
P355M |
≥355 |
470–630 |
≥20 |
|
P355ML |
≥355 |
470–630 |
≥20 |
|
P420M |
≥420 |
520–680 |
≥19 |
|
P420ML |
≥420 |
520–680 |
≥19 |
|
P460M |
≥460 |
540–720 |
≥17 |
|
P460ML |
≥460 |
540–720 |
≥17 |
Yield strength requirements
can decrease with increasing plate thickness. The applicable EN 10028-5
thickness range should therefore be considered when selecting the material.
Key Features of EN 10028-5 Steel Sheet & Plate
• High yield strength
• Excellent tensile strength
• Fine-grain microstructure
• Good weldability
• Excellent toughness
• Good resistance to brittle fracture
• Reduced carbon equivalent
• Excellent pressure resistance
• Good dimensional stability
• Suitable for heavy-duty pressure equipment
Applications of EN 10028-5 Steel Sheet & Plate
Pressure Vessel Industry
• Pressure Vessels
• Storage Tanks
• Reactor Vessels
• Process Vessels
• High-Pressure Equipment
Power Generation Industry
• Boilers
• Steam Drums
• Heat Exchangers
• Power Plant Equipment
• Pressure Components
Oil & Gas Industry
• Oil Storage Tanks
• Gas Processing Equipment
• Pressure Vessels
• Separators
• Processing Equipment
Petrochemical Industry
• Refinery Equipment
• Process Vessels
• Storage Tanks
• Heat Exchangers
• Petrochemical Processing Equipment
Heavy Engineering
• Heavy-Duty Fabrication
• Structural Pressure Components
• Industrial Equipment
• Large Storage Tanks
• Engineered Pressure Systems
Fabrication and Welding
EN 10028-5 plates provide
good fabrication and welding characteristics due to their controlled chemical
composition and thermomechanical processing.
• Excellent weldability
• Suitable for conventional welding processes
• Good bending characteristics
• Suitable for forming
• Good dimensional stability
• Reduced risk of weld-related cracking
• Reliable welded joint performance
Welding procedures should be
selected according to the grade, plate thickness, heat input, and applicable
fabrication requirements.
Heat Treatment
EN 10028-5 products are
supplied in the thermomechanically rolled condition.
• Thermomechanical rolling
refines the grain structure
• Controlled rolling improves strength
• Fine-grain structure improves toughness
• Controlled cooling provides uniform mechanical properties
• Stress relieving may be performed where permitted by the grade and
application
Additional heat treatment
should be considered carefully because excessive heating can affect the
properties achieved through thermomechanical rolling.
Advantages of EN 10028-5 Steel Sheet & Plate
• High-strength pressure
vessel steel
• Excellent weldability
• Fine-grain structure
• Good impact toughness
• Excellent strength-to-weight ratio
• Good resistance to brittle fracture
• Suitable for heavy plate applications
• Reduced fabrication requirements
• Reliable pressure-bearing performance
• Suitable for demanding industrial applications
Conclusion
EN 10028-5 Steel Sheet &
Plate covers thermomechanically rolled weldable fine-grain steels for pressure
purposes. The standard includes P275M, P275ML, P355M, P355ML, P420M, P420ML,
P460M, and P460ML grades, providing combinations of high strength, good
weldability, toughness, and reliable pressure-bearing performance.
Ladhani Metal Corporation
supplies EN 10028-5 Thermomechanically Rolled Steel Sheet & Plate in P275M,
P275ML, P355M, P355ML, P420M, P420ML, P460M, and P460ML grades, with various
thicknesses, widths, lengths, surface finishes, and customized dimensions for
pressure vessels, boilers, storage tanks, heat exchangers, oil and gas
equipment, petrochemical plants, and heavy engineering applications worldwide.
FOR REQUIREMENT OF THIS GRADE
OR FOR DETAIL CONTACT US AT :-
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