EN 10137 High Strength Steel Plate
As a premier global EN 10137 High Strength Steel Plate manufacturer and supplier, GNEE STEEL specializes in providing high-performance structural materials that meet the rigorous demands of modern engineering. With over 18 years of expertise in the steel industry, our factory is equipped to deliver Quenched and Tempered Steel Plate that offers the perfect balance of weight reduction and extreme durability. Whether you are building massive cranes, offshore platforms, or mining machinery, GNEE STEEL is your trusted partner for high-yield material solutions.
What is EN 10137 High Strength Steel Plate?
The EN 10137 High Strength Steel Plate standard (specifically EN 10137-2) governs the technical delivery conditions for high yield strength structural steels in the quenched and tempered condition. These plates are engineered to provide exceptional mechanical properties that standard carbon steels cannot match. By using High Yield Strength Steel, engineers can design lighter structures without compromising on safety or structural integrity.
At GNEE STEEL, our production process involves heating the steel to a specific temperature and then rapidly cooling it (quenching), followed by reheating (tempering) to achieve the desired toughness. This makes our EN 10137 steel plates ideal for environments where high stress and low temperatures are a constant factor.
EN10137 standard high strength sheet metal grades
| 1.8904 S550Q | 1.8906 S460QL |
| 1.8908 S460Q | 1.8909 S500QL |
| 1.8914 S620Q | 1.8916 S460QL1 |
| 1.8924 S500Q | 1.8925 S890QL1 |
| 1.8926 S550QL | 1.8927 S620QL |
| 1.8928 S690QL | 1.8931 S690Q |
| 1.8933 S960QL | 1.8940 S890Q |
| 1.8941 S960Q | 1.8983 S890QL |
| 1.8984 S500QL1 | 1.8986 S550QL1 |
| 1.8987 S620QL1 | 1.8988 S690QL1 |
Popular Grades: EN 10137-2 S460QL and S690QL
Within the EN 10137 High Strength Steel Plate family, several grades stand out for their versatility and performance. GNEE STEEL maintains a massive inventory of these grades to ensure rapid turnaround for our global clientele.
- S460QL: This grade offers a minimum yield strength of 460 MPa. It is widely used in bridge construction and heavy vehicle frames where a step up from standard S355 steel is required.
- S690QL: Perhaps the most "famous" grade in this category, S690QL provides a minimum yield strength of 690 MPa. It is the go-to choice for mobile cranes, lifting equipment, and high-rise building foundations.
- S890QL & S960QL: For the most extreme engineering challenges, these ultra-high-strength grades allow for significant weight savings in specialized machinery and aerospace support equipment.
By choosing GNEE as your high strength steel plate supplier, you gain access to materials that have been tested for low-temperature impact toughness (often down to -40°C or -60°C), ensuring reliability in arctic or high-altitude conditions.
EN 10137-2 standard Mechanical property
Yield point (σs) When the stress in EN 10137-2 or a specimen exceeds the tensile elastic limit, EN 10137-2 or the specimen will continue to undergo significant plastic deformation even if the stress does not increase. This phenomenon is called yielding, and the value of the minimum stress at which yielding occurs is called the yield point.
Tensile strength (σb): EN 10137-2 The maximum stress from the beginning of stretching to the time of rupture. It indicates EN 10137-2 the ability to resist rupture.
Elongation (δs): The percentage of plastic elongation in relation to the original specimen length is called elongation.
Yield strength ratio (σs/σb): EN 10137-2 The ratio of the yield point (yield strength) to the tensile strength is called the yield strength ratio. The greater the yield-strength ratio, the greater the reliability of the structural component.
Hardness: Hardness is the ability of EN 10137-2 to resist hard objects being pressed into its surface. The higher the hardness, the better the wear resistance.
Technical Parameters of EN 10137 Steel Plates
| Grade | Yield Strength (min MPa) | Tensile Strength (MPa) | Elongation (min %) | Impact Energy (Charpy-V) |
| S460QL | 460 | 550 - 720 | 17 | 30J at -40°C |
| S500QL | 500 | 590 - 770 | 16 | 30J at -40°C |
| S550QL | 550 | 640 - 820 | 16 | 30J at -40°C |
| S620QL | 620 | 700 - 890 | 14 | 30J at -40°C |
| S690QL | 690 | 770 - 940 | 14 | 30J at -40°C |
| S890QL | 890 | 940 - 1100 | 11 | 30J at -40°C |
| S960QL | 960 | 980 - 1150 | 10 | 30J at -40°C |
EN 10137-2 standard high strength structural steel plate physical properties
| Temperature (°C) |
Modulus of elasticity (GPa) |
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) |
Specific thermal capacity (J/kg·°C) |
Specific electrical resistivity (Ω mm²/m) |
Density (kg/dm³) |
Poisson's coefficient, ν |
|---|---|---|---|---|---|---|---|
| 32 | - | - | 0.41 | - | |||
| 887 | 512 | - | 42.3 | 213 | - | ||
| 598 | - | 11 | 23.2 | 433 | 121 |
Technical Advantages of Quenched and Tempered Steel
The primary reason to specify EN 10137 High Strength Steel Plate is the superior strength-to-weight ratio. Using these plates allows manufacturers to reduce the thickness of structural components, which in turn reduces the overall weight of the machinery. This leads to lower fuel consumption in mobile equipment and lower shipping costs for modular structures.
Furthermore, our Quenched and Tempered Steel Plate exhibits excellent weldability and cold forming characteristics. Despite its high hardness, the fine-grain structure of GNEE's steel ensures that it can be fabricated into complex shapes without cracking, provided that correct welding procedures are followed.
Comprehensive Quality Control and Testing
GNEE STEEL's reputation as a top-tier EN 10137 High Strength Steel Plate manufacturer is built on a foundation of rigorous quality assurance. Every plate that leaves our facility undergoes a series of mandatory and optional tests to guarantee compliance with international standards.
Our internal laboratory performs:
- Tensile Testing: To verify yield and tensile strength.
- Charpy V-Notch Impact Test: To ensure the steel remains ductile at sub-zero temperatures.
- Ultrasonic Testing (UT): To detect any internal flaws or laminations (typically to EN 10160 S1, S2, or S3 standards).
- Chemical Analysis: To confirm the precise alloying elements that contribute to the steel's high-strength properties.
Applications of EN 10137 High Strength Steel
GNEE's High Yield Strength Steel is found in the world's most demanding environments. Because of its resilience and high load-bearing capacity, it is the preferred material for:
- Lifting and Earthmoving: Booms for telescopic cranes, buckets for excavators, and dump truck bodies.
- Energy Sector: Wind turbine towers, offshore platform legs, and oil/gas pipelines.
- Transportation: Heavy-duty trailers and railway wagons that require high payload capacity.
- Infrastructure: Bridges with long spans and high-rise steel-frame buildings.
Why GNEE STEEL is the Preferred Manufacturer
With decades of experience, GNEE STEEL has optimized the supply chain for EN 10137 High Strength Steel Plate. We don't just sell steel; we provide technical support, custom cutting services (Flame, Plasma, Laser), and global logistics management. Our warehouses maintain thousands of tons of stock, allowing us to fulfill urgent orders that other suppliers might turn away.
Our commitment to the EEAT (Experience, Expertise, Authoritativeness, and Trustworthiness) principles means you receive not only a product but a guarantee of performance. When you source from GNEE, you are sourcing from a mill-direct supplier with a proven track record in major international infrastructure projects.
FAQ
What is S690 grade steel?
S690 QL is a high yield structural steel grade produced in compliance with EN 10025:6:2004. The material is heat treated using the quench and temper process and has good bending and welding properties.
What is equivalent to S690 steel?
Common equivalents for the European S690 steel grade are Q690D (Chinese), ASTM A514 (American), S700MC (EN 10149-2), and E690 (ISO). Other equivalents include Bisalloy 80, SS 2625 / WELDOX 700 (Swedish), A709-100 (ASTM), and specific French grades like E690T.
What is the difference between S690Q and S690ql?
S690Q: Minimum impact toughness tested at -20°C (30J average).
→ Typical Use: Cranes in temperate climates, quarry equipment.
S690QL: Certified for -40°C and below (≥40J impact toughness).
→ Critical Use: Arctic pipelines, offshore platforms, mining vehicles in Siberia.
What is the effective use of high strength S690 steel in construction?
The high strength S690 steels have an excellent strength-to-self-weight ratio, and they are highly efficient to be used in heavily loaded structures. Typical applications include piles and columns in buildings and supporting members in bridges.
What is the equivalent of S960ql steel?
What are S960ql Equivalent Astm? S960ql is a high-strength structural grade. The ASTM S960ql Equivalent is the ASTM Q345 exhibiting outstanding low temperature and cold stamping properties.
Get A Quote For Your High Strength Steel Needs
In the world of heavy construction and engineering, the quality of your material dictates the success of your project. The EN 10137 High Strength Steel Plate offers the high yield strength and quenched and tempered durability required for today's toughest jobs.
Whether you need a single plate of S690QL or a large-scale supply of High Yield Strength Steel for a multi-national project, GNEE STEEL is ready to deliver.
Ready to elevate your project with the strongest steel on the market?
Contact GNEE STEEL today! Our team of experts is standing by to provide you with a comprehensive quote and technical consultation.
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We guarantee the quality and quantity of EN 10137 High Strength Steel Sheet. If you would like more information, please contact us!
Relying on many first-class equipment, such as CNC Shearing machine, Press Brake machine, Straightening machine, Roll Bending machine, Flat Bar Machine, Deburring machine etc, GNEE STEEL could provide various semi-productsand extensive forming services to customers.
GNEE STEEL PROCESSING
1.CTL & SL SERVICE (141 SETS)
Currently, GNEE STEEL has imported manyadvanced CTL/SL equipment from Italy and Korea and could provide customized CTL/SL services from cold rolled stainless steel and carbon steel to hot rolled stainless steel and carbon steel as well as strips and ultra-wide sheet.
CTL FACILITIES
Max Length:16500mm
Max Width:2200mm
Max Thickness:25.4mm
Max Yield Strength:1500Mpa
SL FACILITIES
Max Width:2200mm
Max Thickness:18mm
Max slit Quantity:31
Max Yield Strength:1200Mpa
2.CUTTING SERVICE
GNEE STEEL imported lots of advanced cutting machines from Germany, Sweden, America and Japan, including plasmas cutting machine, water jet cutting machine, laser cutting machine, flame cutting machine and saw machine. In order to meet customers' diversified needs, GNEE STEEL also adopts nest working multi-cutting methods and intensive production to improve production capacity and save costs for the customers.
Laser Cutting Machine
Max Cutting Length:40,000mm
Max Width:4,600mm
Max Thickness:100mm
Flame Cutting Machine
Max Cutting Length:40,000mm
Max Width:8,000mm
Max Thickness:500mm
Plasmas Cutting Machine
Max Cutting Length:30,000mm
Max Width:5,000mm
Max Thickness:100mm
Water-jet Cutting
Max Cutting Length:12,000mm
Max Width:4,010mm
Max Thickness:250mm
3.FORMING SERVICE
Steel Plate Roll Bending
Maximum Rolling Thickness: up to 200mm
Maximum Width: 4200mm
Automatic Bending Machine-Press Brake
Max Bending Capability:3000Ton
Max Bending Length:15,000mm
Expert in Bending High-Strength & Wear-Resistant Steels
Punching Machine
Max Width:3,070mm
Max Thickness:8mm
Max Pressure:250t
BEVELING SERVICE
GNEE STEEL beveling platform has edge milling machine, edge planer, flame / plasma groove cutting machine, flame groove cutting robot, desktop chamfering machine, gantry planerand other advanced equipment to provide customers with parts prefabrication services,daily processing of V-type, Y-type, X-type and U-type grooves, and guarantee subsequent processes such as welding and assembly of products.
Milling：
Max Cutting Length:18,000mm
Max Width:4500mm
Max Thickness:120mm
Beveling:
Max Length:16,000mm
Max Thickness:80mm
MACHINING SERVICE
GNEE STEEL owns CNC Portal-type Boring and Milling machine,CNC Floor-type Boring and Milling machine, Vertical Precision 5-axis Milling Machine, Portal-type Planer, Vertical Lathe, Cylindical Grinding machine, Hydraulic Planer and CNC Lathe and could provide fine machining of large spare parts and structural parts for customers.
Gantry Type Boring & Milling Maching Center
Max Length:48000mm
Max Width:12500mm
Max Height:8000mm
Max Diameter:10500mm
Deep-hole Drilling Equipment
Max Driling Depth:1,100mm
Max Bore Diameter:φ80mm
Max Diametar:φ4,500mm
MMulti-hole Drilling Equipment
Max Length:13,000mm
Max Width:10,000mm
Max Bore Diameter:φ105mm
Max Drilling Depth:250mm
Floor Boring And Milling Machine
Max Length:24,000mm
Max Height:8,000mm
Turntable Dimensions:9x5m
Vertical Lathe
Max Height:6,000mm
Max Diametar:φ22,00mm
Automated Edge Milling Machine
The Automated Edge Milling Machine is a leading product in heavy-duty milling equipment. It is primarily used for weld groove preparation (beveling) on large-format plates made of stainless steel, carbon steel, and special steel grades. It can process plates with a maximum thickness of up to 90mm, a length of 16 meters, and a width of 4 meters.
It is equipped with dual milling units and a fully automatic milling cutter head changing system, enabling automated 4-edge beveling. Its standout feature is the profiling technology used when milling wavy plates and irregularly shaped products, which ensures absolute consistency of the groove after milling.
Utilizing specially designed milling cutter heads, it can execute highly difficult and complex groove profiles in a single pass.
Materials: Plain carbon steel, pressure vessel steel, wear-resistant steel, high-strength steel, stainless steel, nickel-based alloys, etc.
Width: 1200 - 4200 mm
Length: 5800 - 16000 mm
Thickness: 5 - 90 mm
Weight: Up to 35 tons
This edge milling machine is the world's premier automated bevel milling equipment. With its excellent structural design and advanced data algorithms, it achieves full automation from plate detection to the actual milling process, significantly improving processing efficiency while guaranteeing high precision.
- Processing Accuracy
Length accuracy: ±1mm when L < 10m; ±2mm when L > 10m;
Width accuracy: ±1mm;
Diagonal accuracy: ±2mm;
Root face accuracy (blunt edge): ±1mm for Y-grooves; +0.5mm for X-grooves.
- Processing Efficiency
The processing efficiency is more than 10 times that of conventional edge milling or edge planing equipment.
HEAT TREATMENT
Heat Treatment Furnace
Max Furnace Size:36x12x13.5m
Max Rated Temperature:1100℃
Max Loading Capacity:800t
Heat Treatment of Pressure Vessels
Heat Treatment of Mining Equipment
Heat Treatment of Tube Sheet
Heat Treatment of Pressure Vessel Head
Case : Steel Plates Supply for 100,000m³ Full Containment Ammonia Storage Tank Project
GNEE STEEL is currently participating in the procurement phase of a 100,000m³ full containment ammonia storage tank project, supplying high-quality steel plates for critical tank components. Due to the corrosive nature of ammonia and the risk of Ammonia Stress Corrosion Cracking (SCC), the project requires strict metallurgical control of materials according to EN 10028-3 standards.
One of the most important technical requirements of this project is the strict limitation of the actual Yield Strength (Re) for all NL2 grade materials. To prevent SCC risks in ammonia storage environments, the actual yield strength must not exceed 390 MPa, regardless of the nominal values specified in the standard or plate thickness ranges. This requirement places higher demands on steelmaking process control, heat treatment stability, and material testing.
Raw high-strength steel plates ready for the 100,000 m³ full containment ammonia storage tank production
Project Materials and Technical Requirements
The project mainly uses P355NL2 and P275NL2 normalized pressure vessel steel plates, which are widely applied in low-temperature storage tanks due to their excellent toughness and weldability.
Key technical specifications include:
- Material grades: P355NL2 and P275NL2 (Normalized)
- Yield strength: Standard minimum / Maximum limited to 390 MPa
- Hardness: ≤ 225 HBW in base material
- Impact testing: Charpy-V notch test at -50°C, minimum 27J
- Certification: EN 10204 3.1 certificate, with optional 3.2 certification
These strict requirements ensure that the steel plates maintain stable mechanical properties and high resistance to ammonia-induced stress corrosion during long-term operation.
Precision rolling and forming of steel plates into curved sections for the 100,000 m³ ammonia storage tank.
Project Plate Quantities and Thickness Distribution
The total steel demand for this ammonia storage tank project is several thousand tons, mainly distributed across different tank sections:
P355NL2 – Inner & Outer Tank Shell Plates
- Lower shell courses: 50 mm thickness – approx. 2,000 tons
- Middle shell courses: 25 mm thickness – approx. 1,400 tons
- Upper shell courses: 10 mm thickness – approx. 500 tons
P275NL2 – Tank Bottom Plates
- Thickness: 10–15 mm – approx. 750 tons
P275NL2 – Suspended Roof Structure
- Thickness: 5–8 mm – approx. 180 tons
S275JR – Outer Roof (Ambient Structure)
- Thickness: 10 mm – approx. 450 tons
To improve tank fabrication efficiency and reduce circumferential welds, the project also requires wide steel plates to minimize welding joints, which helps reduce the potential risk of SCC in ammonia service conditions.
Formed steel segments wrapped and racked for protection, ready for 100,000 m³ ammonia storage tank assembly.
GNEE STEEL provides high-precision steel plate rolling and cylinder fabrication solutions for tank manufacturers worldwide. Send us your plate specifications or fabrication drawings for a fast quotation.
| TYPE | GRADE | SPECIFICATIONS |
| Carbon Steel / Low Alloy Coil | Q235A/B/C/D/Q355B(Q345B)/C/D/E/SS400/SAPH400-C/ASTMA283Grade C |
0.7~2.0*1250/1500mm*C 2.3~19.5*1250/1500/1800/2000mm*C |
| Medium Heavy Plate | Q235B/Q355B(Q345B)/C/D/E | 6.0-200x150mm-4000mmxL |
| Vessel Plate |
Q245R/Q345R/HP295/SA516MGR485/SA516GR70/P355NL2/P275NL2/ S275JR//SPV490/ASTM A537 Class 1/Class 2 |
2.5-120x1500mm-3000mmxL |
| High Strength Steel |
510L/610L/700L/750L/BS600MCK4/BS700MCK2/BS700MCK4/ BS960E/BWELDY700QL2/L4/BWELDY960QL4/HG60D/70D/785D/ Q460D/Q550D/690D/690E/TQ600MCD/TQ700MCD/S700MCD/ WYS600/700/STRENX700MCE/Q490E/Q490D |
1.2-60x 1500mm-2500mmxL |
| Patterned Steel | HQ235A|B | 1.2-60x 1500mm-2500mmxL |
| Wear-resistance Steel |
NM360/400/450/500/NM300TP/400TP/450TP/ ABREX400/450/500/B-HARD450XKY/ CREUSABRO4800/8000/EH C400LE/450LE/500LE/ |
3.0-50x1250mm-3300mmxL |
| Cold Rolled Coil | DC01/RECC/REDT/SPCC/ST12 | 0.5-3.0x1250mm-1500mmxC |
| Galvanized Plate | DC51D+AZ/DC51D+Z/DX51D+Z/SGH340+Z275/Z275/Z120/S350GD+ZM275 | 0.45-3.0x1250mm-1500mmxC |
| Pickled Coil | DD11/SPHC | 2.0-6.0x1500xC |
Stainless Steel Material and Surface Specifications
| TYPE | GRADE | THICKNESS | SURFACE |
| Austenitic | 304/304H/304L/304J1 | 0.25-150mm | 2B/BA/NO.4/8K/SB/HL/NO.1 |
| Austenitic | 321 | 0.4-80mm | 2B/BA/NO.4/8K/SB/HL/NO.1 |
| Austenitic | 316/316L/317L/316Ti | 0.3-80mm | 2B/BA/NO.4/8K/SB/HL/NO.1 |
| Austenitic | 201(J1/J2/J5) | 0.35-12mm | 2B/NO.1/1D |
| Ferrite | 430 | 0.4-3.0mm | 2B/BA/NO.4/8K/SB/HL |
| Ultra Pure Ferrite | 443 | 0.4-2.0mm | 2B |
| Ultra Pure Ferrite | 436L/439/444/441 | 0.5-3.0mm | 2B/2D |
Special Steel / Nickel Base Alloy
| TYPE | GRADE | GRADE (ASTM) | GRADE (EN) | THICKNESS |
| Heat-resistant Steel | 309S | S30908 | 1.4833 | 0.5-40mm |
| Heat-resistant Steel | 310S | S31008 | 1.4845 | 0.5-40mm |
| Duplex Stainless Steel | 2101 | S32101 | 1.4162 | 1.5-50mm |
| Duplex Stainless Steel | 2304 | S32304 | 1.4362 | 3.0-50mm |
| Duplex Stainless Steel | 2205 | S32205/S31803 | 1.4462 | 0.5-60mm |
| Duplex Stainless Steel | 2507 | S32750 | 1.4410 | 1.0-60mm |
| Super Austenitic-Steel | 904L | N08904 | 1.4539 | 0.6-50mm |
| Super Austenitic-Steel | 254SMO | S31254 | 1.4547 | 0.5-50mm |
| Super Austenitic-Steel | 1.4529 | N08926 | 1.4529 | 0.5-50mm |
| Super Austenitic-Steel | AL-6XN | N08367 | 1.4478 | 0.5-50mm |
| Nickel Base Alloy | Alloy 31 | N08031 | 1.4562 | 1.0-50mm |
| Nickel Base Alloy | 800 | N08800 | 1.4876 | 0.8-50mm |
| Nickel Base Alloy | 800H | N08810 | 1.4958 | 0.8-50mm |
| Nickel Base Alloy | 800HT | N08811 | 1.4959 | 0.8-50mm |
| Nickel Base Alloy | Alloy 28 | N08028 | 1.4563 | 1.0-20mm |
| Nickel Base Alloy | Alloy 20 | N08020 | 2.4660 | 1.0-20mm |
| Nickel Base Alloy | 825 | N08825 | 2.4858 | 0.8-40mm |
| Nickel Base Alloy | C276 | N10276 | 2.4819 | 0.5-50mm |
| Nickel Base Alloy | C22 | N06022 | 2.4602 | 1.0-50mm |
| Nickel Base Alloy | 625 | N06625 | 2.4856 | 0.8-20mm |
| Nickel Base Alloy | 400 | N04400 | 2.4360 | 1.0-20mm |
| Nickel Base Alloy | 600 | N06600 | 2.4816 | 1.0-50mm |
| Nickel Base Alloy | Pure Ni 201 | N02201 | 2.4061 | 0.5-20mm |
| Titanium | TA1 | Gr.1 | Class 1 | 0.5-50mm |
| Titanium | TA2 | Gr.2 | Class 2 | 0.5-50mm |
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