Structural Steel with a High Yield – S690QL

Dec 31, 2025 Leave a message

S690QL-QUALITY-CERTIFICATE.pdf

   As global infrastructure and heavy equipment projects demand higher load capacity, lighter structures, and enhanced safety, S690QL structural steel with a high yield strength has become a preferred material for modern engineering applications. Defined by EN 10025-6, S690QL combines exceptional mechanical strength, excellent low-temperature toughness, and reliable weldability, making it ideal for demanding structural environments.

 

As a professional high-strength steel supplier, GNEE Steel delivers certified S690QL plates to customers worldwide, supporting complex projects with consistent quality and technical expertise.

 

What Is S690QL Structural Steel?

 

S690QL is a quenched and tempered high-yield structural steel plate specified in EN 10025-6.

  • S – Structural steel
  • 690 – Minimum yield strength of 690 MPa
  • QL – Guaranteed impact toughness at –40°C

The steel number 1.8928 further identifies S690QL in European material systems. This combination of strength and toughness allows engineers to design safer and more efficient structures.

Advantages of Using High-Yield S690QL Steel

Choosing S690QL structural steel delivers multiple engineering and economic benefits:

  • Reduced structural weight through thinner plate design
  • Lower steel consumption and transport costs
  • Improved load-bearing efficiency
  • Longer service life with reduced maintenance
  • Enhanced safety margin in critical structures

Compared to conventional grades such as S355 or S460, S690QL offers a significant performance upgrade.

S690ql Steel Plates

Chemical Composition and Metallurgical Advantages

 

The superior performance of S690QL high yield structural steel results from its optimized chemical composition and controlled heat treatment.

Balanced carbon content for strength and weldability

Alloying elements such as Mn, Ni, Cr, and Mo

Quenched and tempered microstructure for toughness and stability

This metallurgical design enables S690QL to achieve high yield strength without excessive brittleness.

 

Typical Mechanical Property Ranges of S690ql Steel Plates

 

Designation

Mechanical Properties (ambient temperature)

Min. % elongation after fracture

Number

Reh MPa Minimum Yield Strength

Rm MPa Tensile Strength

(milimeter) Nominal thickness

(milimeter) Nominal thickness

≥100 ≤150

≥50 ≤100

≥3 ≤50

≥3 ≤50

≥100 ≤150

≥50 ≤100

14

1.8931

630

650

690

770/940

710/900

760/930

 

Key Applications of S690QL High-Yield Steel

 

The exceptional strength and durability of S690QL make it ideal for applications that demand reliable performance under extreme conditions. Here are the core industries where GNEE Steel's S690QL steel plates are widely utilized:

S690ql Steel Plates

Heavy Machinery & Equipment: Used in the manufacturing of excavators, cranes, bulldozers, and mining equipment-components that require resistance to wear, impact, and heavy loads.

Infrastructure & Bridge Construction: Suitable for bridge girders, support structures, and high-rise building frameworks, where structural integrity and long-term durability are non-negotiable.

Renewable Energy: A preferred material for wind turbine towers and offshore energy structures, as it can withstand harsh weather conditions and cyclic loading.

Transportation: Utilized in the production of heavy-duty truck frames, railway carriages, and shipbuilding components, ensuring safety and reliability in transit.

Why Choose GNEE Steel for Your S690QL Requirements?

 

As a trusted S690QL supplier with years of experience in the steel industry, GNEE Steel combines strict quality control, advanced production capabilities, and customer-centric services to deliver superior products that drive project success. Here's what sets us apart:

 

1. Uncompromising Quality: Our S690QL steel plates are manufactured using premium raw materials and adhere to EN 10025-6:2004 standards. Each batch undergoes rigorous testing (tensile, impact, bending, and chemical composition analysis) to ensure consistency and performance.

2. Customization Capabilities: We offer S690QL in a wide range of thicknesses (6mm-200mm), widths, and lengths. Custom cutting, drilling, and surface treatment services are available to meet your specific project needs.

3. Global Supply Chain: With a well-established logistics network, we can deliver S690QL steel plates to any location worldwide-ensuring on-time delivery even for urgent orders.

4. Competitive Pricing & Transparency: By optimizing our production processes and eliminating middlemen, we provide competitive pricing without sacrificing quality. Our team offers transparent quotes and detailed product documentation.

5. Expert Technical Support: Our team of steel experts is available to provide technical advice, including material selection, welding guidelines, and application recommendations-helping you make informed decisions.

 

Get Your S690QL Quote From GNEE Steel Today

 

Whether you're working on a small-scale fabrication project or a large infrastructure development, S690QL high-yield structural steel from GNEE Steel is engineered to meet your most demanding requirements. We are committed to delivering high-quality products, reliable service, and competitive pricing to help you stay ahead of the competition.

 

Contact our sales team today to request a free quote for S690QL steel plates. Provide us with your specifications (thickness, width, length, quantity, and application), and we'll tailor a solution that fits your needs.

Trust GNEE Steel as your one-stop supplier for high-performance structural steel-your project deserves the best.

 

What is equivalent to S690QL steel?

Approximate equivalents
ASTM A514, EN 10149-2 Grade S700MC, AS/NZS 3579 Grade 700, AM 700, Bisalloy 80.

 

What grade is S690QL material?

S690QL is a high strength quenched and tempered steel grade that complies to steel specification EN 10025. The designation S690QL refers to a minimum yield strength of 690 MPa.

 

What is the yield strength of S690 steel?

690 MPa

S690 Properties
Yield strength: typically 690 MPa, up to 960 MPa depending on the grade. Tensile strength: between 770 and 940 MPa, ensuring excellent load-bearing capacity.

 

What is the difference between S890QL and S690QL?

S890QL is a structural steel grade with an even greater yield strength than S690QL. The material serves as a great option for procurers who wish to promote high strength in a cost effective way.

 

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GNEE Steel also supplies a variety of high-strength steel plates, such as A514 Grade F, A572 Grade 50, A588 Grade A, S355JR, S690Q, SS400, S690QL, Q345B, Q345E, etc. If you want to know more about other types of steel plates, you can call the consultation hotline at +8615824687445 or send an email to alloy@gneesteelgroup.com. You are welcome to consult us, and we are very willing to answer your questions. 

 

 

 

Grades Of Carbon and Low-alloy High-strength Steels Supplied By GNEE
ASTM/ASME ASTM A36/A36M ASTM A36      
ASTM A283/A283M ASTM A283 Grade A ASTM A283 Grade B ASTM A283 Grade C ASTM A283 Grade D
ASTM A514/A514M ASTM A514 Grade A ASTM A514 Grade B ASTM A514 Grade C ASTM A514 Grade E
ASTM A514 Grade F ASTM A514 Grade H ASTM A514 Grade J ASTM A514 Grade K
ASTM A514 Grade M ASTM A514 Grade P ASTM A514 Grade Q ASTM A514 Grade R
ASTM A514 Grade S ASTM A514 Grade T    
ASTM A572/A572M ASTM A572 Grade 42 ASTM A572 Grade 50 ASTM A572 Grade 55 ASTM A572 Grade 60
ASTM A572 Grade 65      
ASTM A573/A573M ASTM A573 Grade 58 ASTM A573 Grade 65 ASTM A573 Grade 70  
ASTM A588/A588M ASTM A588 Grade A ASTM A588 Grade B ASTM A588 Grade C ASTM A588 Grade K
ASTM A633/A633M ASTM A633 Grade A ASTM A633 Grade C ASTM A633 Grade D ASTM A633 Grade E
ASTM A656/A656M ASTM A656 Grade 50 ASTM A656 Grade 60 ASTM A656 Grade 70 ASTM A656 Grade 80
ASTM A709/A709M ASTM A709 Grade 36 ASTM A709 Grade 50 ASTM A709 Grade 50S ASTM A709 Grade 50W
ASTM A709 Grade HPS 50W ASTM A709 Grade HPS 70W ASTM A709 Grade 100 ASTM A709 Grade 100W
ASTM A709 Grade HPS 100W      
ASME SA36/SA36M ASME SA36      
ASME SA283/SA283M ASME SA283 Grade A ASME SA283 Grade B ASME SA283 Grade C ASME SA283 Grade D
ASME SA514/SA514M ASME SA514 Grade A ASME SA514 Grade B ASME SA514 Grade C ASME SA514 Grade E
ASME SA514 Grade F ASME SA514 Grade H ASME SA514 Grade J ASME SA514 Grade K
ASME SA514 Grade M ASME SA514 Grade P ASME SA514 Grade Q ASME SA514 Grade R
ASME SA514 Grade S ASME SA514 Grade T    
ASME SA572/SA572M ASME SA572 Grade 42 ASME SA572 Grade 50 ASME SA572 Grade 55 ASME SA572 Grade 60
ASME SA572 Grade 65      
ASME SA573/SA573M ASME SA573 Grade 58 ASME SA573 Grade 65 ASME SA573 Grade 70  
ASME SA588/SA588M ASME SA588 Grade A ASME SA588 Grade B ASME SA588 Grade C ASME SA588 Grade K
ASME SA633/SA633M ASME SA633 Grade A ASME SA633 Grade C ASME SA633 Grade D ASME SA633 Grade E
ASME SA656/SA656M ASME SA656 Grade 50 ASME SA656 Grade 60 ASME SA656 Grade 70 ASME SA656 Grade 80
ASME SA709/SA709M ASME SA709 Grade 36 ASME SA709 Grade 50 ASME SA709 Grade 50S ASME SA709 Grade 50W
ASME SA709 Grade HPS 50W ASME SA709 Grade HPS 70W ASME SA709 Grade 100 ASME SA709 Grade 100W
ASME SA709 Grade HPS 100W      
EN10025 EN10025-2 EN10025-2 S235J0 EN10025-2 S275J0 EN10025-2 S355J0 EN10025-2 S355K2
EN10025-2 S235JR EN10025-2 S275JR EN10025-2 S355JR EN10025-2 S420J0
EN10025-2 S235J2 EN10025-2 S275J2 EN10025-2 S355J2  
EN10025-3 EN10025-3 S275N EN10025-3 S355N EN10025-3 S420N EN10025-3 S460N
EN10025-3 S275NL EN10025-3 S355NL EN10025-3 S420NL EN10025-3 S460NL
EN10025-4 EN10025-4 S275M EN10025-4 S355M EN10025-4 S420M EN10025-4 S460M
EN10025-4 S275ML EN10025-4 S355ML EN10025-4 S420ML EN10025-4 S460ML
EN10025-6 EN10025-6 S460Q EN10025-6 S460QL EN10025-6 S460QL1 EN10025-6 S500Q
EN10025-6 S500QL EN10025-6 S500QL1 EN10025-6 S550Q EN10025-6 S550QL
EN10025-6 S550QL1 EN10025-6 S620Q EN10025-6 S620QL EN10025-6 S620QL1
EN10025-6 S690Q EN10025-6 S690QL EN10025-6 S690Q1 EN10025-6 S890Q
EN10025-6 S890QL EN10025-6 S890QL1 EN10025-6 S960Q EN10025-6 S960QL
EN 10149 EN 10149-2 S315MC S355MC S420MC S460MC
S500MC S550MC S600MC S650MC
S700MC S900MC S960MC  
JIS JIS G3101 JIS G3101 SS330 JIS G3101 SS400 JIS G3101 SS490 JIS G3101 SS540
JIS G3106 JIS G3106 SM400A JIS G3106 SM400B JIS G3106 SM400C JIS G3106 SM490A
JIS G3106 SM490YA JIS G3106 SM490B JIS G3106 SM490YB JIS G3106 SM490C
JIS G3106 SM520B JIS G3106 SM520C JIS G3106 SM570  
DIN DIN 17100 DIN17100 St52-3 DIN17100 St37-2 DIN17100 St37-3 DIN17100 RSt37-2
DIN17100 USt37-2      
DIN 17102 DIN17102 StE315 DIN17102 EStE315 DIN17102 TStE315 DIN17102 WStE315
DIN17102 StE355 DIN17102 EStE355 DIN17102 TStE355 DIN17102 WStE355
DIN17102 StE380 DIN17102 EStE380 DIN17102 TStE380 DIN17102 WStE380
DIN17102 StE420 DIN17102 EStE420 DIN17102 TStE420 DIN17102 WStE420
DIN17102 StE460 DIN17102 EStE460 DIN17102 TStE460 DIN17102 WStE460
DIN17102 StE500 DIN17102 EStE500 DIN17102 TStE500 DIN17102 WStE500
DIN17102 EStE285      
GB GB/T700 GB/T700 Q235A GB/T700 Q235B GB/T700 Q235C GB/T700 Q235D
GB/T700 Q275      
GB/T1591 GB/T1591 Q345A GB/T1591 Q390A GB/T1591 Q420A GB/T1591 Q420E
GB/T1591 Q345B GB/T1591 Q390B GB/T1591 Q420B GB/T1591 Q460C
GB/T1591 Q345C GB/T1591 Q390C GB/T1591 Q420C GB/T1591 Q460D
GB/T1591 Q345D GB/T1591 Q390D GB/T1591 Q420D GB/T1591 Q460E
GB/T1591 Q345E GB/T1591 Q390E    
GB/T16270 GB/T16270 Q550C GB/T16270 Q550D GB/T16270 Q550E GB/T16270 Q550F
GB/T16270 Q620C GB/T16270 Q620D GB/T16270 Q620E GB/T16270 Q620F
GB/T16270 Q690C GB/T16270 Q690D GB/T16270 Q690E GB/T16270 Q690F
GB/T16270 Q800C GB/T16270 Q800D GB/T16270 Q800E GB/T16270 Q800F
GB/T16270 Q890C GB/T16270 Q890D GB/T16270 Q890E GB/T16270 Q890F
GB/T16270 Q960C GB/T16270 Q960D GB/T16270 Q960E GB/T16270 Q960F
GB/T16270 Q500