S500Q High Strength Steel Plate
S500Q High Strength Steel Plate
EN 10025-6 S500Q is a thermomechanically rolled, quenched and tempered fine-grained structural steel plate with a minimum yield strength of 500 MPa.
Standard :
EN10025-6Grade :
S500Q-
Thickness :
6.0-300.0 mm -
Width :
800-2500 mm -
Length :
3000-15000 mm
Special thickness, width, and length require negotiation.
We also provide customized processing services.If you have any questions, please contact us.
General Description of S500Q
EN 10025-6 S500Q is a thermomechanically rolled, quenched and tempered, fine-grained, high-strength structural steel plate with excellent mechanical properties, including a yield strength ≥500 MPa and a tensile strength of 590–770 MPa. It is suitable for structures requiring lightweight design and high strength, such as bridges, engineering machinery, and offshore platforms.
| Grade | S500Q |
|---|---|
| Standard | EN 10025-6: Hot-rolled structural steels - Part 6: Technical delivery conditions for flat products of high yield strength structural steels in the quenched and tempered condition |
| Classification | Hot-rolled Structural Steels |
| Delivery Conditions | Quenched and Tempered(Q&T) |
| Approval By Third Party | ABS, DNV, GL, CCS, LR , RINA, KR, TUV, CE |
| Weldability | Good weldability, but strict process procedures (preheating, suitable welding materials, etc.) must still be followed during welding. The core risks are cold cracking (hydrogen-induced cracking) and toughness degradation in the heat-affected zone (HAZ). |
| Machinability | Cutting can be performed using laser, plasma, or flame cutting, but heat input must be controlled to avoid embrittlement in the heat-affected zone. The bending radius should be ≥3 times the plate thickness, and stress relief treatment is required after cold forming. |
| Surface Quality | Default is "As-Rolled" surface. Special requirements (such as coating pretreatment) must be specified in the order. |
| Quality Control | Provide the original material certificate. If required, additional nondestructive testing (such as UT ultrasonic testing), Charpy V-notch impact test, and Z-direction property test (Grades Z15/Z25/Z35) can be added. |
Chemical Composition of S500Q
* The chemical composition of EN 10025-6 S500Q High Strength Steel Plate is adjusted within a certain range depending on the thickness.
| Grade | S500Q | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Element | C | Si | Mn | P | S | N | B | Cr | Cu | Mo | Nb | Ni | Ti | V | Zr |
| Content (max, %) | 0.200 | 0.800 | 1.700 | 0.025 | 0.015 | 0.015 | 0.005 | 1.500 | 0.500 | 0.700 | 0.060 | 2.000 | 0.050 | 0.120 | 0.150 |
Carbon Equivalent of S500Q High Strength Steel Plate
| Grade | Thickness (t) [mm] | CEV [max] |
|---|---|---|
| S500Q | t ≤ 30 | 0.47 |
| 30 < t ≤ 50 | 0.48 | |
| 50 < t ≤ 150 | 0.49 |
* The carbon equivalent value varies depending on the thickness. The greater the thickness of the steel plate, the higher the upper limit of the allowable carbon equivalent value (CEV).
* Carbon equivalent (CEV) calculation formula (IIW): CEV = C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15
* For detailed information, please contact us for inquiries.
Mechanical Properties of S500Q
* The mechanical properties of S500Q high strength steel plate vary with thickness. With an increase in thickness, there is a slight decrease in strength.
| Grade | Thickness (t) [mm] | Yield Strength (ReH) [min, MPa] | Tensile Strength (Rm) [MPa] | Elongation (A) [min, %] | Impact Energy (KV) [min] |
|---|---|---|---|---|---|
| S500Q | t ≤ 50 | 500 | 590 - 770 | 17% | 30J (at -20°C, Longitudinal) |
| 50 < t ≤ 100 | 480 | 540 - 720 | 17% | 30J (at -20°C, Longitudinal) | |
| 100 < t ≤ 150 | 440 | 540 - 720 | 17% | 30J (at -20°C, Longitudinal) |
Applications of S500Q
S500Q high-strength steel plate is primarily used in engineering structures that require a combination of high strength and lightweight characteristics.
| Application Field | Typical Components | Core Advantages |
|---|---|---|
| Engineering Machinery | Hydraulic Supports, Crane Boom Extensions, Crane Booms, Excavator Support Arms | High bending strength and fatigue resistance, reducing structural weight by 25-30% |
| Mining & Coal Machinery | Mining Truck Frames, Excavator Support Arms, Coal Mine Support Equipment | Suitable for heavy loads and harsh conditions, excellent wear resistance |
| Heavy-Duty Vehicles & Port Machinery | Heavy Truck Chassis, Engineering Vehicle Frames, Port Crane Main Girders | Combines high strength with lightweight design; one port crane achieved a 15% weight reduction and a 10% increase in lifting capacity after adoption |
| Bridge & Building Structures | Large-Span Bridge Load-Bearing Structures, High-Rise Building Core Tubes, Connection Joints | Excellent toughness matching in thickness direction, superior fatigue and seismic resistance |
| Energy Equipment | Wind Tower Flanges, Hydropower Station Pressure Pipes, Fast Reactor Support Rings for Nuclear Power | Low-temperature toughness and welding reliability, suitable for extreme environments |
| Shipbuilding & Offshore Engineering | Hull Structures, Deepwater Jacket Platforms, Offshore Wind Power Foundations | Resistance to lamellar tearing and fatigue performance |
Other Information
The Differences Between Grades Within The Same Series
| Grade | Yield Strength (ReH) [min, MPa] | Tensile Strength (Rm) [MPa] | Elongation (A) [min, %] | Impact Energy (KV) [min] |
|---|---|---|---|---|
| S500Q | 500 | 590 - 770 | 17% | 30J (at -20°C) |
| S500QL | 500 | 590 - 770 | 17% | 30J (at -40°C) |
| S500QL1 | 500 | 590 - 770 | 17% | 30J (at -60°C) |
* The differences between S500Q, S500QL, and S500QL1 mainly lie in the impact temperature requirements.
The Equivalent Grade of EN 10025-6 S500Q
| Standard | Grade | Yield Strength (MPa) | Impact Temperature (°C) | Delivery Condition | Equivalence Evaluation |
|---|---|---|---|---|---|
| EN 10025-6 | S500Q | 500 | -20 | Quenched & Tempered | Reference Grade |
| GB/T 16270 (China) | Q500D | 500 | -20 | Quenched & Tempered | Fully equivalent, preferred in Chinese market |
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