EN10025-6 S890Q Carbon And Low-Alloy High-Strength Steel Plate

EN 10025-6 S890Q is a European standard for high-yield strength (890 MPa minimum), quenched and tempered (Q) carbon/low-alloy steel plate, offering exceptional strength for demanding applications like bridges, heavy machinery, and transport, maximizing payload efficiency. This hot-rolled structural steel is heat-treated (quenched and tempered) for superior mechanical properties, allowing for lighter yet stronger constructions.

Bridge Construction

In bridge construction, EN10025-6 S890Q alloy steel plates are widely used due to their advantages of high strength, good toughness, and corrosion resistance. They can be used to manufacture key components such as bridge piers, deck pavements, and bridge support structures, effectively enhancing the load-bearing capacity and service life of bridges.

Construction Industry

EN10025-6 S890Q low-alloy high-strength structural steel plates also hold an important position in the construction industry. They can be used to produce components like structural frames and load-bearing wall panels of high-rise buildings, ensuring the stability and safety of the buildings. In addition, this type of steel has good seismic performance, which can reduce losses in the event of natural disasters such as earthquakes.

Shipbuilding

Shipbuilding is another important application field of EN10025-6 S890Qhot-rolled plates. Since ships need to withstand complex marine environments and huge loads, the requirements for the strength and toughness of materials are extremely high. With its excellent mechanical properties, low-alloy high-strength structural steel plates have become the preferred material in shipbuilding, widely used in hull structures, decks and other parts.

Automobile Industry

In the automobile industry, EN10025-6 S890Q low-alloy high-strength structural steel plates are mainly used to manufacture key components such as automobile body frames and chassis. With the development of the automobile industry, there are increasing requirements for automobile lightweight, energy conservation and environmental protection, and the application of low-alloy high-strength structural steel plates has become more and more extensive. It can effectively reduce the weight of automobiles, improve fuel economy, while ensuring the strength and safety of automobiles.

Petroleum Industry

In the petroleum industry, EN10025-6 S890Q hot-rolled plates are mainly used to manufacture equipment such as oil drilling platforms, oil tanks, and oil pipelines. Due to the extremely high requirements of the petroleum industry for the safety, corrosion resistance and service life of equipment, low-alloy high-strength structural steel plates have an irreplaceable position in the petroleum industry.

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UT(Ultrasonic examination), AR(As Hot Rolled only), TMCP(Thermal Mechanical Control Processing), N(Normalized), Q+T(Quenched and Tempered),Z Direction Test(Z15,Z25,Z35), Charpy V-Notch Impact Test, The Third Party Test (such as SGS Test), Coated or Shot Blasting and Painting.

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Q1: What is S890Q steel plate?

A:S890Q is a high-strength structural steel plate according to EN 10025-6, supplied in quenched and tempered (Q) condition, with a minimum yield strength of 890 MPa.

Q2: What is the material number of S890Q?

A:The European material number for S890Q is 1.8940.

Q3: Is S890Q considered non-alloy steel?

A:Yes. Under EN classification, S890Q is listed as non-alloy structural steel, although small alloying elements are added for strength and toughness control.

Q4: What thickness range is available for S890Q steel plate?

A:Common supply thickness ranges from 6 mm to 150 mm, depending on mill capability and standard requirements.

Q5: What are the mechanical properties of S890Q?

A:Yield strength: ≥ 890 MPa (≤ 50 mm)

Tensile strength: 940–1100 MPa

Elongation: ≥ 11%

Impact test: ≥ 30 J at −20°C

Q6: Can S890Q steel be welded easily?

A:Yes, S890Q has good weldability, but welding must follow controlled procedures, including proper heat input, preheating (if required), and suitable filler materials.

Q7: What is the difference between S890Q and S890QL?

A:S890QL offers better low-temperature impact toughness than S890Q and is typically specified for colder environments or critical structures.

Q8: What are typical applications of S890Q steel plate?

A:S890Q is widely used in:

Cranes and lifting equipment

Bridges and heavy structures

Mining and earthmoving machinery

Wind power and offshore structures

Heavy-duty vehicle frames

Q9: Can S890Q replace S690Q to reduce weight?

A:Yes. Using S890Q instead of S690Q allows significant weight reduction while maintaining or increasing load capacity, which is especially valuable for mobile equipment.

Q10: What inspection and certificates are required for S890Q?

A:Standard supply includes EN 10204 3.1 MTC.

3.2 certificates, ultrasonic testing (UT), and third-party inspection (SGS, BV, TUV) are available upon request.

Q11: Is S890Q suitable for pressure vessel applications?

A:No. S890Q is a structural steel, not designed for pressure vessel or boiler applications. Pressure vessel steels must comply with specific PV standards such as EN 10028 or ASME.

Q12: What delivery condition is required for S890Q steel plate?

A:S890Q must be supplied in quenched and tempered (Q) condition as per EN 10025-6.

Q13: Can you cut or machine S890Q steel plate?

A:Yes. Flame cutting, plasma cutting, and machining are possible with controlled parameters to maintain material properties.

Q14: Does S890Q steel require special storage or handling?

A:Standard dry storage is sufficient. Surface protection can be added for long-term outdoor storage.