GNEE Steel S890Q High-Strength Steel Plates Batch Shipped To Germany

Recently, the production base of GNEE Steel was bustling with activity as a batch of S890Q high-strength structural steel plates weighing a total of 80 tons was officially shipped to Hamburg Port in Germany after strict quality inspection. These steel plates will be used in the production of heavy equipment by a well-known German machinery manufacturing enterprise. This marks another batch order for GNEE Steel's S890Q steel plates based on their excellent quality complying with EU standards, indicating a continuous improvement in the recognition of China's high-end high-strength steel plates in the European high-end manufacturing market.

It is understood that the S890Q steel plates shipped to Germany this time were produced in strict compliance with the EN 10025-6 standard, with core parameters at the industry-leading level:

• Yield Strength (≥): 890MPa
• Tensile Strength Range: 940-1100MPa
• Elongation (≥): 12%
• Impact Energy (-40℃) (≥): 40J
• Steel Plate Thickness: 12-80mm
• Width: 2000-3200mm
• Length: Customizable according to customer requirements (the length for this order is 12000mm)

As a benchmark enterprise in the global high-end machinery manufacturing field, the German customer has almost rigorous requirements for the mechanical properties, dimensional accuracy, and surface quality of steel plates. The purchased S890Q steel plates will be used to manufacture core load-bearing components such as the booms and sticks of heavy excavators, directly affecting the load capacity and service life of the equipment.

During the processing and production of this order, the GNEE Steel technical team faced two core challenges:

1. Control of Thick Plate Weldability

As a high-strength low-alloy steel, S890Q is prone to cold cracks and reduced heat-affected zone (HAZ) properties during welding as the thickness increases. To address this issue, the technical team optimized the welding process in advance, adopting preheating (preheating temperature controlled at 120-150℃), low-hydrogen welding materials, and strictly controlling the welding heat input between 25-35kJ/cm.

Additionally, post-weld stress relief heat treatment was performed to effectively improve the toughness and strength of the welded joints. Testing results show that the yield strength of the welded joints has reached more than 90% of the base material standard.

2. Control of Steel Plate Surface Accuracy

The German customer required the steel plates to have a surface roughness Ra≤6.3μm and no scratches, scale, or other defects. To meet this requirement, the production workshop used a high-precision four-high reversing cold rolling mill and added shot blasting for rust removal and precision grinding processes after rolling. The final delivered steel plates all meet the customer's surface accuracy requirements.

"Germany's market is globally recognized for its stringent product quality requirements. This batch shipment is not only an recognition of our products by customers but also an affirmation of our technical strength," said a GNEE Steel manager. To meet the EU market's environmental protection requirements, the steel plates also adopted a chromium-free passivation treatment process, which improves rust prevention performance while complying with environmental standards. In the future, the company will continue to increase R&D investment in high-strength steel plates and further expand the European high-end manufacturing market.

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It is understood that GNEE Steel has obtained ISO 9001 quality management system certification, CE certification, and German DIN certification. The produced S890Q steel plates are widely used in machinery manufacturing, construction machinery, wind power towers, and other fields, with products sold to multiple countries and regions in Europe, America, and Asia. The order shipped to Germany this time was completed in just 28 days from contract signing to finished product delivery, and the efficient delivery capability has also won high praise from customers.

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.