DIN EN 10025-6 S690QL1 Non- Alloy Structural Steel Plate

DIN EN 10025-6 S690QL1 non-alloy structural steel plate is a premium quenched and tempered high-strength steel designed for heavy-duty structural and load-bearing applications. With a minimum yield strength of 690 MPa and superior low-temperature impact toughness, S690QL1 is widely specified in projects where safety, durability, and weight reduction are critical.

As global infrastructure, offshore, and heavy equipment projects demand higher performance materials, S690QL1 has become a preferred solution for engineers and EPC contractors.

GNEE Steel supplies S690QL1 steel plates to international markets with stable quality, competitive pricing, and professional technical support.

DIN EN 10025-6 S690QL1 is a high-strength, quenched & tempered (Q+T) structural steel plate from the EN 10025-6 standard, known for its excellent strength (minimum yield of 690 MPa) and superior low-temperature impact toughness, making it ideal for heavy machinery, cranes, and bridges where weight reduction and high load capacity are crucial. The "QL1" designation signifies enhanced toughness for extremely cold conditions, differing from S690QL or S690Q.

Key Characteristics

• Standard: DIN EN 10025-6 (European Standard for Hot-Rolled Products of High Yield Strength Structural Steels).
• Type: High-Yield Strength Steel (HYSS).
• Heat Treatment: Quenched and Tempered (Q+T).
• Strength: Minimum Yield Strength (𝑅𝑒𝐻) of 690 MPa (for thicknesses up to 50mm).
• Toughness: Excellent low-temperature impact properties (S690QL1 offers superior toughness for very cold environments).

 

Understanding the Designation

• S: Structural Steel.
• 690: Minimum Yield Strength in MPa.
• QL1: Quenched & Tempered (Q), Low-temperature impact tested (L), with specific toughness requirements for extreme cold.

Thanks to its high strength and excellent low-temperature toughness, DIN EN 10025-6 S690QL1 steel plate is widely used in:

Mobile and crawler cranes

Offshore platforms and wind power structures

Bridges and large-span steel constructions

Mining and heavy earth-moving equipment

High-load mechanical and structural components

In projects where S690QL is not sufficient for extreme low-temperature service, S690QL1 becomes the ideal upgrade.

Many buyers ask about the difference between S690QL and S690QL1.

If your project operates in cold regions or offshore environments, S690QL1 provides a higher safety margin and longer service life.

While EN 10025-6 S690QL1 is widely accepted in Europe, some projects require equivalent materials:

ASTM A514 Grade Q/T (USA – engineering confirmation required)

GB/T 16270 Q690E (China – similar strength level)

Final substitution should always be validated by design codes and project authorities. GNEE Steel offers full technical support for equivalency verification.

Founded in 2008, GNEE Steel is a trusted supplier of high-strength structural steel plates for global markets.

Our Advantages

✅ EN 10025-6 S690QL1 plates with full EN 10204 3.1 MTC

✅ Wide thickness range and customized cutting services

✅ Strict quality control and third-party inspection support

✅ Strong export experience to Europe, Middle East, Southeast Asia

✅ Professional pre-sale and after-sale technical service

We help customers shorten procurement cycles, optimize material selection, and reduce total project costs.

If you are sourcing DIN EN 10025-6 S690QL1 non-alloy structural steel plate, GNEE Steel is your reliable partner.

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What is EN 10025 6 S690QL equivalent ASTM?

En 10025 6 S690ql Equivalent Material
S690ql is a structural high-strength grade. The ASTM En 10025 6 S690ql Equivalent Astm is the Q345 grade.

What is EN 10025 6 S690QL equivalent to?

What is EN 10025-6 S690QL equivalent ASTM steel? A709 grade 100 material is usually considered the EN 10025-6 S690QL equivalent ASTM steel. Besides, S690QL equivalent ISO steel is E690.

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 equivalent of S690QL?

Approximate Equivalents of S690QL :
ASTM A514, EN 10149-2 Grade S700MC, AS/NZS 3579 Grade 700, AM 700, Bisalloy 80.

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.