What welding rod for S890QL1 ?

What welding rod for S890QL1 ?

For welding S890QL1, use high-strength, low-hydrogen electrodes or wires like AWS A5.28 ER120S-1 (TIG) or AWS A5.5 E12018-G/E 89 4 Z B 62 H5 (SMAW), which match the strength and toughness, requiring strict preheating (150-250°C) and controlled low heat input to prevent cracking and maintain mechanical properties,

S890QL1 is a tempered and weldable fine grained steel. yield point: >890 N/mm² application: welded steel constructions of various types, e.g. bridges and load-carrying constructions as well as transport vehicles, lifting and earthmoving machines. application limits: at -60°C is warranted a notch impact energy of 30 J (longitudinal test specimen) cold formability: for nominal size < 16 mm bending radius in transversal direction 3xs in longitudinal direction 4xs (s= nominal thickness) hot forming property: allowed only for stress relieve annealing temperature (max. 580°C) suitability for welding: Steel is weldable according to the common welding methods (EURONORM-INFORMATION Nr. 2 has to be considered)

S890QL1 is a high-yield, quenched and tempered structural steel grade meticulously engineered to meet the rigorous requirements of the European standard EN 10025-6. The designation "S890" signifies its exceptional minimum yield strength of 890 MPa, while the "Q" indicates the specialized heat treatment process-quenching followed by tempering-which optimizes its crystalline structure for maximum durability.

The "L1" suffix represents its superior low-temperature toughness, guaranteeing specified impact energy absorption levels even at temperatures as low as -60°C. This unique combination of properties ensures that the material can withstand extreme mechanical stress and harsh environmental conditions, making it a reliable choice for critical load-bearing components where safety and structural integrity are paramount.

S890QL1 is a European high-strength, fine-grained structural steel (EN 10025-6) known for excellent toughness, achieving its properties through quenching and tempering (Q+T) and meeting a minimum yield strength of 890 MPa, with 'L1' indicating superior low-temperature impact toughness down to -60°C. It's used in demanding applications like heavy machinery, bridges, and transport, offering a high strength-to-weight ratio.

Understanding the Name:

S: Structural Steel.

890: Minimum yield strength in Megapascals (MPa).

Q: Quenched and Tempered delivery condition.

L1: Specifies impact testing at low temperatures, specifically not lower than -60°C for S890QL1.

Key Characteristics:

High Strength: Minimum yield strength of 890 MPa, with tensile strength often exceeding 940 MPa.

Excellent Toughness: Designed for significant impact energy absorption at low temperatures.

Fine Grained: Achieved through controlled microalloying and heat treatment, enhancing strength and toughness.

Weldable: Can be welded using standard techniques, though specific EURONORM guidelines should be followed.

Applications:

Heavy Lifting Equipment.

Trailers and Transport Vehicles.

Mining and Earth-Moving Machinery.

Bridges and Structural Components requiring high strength and durability.

What is S890QL1 material?

S890QL1 is a European standard (EN 10025-6) high-strength, fine-grained structural steel plate, known for its excellent combination of high strength (minimum 890 MPa yield strength) and toughness, delivered in a quenched and tempered (Q&T) condition for demanding applications like heavy machinery, bridges, and offshore structures, with the 'L1' indicating superior low-temperature impact toughness down to -60°C.

What is S890QL1 equivalent to?

S890QL1 is a European (EN 10025-6) high-strength structural steel, known for excellent impact toughness at low temperatures (down to -60°C). Its key equivalents include Strenx® 900 F, DILLIMAX 890 E, and German grades like EStE 890 V, offering similar mechanical properties for demanding applications like heavy machinery, cranes, and bridges.

What precautions should be taken when welding S890QL1 ?

When welding S890QL steel, focus on low heat input, appropriate filler materials, controlled preheat/interpass temperatures (60-120°C range common in studies), and post-weld cooling to prevent hydrogen-induced cold cracking (HICC) and maintain joint strength, alongside standard PPE like helmets, gloves, and ventilation, as it's a high-strength steel prone to cracking if parameters aren't precise.

Equivalent grades of steel S890QL1 (1.8925)

Chemical composition % of steel S890QL1 (1.8925): EN 10025-6-2004

Mechanical properties of steel S890QL1 (1.8925)

Notch Impact Energy

1 What temperature is S890QL1 ?

S890QL1 is a high-strength structural steel defined by its properties, not a single temperature; it's quenched and tempered for use down to -60°C, offering high strength (minimum yield 890 MPa) and toughness, with processing often involving temperatures like 530-580°C for stress relieving or preheating around 100-200°C, though it's hot-formed and retempered during manufacturing.

2 Is S890QL1 carbon steel?

Yes, S890QL1 is classified as a high-strength, low-alloy (HSLA) structural steel, often described as a type of carbon steel, specifically a quenched and tempered (Q+T) grade under the EN 10025-6 standard, notes {Link: Bebon Steel. While it's fundamentally a carbon steel, it has controlled alloying elements (like Nb, Ti, V, Zr, Al) for enhanced strength and toughness, giving it superior properties for heavy-duty applications like bridges and engineering structures, with "L1" indicating specific low-temperature impact toughness requirements.

3 What are the typical application fields of S890QL1 ?

S890QL1, a high-strength, quenched, and tempered steel, is used in demanding structural applications requiring excellent strength, toughness, and weldability, particularly for heavy machinery, lifting equipment (cranes, booms), mining equipment, large vehicles (dump trucks, chassis), and highly stressed components in construction and offshore industries, performing well in cold conditions down to -60°C.

4 What is the P number of S890QL1 ?

For S890QL1 steel, the phosphorus (P) content is typically limited to a maximum of 0.020% (200 ppm), though some sources list a slightly higher max of 0.025%, but the key is its high strength and low P for weldability, often classified under P-Number 1 in welding codes for its similarity to other carbon/low-alloy steels.

5 What is the S890QL1 standard?

The S890QL1 standard defines a high-strength, weldable structural steel (EN 10025-6) with a minimum yield strength of 890 MPa, delivered in a quenched and tempered (Q) condition, offering superior toughness (L1) down to -60°C, making it ideal for heavy-duty applications like lifting equipment, vehicles, and construction where strength and performance in cold conditions are crucial, with 'S' for Structural, '890' for yield strength, 'Q' for Quenched & Tempered, and 'L1' for the low-temperature impact toughness.

6 What is the hardness of S890QL1 ?

The hardness of S890QL1 (a high-strength, quenched & tempered steel) typically falls in the range of 355 to 550 HBW (Brinell Hardness), though it's a property that can vary slightly with thickness and specific heat treatment, with the material offering high yield strength (890 MPa) and excellent toughness for demanding structural applications.

7 Is S890QL1 steel hard to drill?

Yes, drilling S890QL1 steel (a high-strength steel) is challenging and harder than standard steel because of its hardness and work-hardening properties, requiring slower speeds, specific lubricants, and specialized, sharp bits (like carbide or cobalt with TiN/TiAlN coatings) with a 135° point angle to prevent overheating, dulling, and glazing, which can make the metal nearly impossible to drill.

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If you want to learn more about S890QL1 GNEE's products, you can send an email to info@gneesteels.com . We are more than happy to assist you.