How heavy is S890QL1?
S890QL1 is a high-strength structural steel, not a specific product with a fixed weight; its weight depends on its dimensions (thickness, length, width), but its density is standard for steel (around 7850 kg/m³ or 0.284 lbs/in³), meaning a 10mm thick plate weighs roughly 78.5 kg/m², allowing you to calculate weight from size.
S890QL1 is a high-strength, quenched, and tempered structural steel grade defined by EN 10025-6.It is specifically engineered for environments where extreme yield strength (890 MPa) must be paired with exceptional fracture toughness at temperatures as low as -60°C.
Key Characteristics
Standard: EN 10025-6 (High yield strength structural steels)
Type: Quenched and Tempered (Q+T) Fine-Grained Structural Steel.
Strength: Minimum yield strength (5$R_{eH}$) of 890 MPa (for thicknesses 6$\le$ 50mm).
Toughness (L1): Guaranteed minimum impact energy ($KV$) of 30 Joules at -60°C (longitudinal).
Composition: Low carbon content with micro-alloying elements (Nb, V, Ti, Zr) to ensure a fine grain structure and enhanced weldability.
Applications in Critical Infrastructure
Beyond mobile machinery, S890QL1 plays a vital role in large-scale infrastructure and energy projects:
Hydroelectric Power: Used for penstocks where the material must withstand immense water pressure and vibration over decades.
Offshore Engineering: Its "L1" designation is essential for structures in Arctic or sub-Arctic waters, providing a safety margin against brittle fracture in temperatures dropping below -40°C.
Structural Engineering: Used in high-rise buildings and bridges for critical nodes and support members bearing massive compressive or tensile loads, allowing for more slender and daring architectural designs.
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.
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.
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.
Equivalent grades of steel S890QL1 (1.8925)
| EU EN |
Germany DIN,WNr |
| S890QL1 | EStE890V |
Chemical composition % of steel S890QL1 (1.8925): EN 10025-6-2004
| C | Si | Mn | Ni | P | S | Cr | Mo | V | N | Nb | Ti | Cu | Zr | B | CEV |
| max 0.2 | max 0.8 | max 1.7 | max 2 | max 0.02 | max 0.01 | max 1.5 | max 0.7 | max 0.12 | max 0.015 | max 0.06 | max 0.05 | max 0.5 | max 0.15 | max 0.005 | max 0.82 |
Mechanical properties of steel S890QL1 (1.8925)
| Nominal thickness (mm): | 3 - 50 | 50 - 100 |
| Rm - Tensile strength (MPa) | 940-1100 | 880-1100 |
| Nominal thickness (mm): | 3 - 50 | 50 - 100 |
| ReH - Minimum yield strength (MPa) | 890 | 830 |
| KV - Impact energy (J) longitud., | 0° 60 |
-20° 50 |
-40° 40 |
-60° 30 |
| A - Min. elongation Lo = 5,65 √ So (%) | 11 |
Notch Impact Energy
|
Grade |
Sample Orientation |
@ 0°C |
@-20°C |
@-40°C |
@-60°C |
|
S890QL1 |
Longitudinal |
60 J |
50 J |
40 J |
30 J |
|
Transverse |
40 J |
35 J |
30 J |
27 J |
1 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.
2 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.
3 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.
4 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.
5 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.
6 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.
7 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.
Get an valued quotation for S890QL1 , Contact GNEE Steel
