S890QL1 is a European-standard (EN 10025-6) quenched and tempered, high-yield strength structural steel, known for exceptional strength, toughness, and durability, indicated by its minimum yield strength of 890 MPa and guaranteed impact energy at low temperatures (e.g., 30J at -60°C), making it ideal for demanding load-bearing applications like heavy transport and construction.
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S890QL1 Chemical Composition |
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Grade |
The Element Max (%) |
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C |
Si |
Mn |
P |
S |
N |
B |
Cr |
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S890 QL1 |
0.20 |
0.80 |
1.70 |
0.020-0.025 |
0.010-0.015 |
0.015 |
0.005 |
1.50 |
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Cu |
Mo |
Nb |
Ni |
Ti |
V |
Zr |
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|
0.50 |
0.70 |
0.06 |
2.0 |
0.05 |
0.12 |
0.15 |
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Grade |
S890QL1 Mechanical Property |
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Thickness |
Yield |
Tensile |
Elongation |
Min Impact Energy
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S890 QL1 |
mm |
Min Mpa |
Mpa |
Min % |
-60 |
30J |
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3<t≦50 |
890 |
940-1100 |
11 |
-60 |
30J |
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50<t≦100 |
830 |
880-1100 |
11 |
-60 |
30J |
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100<t≦150 |
800 |
820-1000 |
11 |
-60 |
30J |
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applications
Construction
S890QL1 is widely used in construction for bridges, high‑strength supporting structures, and various general engineering applications. Its high strength allows designers to reduce member sizes while maintaining stiffness and load‑carrying capacity, leading to more efficient and economical structures. The steel's good toughness also ensures reliable performance under dynamic and cyclic loading conditions commonly found in large‑scale construction projects.
Transportation
In the transportation sector, S890QL1 is employed in the chassis and bodies of heavy road vehicles, including dumpers. These components are subjected to heavy payloads, constant vibration, and impact loading during operation. The steel's combination of high strength and toughness helps improve durability, reduce vehicle weight, and enhance overall structural performance, contributing to better fuel efficiency and longer service life.
Lifting & Earthmoving
S890QL1 is a preferred material for critical components in cranes, hoists, and heavy earthmoving machinery. Applications include boom sections, outrigger beams, and structural frames where high strength and fatigue resistance are essential. By using this steel, manufacturers can achieve lighter, stronger designs that offer improved lifting capacities and better operational efficiency in demanding work environments.
Mining
In the mining industry, S890QL1 is used for equipment and structures that must withstand harsh conditions such as heavy impact, abrasion, and dynamic loading. Typical applications include mine support structures, loader bodies, and other heavy‑duty components. The steel's toughness and high strength help ensure reliable performance and reduce maintenance requirements in these aggressive operating environments.
Offshore
S890QL1 is also utilized in offshore applications that demand high strength and extreme toughness, particularly in cold and corrosive conditions. It is suitable for structural components where resistance to brittle fracture is critical. The steel's excellent low‑temperature toughness makes it a reliable choice for offshore platforms and equipment operating in challenging marine environments.
If you have project requirements for S890QL1, we welcome your inquiry. GNEE maintains a large inventory of commonly used high strength steel grades for your selection.For detailed mechanical properties, chemical composition, and technical data, as well as free samples, please contact our factory immediately. We offer competitive prices, stable quality, and professional service. Email:beam@gneesteelgroup.com.
What are the main applications of S890QL1?
It is commonly used in heavy-duty crane structures, construction and mining machinery, offshore structures, bridge components, heavy truck frames, and specialized equipment operating in low-temperature environments.
What does the designation "S890QL1" mean?
"S" indicates structural steel, "890" refers to the minimum yield strength level, "Q" denotes quenched and tempered delivery, and "L1" signifies improved low-temperature toughness requirements.
What are the key mechanical properties of S890QL1?
S890QL1 offers high yield and tensile strength, good ductility, and excellent toughness, especially at low temperatures, making it suitable for demanding load-bearing applications.
What is the typical chemical composition characteristic of S890QL1?
It is a low-alloy steel with controlled carbon content and additions of elements such as chromium, nickel, molybdenum, and sometimes vanadium or boron to enhance strength and toughness.
How does S890QL1 compare to quenched and tempered alloy steels used in pressure vessels?
While both types of steel offer high strength and toughness, S890QL1 is primarily designed for structural applications, whereas pressure vessel steels are optimized for resistance to pressure, corrosion, and specific environmental conditions. The two differ in their chemical compositions, mechanical property requirements, and applicable standards.
In what delivery condition is S890QL1 supplied?
S890QL1 is supplied in the quenched and tempered condition, which involves heating to a high temperature, rapid cooling, and subsequent tempering to achieve the desired strength and toughness balance.
How does S890QL1 compare to S690QL1?
Both are high-strength quenched and tempered structural steels with improved low-temperature toughness, but S890QL1 offers higher strength levels, making it more suitable for extremely demanding load-bearing applications where weight reduction and high performance are critical.
What are the differences between S890QL1 and ASTM A514/A517 grades?
S890QL1 is a European grade with specified low-temperature toughness requirements, while ASTM A514/A517 are American standards for quenched and tempered high-strength steels. The main differences lie in their strength levels, toughness criteria, and chemical composition limits, with S890QL1 typically providing better low-temperature performance.
How does S890QL1 perform compared to carbon structural steels?
Compared to conventional carbon structural steels, S890QL1 has significantly higher strength and toughness, allowing for lighter and more efficient designs. However, it requires more careful welding and fabrication procedures due to its higher strength and alloy content.
What is the difference in toughness between S890QL1 and S890QL?
Both grades offer good toughness, but S890QL1 provides superior low-temperature toughness compared to S890QL, making it more suitable for applications in extremely cold environments where brittle fracture must be avoided.