What are the typical application fields of S960QL?
S960QL, a very high strength quenched and tempered (Q+T) steel, is used in demanding applications requiring high strength, toughness, and low weight, primarily for load-bearing structures in heavy machinery (cranes, excavators), transportation (truck chassis, trailers, rail), construction (bridges, high-rise buildings, infrastructure), and offshore/marine structures (oil rigs) due to its exceptional mechanical properties, weldability, and high impact resistance,
EN S960QL steel is high strength steel, which provides a minimum yield strength of up to 960 MPa depends on thickness. EN S960QL steel is usually used for applications where mobile or fixed structures have to carry high loads – often in safety critical situations. EN S960QL steel enables engineering companies to save significant weight in what they are building.
S960QL is a European standard (EN 10025-6) designation for a very high-strength structural steel with a minimum yield strength of 960 MPa, known for excellent strength, toughness, weldability, and bendability, making it ideal for demanding load-bearing structures in cranes, heavy machinery, and infrastructure where weight reduction is crucial, processed through quenching and tempering (the 'QL' part) for superior mechanical properties.
Key Characteristics
S: Denotes structural steel.
960: Indicates a minimum yield strength of 960 N/mm² (or MPa).
Q: Means it's produced by quenching and tempering.
L: Specifies impact energy toughness at low temperatures (e.g., -40°C).
Properties & Advantages
High Strength-to-Weight Ratio: Allows for lighter structures without compromising strength.
Excellent Toughness: Good resistance to fracture, even at low temperatures.
Superior Weldability: Can be welded using conventional methods (like MAG) with good HAZ (Heat Affected Zone) strength.
Good Formability: Offers predictable bending and forming with standard equipment.
Common Applications
Cranes and Lifting Equipment
Heavy Machinery & Earthmoving Equipment
Bridges and Structural Components
Offshore & Wind Energy Components
What precautions should be taken when welding S960QL?
When welding S960QL high-strength steel, precautions focus on preventing hydrogen cracking and maintaining toughness, requiring thorough cleaning, using low-hydrogen consumables, strict heat input control (low interpass temps < 250°C), preheating (if needed), and slow, controlled cooling post-weld, alongside standard welding safety (PPE, ventilation) for hazardous fumes from primers or coatings.
What is the yield strength of S960ql?
The material studied in this research is the very-high strength steel S960QL [59]. In quasi-static conditions and at room temperature, the minimum nominal tensile yield strength is 960 N/mm2.
Is S960QL carbon steel?
Yes, S960QL is a type of high-strength low-alloy (HSLA) carbon steel, specifically a quenched and tempered (Q+T) structural steel known for its exceptional yield strength (960 MPa), making it suitable for heavy-duty engineering applications like cranes, bridges, and mining equipment, balancing high strength with good toughness and weldability.
EN S960QL steel equivalent grades:
| EU | Germany | France |
| EN | DIN,WNr | AFNOR |
| S960QL | TStE960V | E960T |
| S960T |
Chemical Composition (heat analysis)
|
C *) |
Si *) |
Mn*) |
P |
S |
Cr*) |
Cu*) |
Ni*) |
Mo*) |
B*) |
|---|---|---|---|---|---|---|---|---|---|
|
0.20 |
0.50 |
1.60 |
0.020 |
0.010 |
0.80 |
0.30 |
2.0 |
0.70 |
0.005 |
Mechanical Properties for S960QL Steel Plate
|
Designation |
Mechanical Properties (ambient temperature) |
|||||||
|
Steel Name |
Steel Number |
Min. Yield Strength Reh MPa |
Tensile Strength Rm MPa |
Min. % elongation after fracture |
||||
|
Nominal thickness (mm) |
Nominal thickness (mm) |
|||||||
|
≥3 ≤50 |
≥50 ≤100 |
≥100 ≤150 |
≥3 ≤50 |
≥50 ≤100 |
≥100 ≤150 |
|||
|
S960QL |
1.8933 |
960 |
–– |
–– |
980/1150 |
–– |
–– |
10 |
S960QL Steel Plate V Notch Impact Testing
|
Grade |
Sample Orientation |
@ 0°C |
@-20°C |
@-40°C |
@-60°C |
|
S960QL |
Longitudinal |
50 J |
40 J |
30 J |
–– |
|
Traverse |
35 J |
30 J |
27 J |
–– |
1How heavy is S960QL ?
S960QL is a high-strength structural steel, so its "weight" depends on its dimensions (thickness, width, length), but its density is around 7.84 g/cm³ (490 lbs/ft³), meaning a 1-inch thick plate weighs approximately 40.8 lbs per square foot (658 kg/m²), with specific weights varying by thickness and product form (plate, tube).
2What is S960QL standard?
The S960QL standard refers to a European high-strength structural steel (EN 10025-6) known for its exceptional minimum yield strength of 960 MPa (megapascals), achieved through quenching and tempering (the 'Q' and 'L' denote quenching/tempering and low-temperature impact toughness, respectively). This steel allows for significant weight reduction in heavy-duty applications like construction machinery, cranes, and mining equipment, offering superior load-bearing capacity, excellent toughness, good weldability, and resistance to abrasion, making it ideal for safety-critical, high-stress structures.
3What is S960QL material?
S960QL is a very high-strength structural steel conforming to the European standard EN 10025-6, known for its minimum yield strength of 960 MPa, excellent toughness, and superior abrasion resistance, achieved through a quenching and tempering (Q&T) process, making it ideal for heavy-duty applications like mobile cranes, mining equipment, and heavy transport where weight savings and high load capacity are crucial. The "S" denotes structural steel, "960" its minimum yield strength in MPa, "Q" signifies quenching, and "L" indicates specified impact energy at low temperatures (e.g., -40°C).
4What is S960QL equivalent to?
S960QL is a European standard (EN 10025-6) very high strength structural steel, equivalent to German TStE960V, French E960T/S960T, and sometimes linked to ASTM standards like Q345 (though Q345 is lower strength) or A514, with its strength coming from quenching and tempering, offering excellent weldability and toughness for heavy-duty applications like cranes and mining equipment.
5What is the hardness of S960QL?
The hardness of S960QL steel is typically around 414 HBW (Brinell Hardness), though it's a high-strength structural steel defined by its yield strength of at least 960 MPa (depending on thickness) and delivered in a quenched and tempered (Q&T) condition, making it strong but requiring careful welding due to cold cracking risks.
7What temperature is S960QL?
S960QL is a high-strength structural steel known for excellent performance at low temperatures, specifically tested for minimum impact energy at -40°C (-40°F), but it also handles moderate to high temperatures, with research studying its properties up to 900°C or more for applications like heavy machinery, though it's processed with high heat (e.g., 1350°C for austenitizing) and quenched for strength. Its "QL" designation confirms it's quenched and tempered for low-temperature toughness.
If you have project requirements for S960QL, 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:info@gneesteels.com
