S690QL/S690QL1/S690QL2 High Strength Steel Plate
S690QL, S690QL1, and S690QL2 are high-strength steel plates that are used in different industries due to their remarkable properties. These steel plates offer exceptional strength, toughness, and durability, which make them ideal for different applications that require hard-wearing and durable materials.
The use of S690QL, S690QL1, and S690QL2 steel plates can significantly reduce the weight of a structure, allowing for more efficient construction without compromising on the strength or durability. This makes them a popular choice in the construction of bridges, buildings, and heavy machinery.
Additionally, these steel plates have excellent weldability and formability, which means that they can be easily shaped and welded to suit different applications. This is particularly useful in the manufacturing of heavy machinery and equipment, where precise shapes and sizes are required.
Moreover, the high strength of these steel plates also makes them suitable for use in harsh and demanding conditions. They are resistant to wear, abrasion, and impacts, thereby ensuring a longer service life and reduced maintenance costs.
1. High Strength: These steel plates have impressive strength properties, with minimum yield strength values ranging from 690 MPa to 890 MPa, making them ideal for high-stress applications.
2. Excellent Toughness: Due to their superior toughness, these plates can withstand extreme temperatures, high impact loads, and harsh environments, making them useful in rugged applications.
3. Low Weight: Compared to other high-strength materials, S690QLsteel plates have a comparatively lower weight-to-strength ratio, allowing for easier handling and transportation.
4. Flexibility: These plates can be easily cut, formed, and welded to meet specific project requirements, making it easier for manufacturers to create customized solutions.
5. Longevity: The high strength and durability of these steel plates ensure that they have a long service life and require minimal upkeep, resulting in cost savings in the long run.
6. Sustainability: S690QL1 high-strength steel plates are environmentally friendly, as they are primarily made from recycled materials, making them a sustainable choice for industries focused on the circular economy.
| Typical chemical composition of S690QL % Max | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
C |
SI |
Mn |
P |
S |
N |
B | Cr | Cu | Mo | Nb | Ni | Ti | V | Zr |
| 0.2 | 0.80 | 1.70 | 0.025 | 0.015 | 0.015 | 0.005 | 1.50 | 0.50 | 0.70 | 0.06 | 2.0 | 0.05 | 0.12 | 0.15 |
| Mechanical Properties of S690QL | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | ||||||
| S690QL | 1.8931 | 690 | 650 | 630 | 770/940 | 760/930 | 710/900 | 14 | |||
| V notch impact testing | |||||
|---|---|---|---|---|---|
|
Grade |
Sample Orientation |
at 0°C |
at -20°C |
at -40°C |
at -60°C |
| S690QL | Longitudinal | 50J | 40J | 30J | |
| S690QL | Transverse | 35J | 30J | 27J | |
S690QL - Grade Designation
Please refer to the technical details below referring to S690QL Grade Designation
S = Structural Steel
690 = Minimum yield strength (MPa)
Q = Quenching & Tempering
L = Low notch toughness testing temperature
| Typical Sizes | ||
| Internal Grade | Thickness (mm) | Width (mm) |
| SRHSQ70 | 6 - 25 mm |
2000 X 3500 2000 X 6000 |
| SRHSQ69 | 25 - 60 mm | |
Applications of S690QL Plates & Sheets :
S690QL high yield structural steel is used in a variety of sectors including:
Heavy transportation
Machine building
Steel constructions
Lifting equipment
Hydraulic Systems
Oilfield Fabrications
Offshore Cranes
Articulated Dump Trucks
Buckets
Bulldozer Blades
Quarry Screens & Crushers
Quarry Trucks
Waste Compaction Equipment
Bridges
Agricultural Equipment
Crane Booms
Defense
Mechanical Handling
Mechanical Properties EN10025 S690QL :
| PLATE THICKNESS MM | YIELD STRENGTH Reh (MPA) | TENSILE STRENGTH Rm (MPA) | Min. % elongation | IMPACT STRENGTH J, MINIMUM |
| 3 to 50 | 690 | 770 - 940 | 14 | 30 @ -40 C |
| 50 to 100 | 650 | 760 - 930 | 14 | 30 @ -40 C |
| 100 to 150 | 630 | 710 - 900 | 14 | 30 @ -40 C |
Plate Sizes Available Ex-Stock :
4 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
5 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
6 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
7 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
8 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
9 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
10 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
12 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
16 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
20 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
25 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
30 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
32 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
40 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
45 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
50 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
60 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
63 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
70 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
75 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
80 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
85 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
90 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
100 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
120 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
130 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
150 mm S690QL Plates / S690 QL Steel / 690QL Steel Plates
Production Process
1. Raw material procurement and inspection: The first step in the production of S690QL/S690QL1/S690QL2 high strength steel plate is to purchase high-quality raw materials. Manufacturers need to carry out strict quality inspection of raw materials to ensure that they meet international standards and customer requirements.
2. Hot rolling processing: Raw materials are processed by hot rolling and pressed into steel plates of appropriate thickness and width, which requires high temperature and high pressure to shape raw materials.
3. Heat treatment: Through the heat treatment process, to ensure that the steel plate in terms of physical and chemical properties to achieve the best state. This process includes quenching and tempering to ensure the best balance of hardness and toughness of the steel plate.
4. Surface treatment: The surface of the steel plate is cleaned and painted to ensure that the surface is smooth, with good appearance and anti-corrosion properties.
5. Quality inspection: Each S690QL/S690QL1/S690QL2 high strength steel plate needs to undergo strict quality inspection to ensure that it meets international standards and customer requirements. Manufacturers use modern testing equipment and technology, including ultrasonic inspection, magnetic particle inspection, hardness testing and so on.
6. Packaging and delivery: The final step is to pack the steel plate in the appropriate packaging material and deliver it according to the customer's requirements. Manufacturers usually use materials such as wooden boxes, steel belts, wood or steel plates to pack steel plates to ensure that they are not damaged during transportation.
S690QL/S690QL1/S690QL2 Difference
S690QL, S690QL1 and S690QL2 are all material grades of high strength low alloy steels. These steels have higher strength and better wear resistance than ordinary steel, so they are widely used in construction, heavy machinery manufacturing such as excavation and excavation machinery, and mining.
The main difference between S690QL, S690QL1 and S690QL2 is their chemical composition as well as the welding characteristics and heat treatment conditions of the steel.
S690QL is an austenitic structural steel material with high levels of carbon, silicon, manganese, phosphorus, sulfur and chromium. S690QL's high strength, excellent weldability and high toughness make it ideal for heavy machinery, building structures and excavation equipment.
S690QL1 is a steel material with a more optimized chemical composition, containing low carbon and boron elements, and therefore has higher resistance to joint wear. The weldability and toughness of the S690QL1 are also excellent at extremely low temperatures.
S690QL2 is a high strength low alloy steel material, its chemical composition contains high boron elements, molybdenum and cobalt. Compared to the S690QL and S690QL1, the S690QL2 has better corrosion resistance and cutting ability, and is widely used in heavy industry, mining and construction due to its better wear resistance and durability.
In summary, S690QL, S690QL1 and S690QL2 are excellent high-strength steel materials. They have different chemical compositions and welding characteristics, and each has its own unique advantages. Therefore, when choosing the right steel material, it is necessary to choose according to different application scenarios and working environments to achieve the best performance and longest service life.
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