S690 High-Strength Quenched And Tempered Steel Plate
Yield Strength: Minimum 690 MPa (up to 50mm thickness)
Tensile Strength: 770-940 MPa (up to 50mm thickness)
Elongation: Minimum 14%
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Gnee Steel (Tianjin) Co., Ltd. is one of the most professional s690 high-strength quenched and tempered steel plate manufacturers and suppliers in China. Welcome to wholesale customized s690 high-strength quenched and tempered steel plate at competitive price from our factory. Good service and quality products are available.
S690 steel plate complies with the European standard EN 10025-6. In its grade, "S" stands for European standard structural steel, "690" indicates a minimum yield strength of 690MPa after quenching and tempering, and "QL" represents the delivery condition as quenched and tempered. The main chemical composition of the steel plate is carefully formulated to meet its high strength and toughness requirements, including various elements such as carbon, silicon, manganese, phosphorus, sulfur, chromium, nickel, and molybdenum.
Chemical Composition
| Element (Symbol and Name) | Percentage Range (%) |
|---|---|
| C (Carbon) | 0.10 - 0.20 |
| Mn (Manganese) | 1.20 - 1.60 |
| Si (Silicon) | 0.10 - 0.50 |
| Cr (Chromium) | 0.30 max |
| Ni (Nickel) | 0.30 max |
| Mo (Molybdenum) | 0.10 - 0.15 |
Mechanical Properties
| Property | Condition/Temper | Test Temperature | Typical Value/Range (Metric) | Typical Value/Range (Imperial) | Reference Standard for Test Method |
|---|---|---|---|---|---|
| Yield Strength (0.2% offset) | Quenched & Tempered | Room Temp | 690 - 960 MPa | 100 - 139 ksi | ASTM E8 |
| Tensile Strength | Quenched & Tempered | Room Temp | 770 - 1100 MPa | 112 - 160 ksi | ASTM E8 |
| Elongation | Quenched & Tempered | Room Temp | 12 - 20% | 12 - 20% | ASTM E8 |
| Hardness (Brinell) | Quenched & Tempered | Room Temp | 200 - 300 HB | 200 - 300 HB | ASTM E10 |
| Impact Strength (Charpy) | Quenched & Tempered | -20°C | 27 J | 20 ft-lbf | ASTM E23 |
Performance Characteristics of S690 Steel Plate
High strength: The yield strength of S690 fine grain structural steel plate is as high as 690MPa or more, and the tensile strength ranges from 710-940MPa. It can withstand extremely high loads and is suitable for manufacturing components and structures that need to bear high stress and heavy loads.
High toughness: The steel plate has good plasticity and toughness, and can maintain stable performance even under complex stress conditions. Its elongation is usually not less than 14%, and the longitudinal V-notch impact energy at -40℃ reaches more than 30J.
Good weldability: S690 high yield structural steel plate can be welded by conventional welding methods, and the weld quality is stable and reliable. This provides great convenience for its application in manufacturing large structural parts.
Excellent fatigue resistance: Under alternating loads, S690 fine grain structural steel plate can maintain a high fatigue life, which is particularly important for components that need to bear dynamic stress for a long time.
Application Fields of S690 Steel Plate
Construction machinery: S690 high-strength structural steel plate is widely used in the manufacture of various construction machinery, such as drilling rigs, electric shovels, electric wheel dump trucks, mining trucks, excavators, loaders, bulldozers used in mining and various engineering constructions. Its high strength and toughness can ensure the stable operation of these equipment in harsh working environments.
Bridge construction: In large bridge structures, such as highway bridges and railway bridges, S690 alloy structural steel plate also plays an important role. Its excellent mechanical properties and fatigue resistance can improve the bearing capacity and durability of bridges.
Building structures: S690 alloy quality steel plate is also used in structural and supporting components of high-rise buildings, factories and other buildings. Its high strength can reduce the cross-sectional size of components, thereby saving materials and space.
Other fields: In addition, S690 alloy special steel plate is widely used in shipbuilding, petrochemical, power industry, wind energy industry and other fields. Its excellent performance enables it to meet the needs of these fields for materials with high strength, high reliability and long service life.
Manufacturing Process of S690 Steel Plate
The manufacturing process of S690 steel plate includes multiple links such as smelting, continuous casting, rolling, and heat treatment. Among them, heat treatment is a key step to ensure the performance of the steel plate. Through quenching and tempering treatment, the microstructure of the steel plate can reach a uniform tempered martensite/bainite state, thereby achieving the optimal balance between high strength and toughness.
Summary
As a high-strength quenched and tempered steel, S690 hot rolled pickled steel plate plays an increasingly important role in industrial manufacturing due to its excellent performance and wide application fields. With the continuous progress of science and technology and the continuous improvement of production processes, the performance and quality of S690 steel plate will be further improved, providing reliable material support for more engineering projects.
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FAQ
Q: What is S690 steel?
A: S690 high yield & fine grain steel plate is a high strength, quenched and tempered fine-grain structural steel. Structural steel S690 is used in structures that must withstand very heavy loads. This grade is meant for structures where weight savings is important.
Q: What is the equivalent of S690 steel?
A: Equivalent grades to S690QL steel include ASTM A709-100 (USA), E690T and S690T (France), TStE690V and DILLIMAX 690 (Germany), WELDOX 700 (Sweden), and E690 (ISO). These equivalents are specific to different regional standards and manufacturers, but they all share similar high-strength, quenched and tempered properties.
Q: What material group is S690?
A: S690 QL is a high yield structural steel grade produced in compliance with EN 10025:6:2004. The material is heat treated using the quench and temper process and has good bending and welding properties.
Q: What material is S690QL?
A: S690QL is a high strength quenched and tempered steel grade that complies to steel specification EN 10025. The designation S690QL refers to a minimum yield strength of 690 MPa.
Q: What is the effective use of high strength S690 steel in construction?
A: The high strength S690 steels have an excellent strength-to-self-weight ratio, and they are highly efficient to be used in heavily loaded structures. Typical applications include piles and columns in buildings and supporting members in bridges.
Q: What is the yield strength of S690 steel?
A: 690 MPa.
Yield strength of 690 MPa. Used in structures bearing extremely heavy loads, such as bridges, offshore drilling rigs and buildings, as well as in heavy construction equipment and
Q: How thick are S690 plates?
A: Plates of S690 steel grade are available with thicknesses of 8-100 mm for Q and QL quality groups and with thicknesses of 8-50 mm for QL1 quality group. Available width of plates is up to 3200 mm, length – up to 12200 mm. With the plate thickness of 100 mm and plate width of 1600 mm, the maximum length is 7500 mm*.
Q: What is the tensile strength of S690?
A: S690 Properties
Tensile strength: between 770 and 940 MPa, ensuring excellent load-bearing capacity.
Q: What is S690QL used for?
A: The designation S690QL refers to a minimum yield strength of 690 MPa. The combination of good availability and pricing and high strength combined with ease of fabrication has made S690QL steel plate a popular grade for both mobile applications such as cranes and lifting equipment and fixed steel structures.
| Grades Of Carbon and Low-alloy High-strength Steels Supplied By GNEE | |||||
| EN10025 | EN10025-2 | EN10025-2 S235J0 | EN10025-2 S275J0 | EN10025-2 S355J0 | EN10025-2 S355K2 |
| EN10025-2 S235JR | EN10025-2 S275JR | EN10025-2 S355JR | EN10025-2 S420J0 | ||
| EN10025-2 S235J2 | EN10025-2 S275J2 | EN10025-2 S355J2 | |||
| EN10025-3 | EN10025-3 S275N | EN10025-3 S355N | EN10025-3 S420N | EN10025-3 S460N | |
| EN10025-3 S275NL | EN10025-3 S355NL | EN10025-3 S420NL | EN10025-3 S460NL | ||
| EN10025-4 | EN10025-4 S275M | EN10025-4 S355M | EN10025-4 S420M | EN10025-4 S460M | |
| EN10025-4 S275ML | EN10025-4 S355ML | EN10025-4 S420ML | EN10025-4 S460ML | ||
| EN10025-6 | EN10025-6 S460Q | EN10025-6 S460QL | EN10025-6 S460QL1 | EN10025-6 S500Q | |
| EN10025-6 S500QL | EN10025-6 S500QL1 | EN10025-6 S550Q | EN10025-6 S550QL | ||
| EN10025-6 S550QL1 | EN10025-6 S620Q | EN10025-6 S620QL | EN10025-6 S620QL1 | ||
| EN10025-6 S690Q | EN10025-6 S690QL | EN10025-6 S690Q1 | EN10025-6 S890Q | ||
| EN10025-6 S890QL | EN10025-6 S890QL1 | EN10025-6 S960Q | EN10025-6 S960QL | ||
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