Low alloy high strength structural steel

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Low Alloy High Strength Structural Steel

Low alloy high strength structural steel is a kind of steel with a high strength, high toughness and good weldability. It has excellent properties, such as good corrosion resistance, excellent wear resistance, good plasticity and low temperature toughness, so that it can be used in various engineering structures.

Low alloy high strength structural steel is mainly composed of elements such as carbon, silicon, manganese, phosphorus, sulfur, nickel, chromium, titanium, molybdenum and so on. Generally, the component of each component is not more than 2.5%. The reason why this kind of steel has high strength is that during the production process, alloy elements are added to effectively improve the grain refinement and get a dense pearlite particle structure, thus improving the yield strength without affecting the toughness.

Generally, the low alloy high strength structural steel plate is from 2.0 mm to 50 mm, the width of 1500mm to 2400mm, the length of 6000mm to 18000mm, such as S355N, S355J2, S355J2+N high strength steel plate, S700MC HSLA steel plate, P460 N pressure vessel steel plate, Q345R boiler steel plate and so on. Low alloy high strength structural steel has many advantages such as high strength, good plasticity, excellent machinability, good cutting performance and low notch sensitivity. Due to these characteristics, this kind of steel is widely used in a variety of industries, such as bridge construction, pressure vessel manufacturing, industrial boilers, transportation machinery, construction machinery, ships and other fields.

In addition, the low alloy high strength structural steel is also suitable for hydrogen embrittlement and poor cutting performance during machining. This kind of steel can be further pretreated to reduce or eliminate its hydrogen embrittlement. It can be chemically treated with hydrogen-reactive agents such as boron or sodium bicarbonate, or it can be thermally treated by soaking or cold rolling with tensile strength above 1300 MPa, so as to reduce the embrittlement caused by hydrogen

Low Alloy High Strength Structural Steel

Low alloy high strength structural steel is a series of alloy structural steels, which are mainly used in construction, automobiles and ships. Low alloy high strength structural steel has the advantages of high strength and good plasticity and weldability. This series of structural steel material has good corrosion resistance and weather resistance properties, and also has good wear resistance and fatigue resistance properties.

Low alloy high strength structural steel has a wide range of applications in various fields. In civil engineering, this series of steel materials is mainly used for the construction of bridges, high-rise buildings, towers, and industrial and civil buildings. In the automotive industry, it is mainly used to manufacture shock absorbers, suspensions, various framing members, and other components. In the shipbuilding industry, it is mainly used to manufacture various decks, hulls, and cranes.

Low alloy high strength structural steel has excellent properties as a high-strength material and also has superior mechanical properties. It also has a good combination of strength and toughness. This series of steel has high strength and creep resistance, good plasticity and toughness, and relatively high fatigue strength. Weldability and plasticity are good, and the ease of forming and welding process performance is also good.

In conclusion, low alloy high strength structural steel is an excellent material that is widely used in engineering and shipbuilding projects. Not only does it have good mechanical properties, such as high strength and good plasticity and weldability, but also has excellent corrosion resistance and weather resistance, wear resistance and fatigue resistance.