Low alloy high strength structural steel Q460E

Low Alloy High Strength Structural Steel Q460E

Introduction

Low alloy high strength structural steel Q460E is an advanced low-carbon steel product, which is optimized and strengthened through alloying elements such as manganese, silicon, nickel, chromium and vanadium. It has excellent strength, ductility and excellent hardenability, and is widely used in engineering and other industries.

Chemical composition

Low alloy high strength structural steel Q460E has excellent mechanical strength, toughness and metallurgical properties, making it a leading material for all types of fabrication operations. It has a chemical composition as follows: C≤0.18%, SI≤0.55%, Mn≤1.50%, Cr≤0.70%, V≤ 0.15%, Ni≤ 0.30%, Cu≤0.30%, Mo≤0.08%, Al≤0.015%, P≤0.035%, S≤0.035%，Nb≤5.0%.

Heat treatment

To ensure optimal performance and efficient operation of structural steel Q460E, proper heat treatment is necessary. The heat treatment process involves heating the material to a temperature above the given transformation point and cooling it at a predetermined rate. The optimal heat treatment parameters may vary based on the specific product and application. The most common types of heat treatment processes are annealing, normalizing, tempering and induction heat treatment.

Strength and hardness

Low alloy high strength structural steel Q460E has excellent mechanical strength, allowing it to withstand heavy loads and external forces during operation. The material possesses superior strength, making it an ideal choice for manufacturing robust structures and components. Its tensile strength and yield strength are at 500 MPa and 460 MPa, respectively. With respect to hardness, the material has a Rockwell hardness rating ranging from 20~32 HRC.

Welding

Structural steel Q460E is also suitable for welding operations. The amount of preheating and interpassing temperature can be reduced to a minimum due to the low concentration of carbon in the material. Moreover, the use of special welding consumables, such as moderate temperature ranges, small heat-affected zone, and low-hydrogen (LH) methods, are recommended for low alloy high strength structural steel Q460E to ensure optimal performance and reliability of welded joints.

Machinability

Due to its advanced chemical composition and its excellent weldability, low alloy high strength structural steel Q460E exhibits good machinability under proper machining conditions. The material is also resistant to corrosion and abrasion, making it suitable for use in components subject to frequent wear and tear.

Applications

Low alloy high strength structural steel Q460E is one of the most commonly used materials for developing structural components, such as bridges and buildings, in a variety of industries, including construction, manufacturing, automotive, and aerospace. It is also used for making machine tools, components for pressure vessels, and for transportation equipment, such as railway vehicles, ships, and aircraft.

Conclusion

Low alloy high strength structural steel Q460E is a versatile and reliable material with excellent mechanical and physical properties, making it suitable for a variety of applications in the engineering and other industries, including the construction, automotive, and aerospace industries. The material is easily heat treated and welded, while offering superior strength and abrasion resistance.

Q460E high-strength low-alloy structural steel is a gnenral construction steel with a minimum yield strength of 460MPa. It is produced with high quality and economic production Technology, and is widely used in bridges, large-scale structures, and other engineering constructions.

Q460E high-strength low-alloy structural steel has excellent performance such as high intensity, good ductility, high ratio of strength and a higher ratio of yield to tensile strength, better plasticity and impact resistance, excellent features such as dimensional accuracy, quality uniformity, limited tolerances and so on.

The chemical composition of Q460E high-strength low-alloy structural steel includes C≤0.18, Si≤0.60, Mn≤1.70, P≤0.030, S≤0.030, Alt.≤0.015, Nb≤0.07 and V≤0.12. It is suitable for welding, and its welding performance is also very good.

Q460E steel also has good toughness, excellent fatigue resistance, hardenability and plasticity. It has good comprehensive performance, can meet the requirements for a variety of engineering structural parts and can be used in large welded structural parts, bridges, pressure vessels and other structures with higher strength requirements.

In conclusion, Q460E high-strength low-alloy structural steel has a wide range of applications, good performance and economic advantages. It is an ideal material for large-scale engineering construction.