40Mn Alloy Structural Steel

40Mn alloy structural steel is a type of steel that is widely used in the construction industry due to its excellent properties. This steel is highly durable, strong, and resistant to wear and tear, making it an ideal choice for structural construction projects. It is also easily machinable, allowing for intricate designs and shapes to be created.

One significant advantage of 40Mn alloy structural steel is its high tensile strength, which makes it capable of withstanding high loads and stress without breaking or deforming. This makes it an ideal choice for building bridges, towers, and other structures that require high strength and stability.

Another advantage is its excellent resistance to corrosion. This means that structures made of 40Mn alloy structural steel can withstand harsh environmental conditions, such as exposure to saltwater or acidic substances without deteriorating or rusting.

Moreover, 40Mn alloy structural steel is easy to weld and bend, allowing for quick and straightforward installation processes. This results in faster construction times and lower labor costs, which makes this steel more affordable than other types of materials.

1. Chemical composition: C≤0.42%, Si≤0.40%, Mn: 0.50-0.80%, P≤0.035%, S≤0.035%.

2. Mechanical properties: yield strength ≥275MPa, tensile strength ≥550MPa, elongation ≥16%, impact value ≥40J.

3. Heat treatment: normalizing or normalizing and tempering can be used.

4. Surface treatment: The surface should be clean, smooth, no cracks, scratches and oxidation.

5. Plate thickness and plate width: the common plate thickness is 6-120mm, and the common plate width is 1500mm and 2000mm.

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