What are the features of low-alloy medium plate?

Low-alloy medium plate is a kind of low-alloy steel, which is mainly used to manufacture bridges, ships, vehicles, boilers, high-pressure vessels, oil and gas pipelines, large steel structures. Moreover, in order to ensure the quality of the low-alloy medium plate, the following performance characteristics must be possessed.

Low-alloy medium plate main features:

1. High strength: Under normal circumstances, the yield strength of the low alloy medium plate is above 300MPa.
2. High toughness: 15-20% elongation is required, and room temperature impact toughness is greater than 600kJ/m～800kJ/m. For large welded components, higher fracture toughness is also required.  
3. Good welding performance: due to the different chemical compositions of various alloy structural steels, their welding performance is also very different, generally classified according to their strength levels; alloy steels with lower strength levels (such as 30-40Kg) The performance is good, close to ordinary low-carbon steel, while the welding performance of alloy steel with strength greater than 50Kg is poor.

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