chemical composition of nm400 thermomechanical rolling

ArcelorMittal USA said chemical composition of NM400 it was planning to work with the United Steelworkers union "to minimize the impact on its employees. The company will continue to communicate with its customers to understand the market impact of the outbreak of covid-19, which may require additional capacity optimization to maintain a balance between supply and demand.

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Shipbuilding steel plates are used to manufacture the hull of marine and inland ships. High strength, plasticity, toughness, cold bending performance, welding performance and corrosion resistance are required for shipbuilding steel plates. Boiler steel plates are used to manufacture various boilers and important accessories. As the boiler steel plate works under medium temperature (below 350℃) and high pressure, it is also subject to impact, fatigue load and water and gas corrosion. The chemical composition of NM400, boiler steel plate is required to ensure a certain strength and have good welding and cold bending properties.

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chemical composition of NM400 controlled rolling is that, on the basis of adjusting the chemical composition of chemical composition of NM400, by controlling the heating temperature, rolling temperature, deformation system and other process parameters, the change law of austenite structure and the microstructure of phase transformation products are controlled, so as to achieve the purpose of refining the structure and improving the strength and toughness of chemical composition of NM400.

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