Manganese plays an important role in ASTM A588/A588M weathering steel

ASTM A588/A588M weathering steel, Weathering steel materials are widely used in construction, bridge, shipbuilding, vehicles and other fields. Due to the complex environment conditions of steel, various requirements are put forward for the application of steel, such as the rust resistance of railway vehicles, the corrosion of steel used for hull and offshore oil platform, etc.

The basic phases of ASTM A588/A588M weathering steel, structural steel in the annealed state are ferrite and carbide. The alloy elements are dissolved in ferrite to form alloy ferrite, which depends on solid solution strengthening to increase strength and hardness, but at the same time reduce plasticity and toughness. The addition of alloying elements reduces the carbon content of the eutectoid point, which increases the proportion of pearlite in the structure and reduces the distance of the pearlite layer. This also increases the strength of the steel and reduces the plasticity.

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