Cold-formed high-corrosion-resistance color-coated steel plate and production method thereof

The invention discloses a cold-formed high-corrosion-resistance color-coated steel plate and a production method thereof, and belongs to the technical field of metal iron-based surface coating. The steel comprises the following chemical components in percentage by weight: 0.01%-0.10% of C, 0.08%-0.10% of Si, 0.40%-0.50% of Mn, 0.030%-0.035% of P, 0.025%-0.035% of S and the balance of Fe and other inevitable impurities. Wherein the weight of a double-sided coating of the high-corrosion-resistance color coated steel plate is greater than or equal to 100g/m < 2 >, and the coating comprises the following chemical components in percentage by weight: 1-2% of Mg, 1-2% of Si, 50-55% of Al and the balance of Zn. By means of the manufacturing method, the high-corrosion-resistance color-coated sheet meeting the complex cold forming machining requirement can be manufactured, the problems that a complex cold forming plating layer cracks, and the corrosion resistance and alkali resistance of a coating are low are effective