Steel material coated with Zn Al hot dip with excellent ability to work by bending and method of production of the same

摘要

Steel material coated with Zn Al hot dip with excellent ability to work by bending and its production method.The present invention relates to a steel material coated with Zn Al hot dip ensuring excellent corrosion resistance and excellent ability to work by bending of the backing layer, and a method for their production, that is, a steel material coated with L IgA Zn - AI hot dip with excellent ability to work by bending.Having a coating layer comprising, in terms of mass%, 25 to 85%, 0.05% to 5% of one or both between CR and Mn and Si in an amount of 0.5 to 10% of the content of there, with the balance being Zn and unavoidable impurities, where the size. The middle of the crystal of zinc on the surface of R. Evestimento is 0.5 mm or more; and its production method.