STEEL SHEET WITH HIGH WORKABILITY THAT HAS A COATING FROM AL-BASED ALLOYS OBTAINED BY SUBMERSION IN MELT Russian patent published in 2018 - IPC C23C2/12 C22C21/02 

FIELD: metallurgy.

SUBSTANCE: invention relates to a steel sheet coated with an Al-based alloy impregnated into a melt having a high workability. Al-based alloy coating layer provided by immersion in the melt contains from 1.0 to 12.0 % by weight of silicon and from 0.002 to 0.080 % by weight of boron and is formed on the surface of the steel substrate sheet, the coating layer having a ratio I_MAX/I₀, equal to 2.0 or more, obtained by measuring the depth profile with the help of optical emission spectrometry with a glow discharge (GDS) from the outer surface into the depth of the coating layer, where I_MAX is the maximum intensity of detection of boron in zones with a spray depth from 0 to 1.0 mcm, and I₀ is the average intensity of detection of boron within the depth of spraying from 1.0 to 5.0 mcm. Invention is intended to increase the resistance to scuffing of an Al-based alloy coating, applied by immersion in a melt of a steel sheet.

EFFECT: invention is intended to increase the resistance to scuffing of an Al-based alloy coating deposited by melt-casting a steel sheet.

6 cl, 3 dwg, 2 tbl