FIELD: chemistry.
SUBSTANCE: invention relates to the field of chemistry for use in the automotive industry and relates to a coated metal sheet for an automobile. Sheet contains: a metal sheet and a coating film present on at least one surface of this metal sheet. Coating film contains an organic resin, electrically conductive pigments and anti-corrosive pigments, and the Martens HM microhardness at -20 °C of the coating film surface is from 10 to 200 (mg/mm2) at 20 points or more when measured at 100 points, and the Martens HM microhardness at 40 °C of the coating film surface is from 200 to 200,000 (mg/mm2) at 5 points or more when measured at 100 points.
EFFECT: invention provides a coating system in which a coated metal sheet is used for an automobile body element, and the resistance to shearing has the coating film itself, which eliminates the use of a primer against shear.
10 cl, 9 tbl, 7 dwg
Authors
Dates
2018-05-30—Published
2015-09-30—Filed