Title of the invention: coated steel member, coated steel sheet and method for manufacturing them. Technical field [0001] The present invention relates to coated steel members, coated steel sheets, and methods for manufacturing them. Background technology [0002] In the field of steel sheets for automobiles, the application of steel sheets with high tensile strength is expanding in order to achieve both fuel efficiency and collision safety against the background of recent stricter environmental regulations and collision safety standards. However, as the strength increases, the press formability of the steel sheet decreases, which makes it difficult to manufacture a product having a complicated shape. [0003] Specifically, due to the decrease in ductility of the steel sheet due to the increase in strength, there is a problem of fracture of the highly processed part. In addition, residual stress after machining causes springback and wall warpage, which causes a problem that dimensional accuracy deteriorates. Therefore, it is not easy to press-mold a steel sheet having a high strength, particularly a tensile strength of 780 MPa or more, into a product having a complicated shape. It should be noted that roll forming rather than press forming makes it easy to process high-strength steel sheets, but its application is limited to parts having a uniform cross section in the longitudinal direction. [0004] Therefore, in recent years, for example, as disclosed in Patent Documents 1 to 3, a hot stamping technique has been adopted as a technique for press-molding a material that is difficult to form, such as a high-strength steel plate. The hot stamping technique is a hot stamping technique in which a material to be molded is heated and then molded. [0005] In this technology, since the material is heated before molding, the steel material is soft and has good moldability at the time of molding. As a result, even a high-strength steel material can be accurately formed into a complicated shape. Further, in the hot stamping technique, since quenching is performed at the same time as molding by a press die, the steel material after molding has sufficient strength. [0006] For example, according to Patent Document 1, it is possible to impart a tensile strength of 1400 MPa or more to a steel material after molding by a hot stamping technique. Prior art literature Patent documents [0007] Patent Document 1: Japanese Unexamined Patent Publication No. 2002-102980 Patent Document 2: Japanese Unexamined Patent Publication No. 2012-180594 Patent Document 3: Japanese Unexamined Patent Publication No. 2012-1802 Patent Document 4: Japanese Patent Application Laid-Open No. 2003-183802 Patent Document 5: Japanese Unexamined Patent Publication No. 2004-124208 Patent Document 6: Japanese Unexamined Patent Publication No. 2012-62,500 Patent Document 7: Japanese Unexamined Patent Publication No. 2003-268489 Patent Document 8: Japanese Unexamined Patent Publication No. 2017-179589 Patent Document 9: Japanese Unexamined Patent Publication No. 2015-113500 Patent Document 10: Japanese Patent Application Laid-Open No. 2017-525849 Patent Document 11: Japanese Unexamined Patent Publication No. 2011-122207 Patent Document 12: Japanese Unexamined Patent Publication No. 2011-246801 Patent Document 13: Japanese Unexamined Patent Publication No. 2012-1816 Outline of the invention Problems to be solved by the invention [0008] Currently, with the setting of challenging fuel efficiency targets in each country, higher strength steel materials are required to reduce the weight of the vehicle body. Specifically, a high-strength steel material exceeding 1.5 GPa, which is a general strength for hot stamping, is required. [0009] By the way, when a high-strength steel plate having a strength of more than 1 GPa is applied to an automobile, not only the above-mentioned formability and toughness after molding but also hydrogen brittleness is required. If the high-strength steel sheet does not have sufficient hydrogen brittleness resistance, the steel may corrode during use by general users after the automobile is shipped to the market, and hydrogen generated during the corrosion reaction may cause embrittlement cracking. [0010] In the region where the strength exceeds 1.5 GPa, the hydrogen embrittlement sensitivity of the steel material increases rapidly, so there is a concern about hydrogen embrittlement cracking even in the surface-coated steel sheet having corrosion resistance. Therefore, in order to put a high-strength steel material exceeding 1.5 GPa into practical use as a vehicle body, it is necessary to have a technique for providing a coated steel member having more corrosion resistance than the conventional one and excellent hydrogen brittleness resistance in a corrosive environment. [0011] Regarding high-strength steel materials exceeding 1.5 GPa, for example, Patent Document 2 discloses a hot press-formed product having excellent toughness and a tensile strength of 1.8 GPa or more. However, measures against hydrogen embrittlement in a corrosive environment are not sufficient, and it may not be possible to meet safer demands for use as an automobile member. [0012] Further, Patent Document 3 discloses a steel material having an extremely high tensile strength of 2.0 GPa or more, and further having good toughness and ductility. However, measures against hydrogen embrittlement in a corrosive environment are not sufficient, and it may not be possible to meet safer demands for use as an automobile member. [0013] Regarding corrosion resistance, for example, Patent Document 4 discloses a high-strength Al-plated steel sheet having excellent corrosion resistance after painting. However, there is no description about hydrogen brittleness resistance, and it is not suitable for actual use of high-strength steel materials exceeding 1.5 GPa. [0014] Further, Patent Document 5 discloses a high-strength surface-treated steel sheet having Ni, Cu, Cr, Sn layers having excellent corrosion resistance after coating, and Patent Document 6 discloses a Ni, Cr, Cu, Co-plated steel sheet. However, there is no description about hydrogen brittleness resistance, and it is not suitable for actual use of high-strength steel materials exceeding 1.5 GPa. [0015] Regarding hydrogen brittleness, for example, Patent Documents 7, 8 and 9 disclose hot stamping materials having excellent hydrogen brittleness in a hydrochloric acid immersion environment. However, the hydrogen brittleness in an air corrosion environment and the hydrogen brittleness in a solution immersion environment such as hydrochloric acid often do not match, and are not suitable for actual use of high-strength steel materials exceeding 1.5 GPa. [0016] Further, Patent Document 10 discloses a hot stamping material in which Ni in a steel material is concentrated on the surface layer, and describes that it has an effect of suppressing hydrogen intrusion during heating in the hot stamping process. However, there is no description about hydrogen brittleness resistance in a corrosive environment during actual use, and it is not suitable for actual use of high-strength steel materials exceeding 1.5 GPa. [0017] Further, Patent Documents 11, 12, and 13 indicate a hot stamping material in which Ni is diffused from a Ni-based plating layer to a steel sheet surface layer, and it is described that it has an effect of suppressing hydrogen intrusion in a corrosive environment. However, since the hydrogen brittleness of the steel material is not sufficient, it is insufficient for the actual use of a high-strength steel material exceeding 1.5 GPa. [0018] The present invention has been made to solve the above problems, and provides a coated steel member, a coated steel sheet, and a method for producing the same, which have high tensile strength and excellent hydrogen brittleness in a corrosive environment. The purpose is. Means to solve problems [0019] The gist of the present invention is the following coated steel members, coated steel sheets, and methods for manufacturing them. Hereinafter, an uncoated steel sheet that is a material for a coated steel sheet is simply referred to as a "steel sheet". [0020] (1) The surface is provided with an Al—Fe-based coating, and the above-mentioned Al—Fe-based coating contains Cu and at least one of Mo, Ni, Mn, and Cr in a mass% of 0.12% or more. The content of Cu, Mo, Ni, Mn, and Cr is Cu + 0.01 × 63.5 (Mo / 95.9 + Ni / 58.7 + Mn / 54.9 + Cr / 52.0) ≧ 0.12% in mass%. A coated steel member characterized by satisfying. [0021] (2) The thickness of the Al—Fe-based coating is 10 to 100 μm, the chemical composition of the Al—Fe-based coating is mass%, and the average value of the Al content in the thickness direction: 20.0% or more. , Fe content average value in the thickness direction: 50.0% or more, Cu content minimum value in the thickness direction: 0.06% or more, Cu content maximum value and minimum value in the thickness direction The coated steel member according to (1) above, which satisfies the ratio: 1.4 or more. [0022] (3) The chemical composition of the portion of the coated steel member excluding the Al—Fe-based coating is C: 0.25 to 0.60%, Si: 0.25 to 2.00%, Mn: in mass%. 0.30 to 3.00%, P: 0.050% or less, S: 0.0100% or less, N: 0.010% or less, Ti: 0.010 to 0.100%, B: 0.0005 to 0.0100%, Mo: 0.10 to 1.00%, Cu: 0.01 to 1.00%, Cr: 0 to 1.00%, Ni: 0 to 1.00%, V: 0-1 .00%, Ca: 0 to 0.010%, Al: 0 to 1.00%, Nb: 0 to 0.10%, Sn: 0 to 1.00%, W: 0 to 1.00%, Sb : 0 to 1.00%, REM: 0 to 0.30% Residue: The coated steel member according to (1) or (2) above, which is Fe and impurities. [0023] (4) The coated steel member according to any one of (1) to (3), wherein the Al—Fe-based coating contains 1 to 20% of Si in mass%. [0024] (5) The steel sheet has a Cu-concentrated layer on the surface, and the Cu-concentrated layer has a Cu surface-concentration degree of 1.2 or more, and is further on the Cu-concentrated layer. A coated steel sheet having an Al-based coating and having an average crystal grain size of 30 μm or less. Here, the Cu surface concentration indicates the ratio of (maximum content of Cu in the range of 0 to 30 μm from the surface of the steel sheet) / (average content of Cu in the depth of 200 μm from the surface of the steel sheet). The surface of the steel sheet refers to a position at a depth where GDS is performed in the plate thickness direction from the surface of the coated steel sheet and the Fe content becomes 90%. [0025] (6) It is composed of a steel plate, an intermediate layer located on the surface of the steel plate, and an Al-based coating located on the surface of the intermediate layer, and the intermediate layer contains Cu, and the intermediate layer is Cu. A coated steel sheet containing at least one of Mo, Ni, Mn, and Cr in a mass% of 30% or more. [0026] (7) It is composed of a steel sheet and an Al-based coating located on the surface of the steel sheet, and the Al-based coating contains Cu, and the Al-based coating is Cu and Mo, Ni, Mn, and Cr. A coated steel sheet containing at least one type in a total of 1.0% or more in mass%. [0027] (8) The chemical composition of the steel plate is C: 0.25 to 0.60%, Si: 0.25 to 2.00%, Mn: 0.30 to 3.00%, P: 0 in mass%. .050% or less, S: 0.0100% or less, N: 0.010% or less, Ti: 0.010 to 0.100%, B: 0.0005 to 0.0100%, Mo: 0.10 to 1 .00%, Cu: 0.01 to 1.00%, Cr: 0 to 1.00%, Ni: 0 to 1.00%, V: 0 to 1.00%, Ca: 0 to 0.010% , Al: 0 to 1.00%, Nb: 0 to 0.10%, Sn: 0 to 1.00%, W: 0 to 1.00%, Sb: 0 to 1.00%, REM: 0 to 0.30% Remaining: The coated steel plate according to any one of (5) to (7) above, which is Fe and impurities. [0028] (9) The method for producing a coated steel sheet according to (5), wherein the slab is heated at 1100 to 1350 ° C., the time from the end of rough rolling to the start of finish rolling is t 1 (hr), and the end of rough rolling is finished. When the average temperature of the coarse bar until the start of rolling is T 1 (° C), the above is heated under the conditions that (T 1 + 273) × (logt 1 + 20) ≧ 20000 and the finish rolling end temperature is Ar 3 points to 1000 ° C. A step of hot-rolling a slab to obtain a hot-rolled steel sheet, a step of cooling the hot-rolled steel sheet at an average cooling rate of 10 ° C./s, a step of winding the cooled steel sheet at 700 ° C. or lower, and a step of winding the rolled steel sheet. A method for producing a coated steel sheet, which comprises a step of pickling. [0029] (10) The pickling uses hydrochloric acid or sulfuric acid, the pickling temperature is 80 to 90 ° C., the acid concentration α (%), and the pickling time t (s) are 6 ≦ α <14, 0