Hot-rolled flat steel product having a tensile strength Rm of at least 550 MPa, determined according to DIN EN ISO 6892-1:2017, a hole expansion ratio λ of at least 30 %, determined according to standard ISO 16650:2017, and a structure consisting to an extent of at least 90 area% of ferrite and as the balance up to 10 area% of perlite or cementite, in which carbonitride precipitates having a mean diameter of at most 10 nm are embedded, consisting of a steel which in weight% consists of 0.02 - 0.5 % C, ≤ 0.7 % Si, ≤ 1.0 % Al, 0.2 - 2.5 % Mn, 0.05 - 0.5 % Cr, ≤ 0.02 % P, ≤ 0.005 % S, ≤ 0.01 % N, ≤ 0.1 % Cu and also of at least one element that forms the carbonitride precipitates and is from the group of Ti, Nb and V, and, as the balance, consists of iron and unavoidable impurities, with provisos as follows: - If V is present, the sum of the contents Ti GEW of Ti and Nb GEW of Nb is limited to at most 0.01 weight%; - if Ti and/or Nb are present, the V content V GEW is at most 0.01 weight%; - for a total concentration X GEW in weight% = Ti GEW + (V GEW /1.06)+(Nb GEW /1.94) it is the case that 0.02 % ≤ X GEW ≤ 0.5 %, - for a proportion Prop 1 = X AT + Cr AT / C AT + N AT it is the case that 0.5 ≤ Prop 1 ≤ 2.0, where X AT = Ti AT + V AT + Nb AT, where Ti AT corresponds to the Ti content Ti GEW converted into atom%, V AT corresponds to the V content V GEW converted into atom%, Nb AT corresponds to the Nb content Nb GEW converted into atom%, Cr AT corresponds to the Cr content Cr GEW converted into atom%, C AT corresponds to the C content C GEW converted into atom% and N AT corresponds to the N content N GEW converted into atom% and where the contents Ti GEW, V GEW, Nb GEW, Cr GEW, C GEW and N GEW are each indicated in weight%, where the unavoidable impurities are limited to at most 0.01 weight% Ca, 0.05 weight% Mo, 0.05 weight% W, 0.002 weight% B, 0.1 weight% Cu, 0.1 weight% Ni, 0.05 weight% Sn, 0.02 weight% As, 0.02 weight% Co, 0.002 weight% Zr, in each case 0.002 weight% rare earths, 0.005 weight% 0 and 0.001 weight% H. - If V is present, the sum of the contents Ti GEW of Ti and Nb GEW of Nb is limited to at most 0.01 weight%; - if Ti and/or Nb are present, the V content V GEW is at most 0.01 weight%; - for a total concentration X GEW in weight% = Ti GEW + (V GEW /1.06)+(Nb GEW /1.94) it is the case that 0.02 % ≤ X GEW ≤ 0.5 %, - for a proportion Prop 1 = X AT + Cr AT / C AT + N AT it is the case that 0.5 ≤ Prop 1 ≤ 2.0, where X AT = Ti AT + V AT + Nb AT, where Ti AT corresponds to the Ti content Ti GEW converted into atom%, V AT corresponds to the V content V GEW converted into atom%, Nb AT corresponds to the Nb content Nb GEW converted into atom%, Cr AT corresponds to the Cr content Cr GEW converted into atom%, C AT corresponds to the C content C GEW converted into atom% and N AT corresponds to the N content N GEW converted into atom% and where the contents Ti GEW, V GEW, Nb GEW, Cr GEW, C GEW and N GEW are each indicated in weight%, where the unavoidable impurities are limited to at most 0.01 weight% Ca, 0.05 weight% Mo, 0.05 weight% W, 0.002 weight% B, 0.1 weight% Cu, 0.1 weight% Ni, 0.05 weight% Sn, 0.02 weight% As, 0.02 weight% Co, 0.002 weight% Zr, in each case 0.002 weight% rare earths, 0.005 weight% 0 and 0.001 weight% H.