Abstract: The invention relates to a steel part, the composition of the steel of which comprises, the contents being expressed by weight: 0.040%?C?0.100%; 0.80%?Mn?2.00%; Si?0.30%; S?0.005%; P?0.030%; 0.010%?Al?0.070%; 0.015%?Nb?0.100%; 0.030%?Ti?0.080%; N?0.009%; Cu?0.100%; Ni?0.100%; Cr?0.100%; Mo?0.100%; and Ca?0.006%, the balance of the composition consisting of iron and inevitable impurities resulting from the smelting, the microstructure of the steel consisting of at least 75% equiaxed ferrite, martensite in an amount not less than 5% but not exceeding 20%, and bainite in an amount not exceeding 10%.

Abstract: The invention relates to a steel part, the composition of the steel of which comprises, the contents being expressed by weight: 0.040%?C?0.100%; 0.80%?Mn?2.00%; Si?0.30%; S?0.005%; P?0.030%; 0.010%?Al?0.070%; 0.015%?Nb?0.100%; 0.030%?Ti?0.080%; N?0.009%; Cu?0.100%; Ni?0.100%; Cr?0.100%; Mo?0.100%; and Ca?0.006%, the balance of the composition consisting of iron and inevitable impurities resulting from the smelting, the microstructure of the steel consisting of at least 75% equiaxed ferrite, martensite in an amount not less than 5% but not exceeding 20%, and bainite in an amount not exceeding 10%.

Abstract: The invention relates to a steel part, the composition of the steel of which comprises, the contents being expressed by weight: 0.040%?C?0.100%; 0.80%?Mn?2.00%; Si?0.30%; S?0.005%; P?0.030%; 0.010% S?Al?0.070%; 0.015%?Nb?0.100%; 0.030% Ti?0.080%; N?0.009%; Cu?0.100%; Ni?0.100%; Cr?0.100%; Mo?0.100%; and Ca?0.006%, the balance of the composition consisting of iron and inevitable impurities resulting from the smelting, the microstructure of the steel consisting of at least 75% equiaxed ferrite, martensite in an amount not less than 5% but not exceeding 20%, and bainite in an amount not exceeding 10%.

Abstract: The invention relates to a steel part, the composition of the steel of which comprises, the contents being expressed by weight: 0.040%?C?0.100%; 0.80%?Mn?2.00%; Si?0.30%; S?0.005%; P?0.030%; 0.010% S?Al?0.070%; 0.015%?Nb?0.100%; 0.030% Ti?0.080%; N?0.009%; Cu?0.100%; Ni?0.100%; Cr?0.100%; Mo?0.100%; and Ca?0.006%, the balance of the composition consisting of iron and inevitable impurities resulting from the smelting, the microstructure of the steel consisting of at least 75% equiaxed ferrite, martensite in an amount not less than 5% but not exceeding 20%, and bainite in an amount not exceeding 10%.

Abstract: The invention concerns a method which consists in: providing a protective treatment against corrosion to the initial sheet metal using an aqueous emulsion containing colloids based on acrylic and/or methacrylic polymer; a step which consists in applying a coat of liquid enamelling composition comprising an enamel frit capable of being vitrified; a baking step adapted to vitrify said frit. The invention is characterised in that said method does not comprise a step for degreasing said surface subsequent to the protective treatment. The invention provides the advantages of improved adherence of the enamel and a simpler process.