DX54D is a type of cold-rolled steel sheet, typically with a thickness between 0.2 and 3.0 mm, offering good stamping performance and surface smoothness. This type of substrate is usually made from high-purity cold-rolled strip steel with low impurity content. +Z indicates the use of hot-dip galvanizing, with a zinc layer thickness generally ranging from 50-275 g/m² (adjusted according to standards). Hot-dip galvanizing forms a uniform zinc layer on the steel sheet surface, effectively isolating it from air and moisture, and improving the steel's corrosion resistance.

DX54D+Z is a general-purpose ultra-deep drawing steel with a cold-rolled substrate, continuously hot-dip galvanized. It belongs to the high-end category of galvanized steel for cold forming. Its core advantages lie in its low yield strength (≤180MPa), ultra-high elongation after fracture (≥38%), and the deep compatibility with the corrosion resistance of the pure zinc coating. Compared to DX53D+Z, its yield strength is reduced by 15%, and its elongation is increased by 10%, enabling ultra-deep drawing with a drawing ratio ≥2.5. Compared to specialized deep drawing steels (such as DC54D+Z), it is more compatible with general-purpose cold forming equipment, requiring no customized processes, achieving a triple benefit of "complex forming + corrosion resistance + low cost".

The DX54D+Z is based on "ultra-low strength + ultra-high versatility formability," with typical indicators based on EN 10346 standards and measured data:
Yield Strength (Rp₀.₂): 120-180 MPa. Low yield strength reduces wrinkling during forming, suitable for general-purpose molds.
Tensile Strength (Rm): 270-350 MPa. Meets the basic load-bearing requirements of formed parts.
Elongation after Fracture (A₈₀): ≥38% (thickness 0.8-2.0mm). Ultra-high ductility suitable for complex deep drawing and curved surface forming.
Cupping Value (IE, 1.0mm thick): ≥9.0mm. Represents ultra-deep drawing capability, suitable for large deformation processes.
Strain Hardening Index (n value): ≥0.22. Uniform work hardening reducing excessive local thickness reduction.
Plastic Strain Ratio (r value): ≥1.8. Low planar anisotropy, high forming accuracy with general-purpose equipment.

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