What Is DX54D Hot-dip Galvanized Steel?

DX54D is alloyed hot-dip galvanized steel, which is a kind of shallow-stretched galvanized steel processed with DC04 as the base material, and the surface is plated with a layer of zinc.

D-Stamping Steel
X-cold rolled or hot rolled
54 – Stamping class (the higher the number, the better the stamping performance)
D – hot-dip coated steel plate

Alloyed high-grade steel DX54D is available in the following hot-dip coatings: DX54D+Z (galvanized), DX54D+ZF (galvanized-iron), DX54D+ZA (galvanized-aluminum), DX54D+AZ (aluminum-zinc), DX54D +AS (aluminum-silicon-coated).

Mechanical properties
In order to meet the needs of ultra-deep drawing, in addition to the low yield strength and high elongation specified in the standard, higher r and n values are also required.

Plating
The coating and the substrate should have strong adhesion, and should not fall off during stamping deformation, and have good welding performance and corrosion resistance.

surface
Generally, the surface is required to be smooth and smooth to ensure that the surface is bright and beautiful after painting, and there are certain requirements for the surface roughness, because it will affect the stamping performance of the material and the adhesion of the paint film.

Steel type

* Comparative grade, therefore minor deviations from DIN EN values possible

DX54D | 1.0952: Mechanical properties (transverse)

DX54D | 1.0952: Chemical composition (heat analysis)

1) Where no yield strength is defined, the respective values shall apply to the 0.2 % proof stress Rp0.2, otherwise for the lower yield strength (ReL).

2) Reduced minimum values of elongation at fracture apply to product thicknesses 0.50 mm < t < 0.70 mm (minus 2 units), 0.35 mm < t < 0.50 mm (minus 4 units), and t < 0.35 mm (minus 7 units).

3) The maximum yield strength for surface class A is Re = 360 MPa.

4) For product thicknesses of 1.5 mm < t < 2 mm, the minimum r90 value is reduced by 0.2, and for t ≥ 2 mm by 0.4.

5) Depending on the product thickness, the minimum r90 value is reduced as follows: 0.50 mm < t < 0.70 mm by 0.2; 0.35 mm < t < 0.50 mm by 0.4, and t < 0.35 mm by 0.6.

Also depending on the product thickness, the minimum n90 value is reduced as follows: 0.50 mm < t < 0.70 mm by 0.01; 0.35 mm < t < 0.50 mm by 0.03, and t < 0.35 mm by 0.04.

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