Definition
DX: The first letter D represents flat steel for cold forming, and the second letter X represents that the rolling state of the substrate is not specified.
51~57: The numbers indicate the steel grade serial number; the D after the two digits is the code of hot-dip galvanizing. Z means that the coating is pure zinc, ZF means galvanized iron alloy, AZ means galvanized zinc.
DX51D is a European standard, galvanized with 51 steel coil raw materials, equivalent to SGCC. DX51D refers to the bending and forming grade galvanized steel coil sheet, the steel grade serial number is 51, with low carbon steel as the base material.
Chemical Composition Of DX51D Steel
DX51D is a galvanized sheet of bending and forming grade, the steel grade serial number is 51, with low carbon steel as the base material.
Steel grade serial numbers 52-56 are steel plates or strips for stamping.
The main chemical components of DX51D are as follows:
| C% | Si% | Mn% | P% | S% | Alt% |
|---|---|---|---|---|---|
| ≤0.07 | ≤0.03 | ≤0.50 | ≤0.025 | ≤0.025 | ≥0.020 |
Mechanical Properties Of DX51D Steel
| Quality | Material-No. | Possible coating | Testing direction | Yield point Rp0,2 (MPa) | Minimum yield strength, ReH (MPa) | Minimum elongation ratio, % | Nominal gauge, mm | |
|---|---|---|---|---|---|---|---|---|
| DX51D | 1.0917 | +Z, +ZF, +ZA, +AZ, +AS, +ZM | Q | - | 270-500 | 22 | 0.57-2.00 |
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