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DX51 Material
The material of the dx51d galvanized sheet is a non-ferrous alloy composed of zinc as the matrix and adding other elements. The main alloying elements are aluminum, copper, magnesium, and so on. Zinc alloy has a low melting point, good fluidity is easy to be plastically processed and welded, and is resistant to atmospheric corrosion.
According to the manufacturing process, it is divided into cast zinc alloy and deformed zinc alloy. Commonly used cast zinc alloys are zinc-aluminum-copper-magnesium alloys, which have good casting process performance, and the cooling rate has little effect on mechanical properties. They are mostly used in the manufacture of mechanical parts, toys, decorations, and household appliances.
Commonly used wrought zinc alloys are zinc-aluminum alloy and zinc-copper alloy.
The former contains 4% to 15% of aluminum. In order to improve the strength and hardness of the alloy, a small amount of alloying elements such as copper and magnesium are also added. It has high strength and is easy to shape, and can replace some brass or duralumin to make precision forgings.
The latter contains 0.7% to 1.5% copper. Copper can increase alloy strength and impact toughness, and reduce plasticity. Zinc-copper alloy is suitable for making daily hardware products or replacing parts of brass.
In addition, there are zinc-titanium-based, zinc-lead-cadmium-iron-based deformed zinc alloys. The supply status of wrought zinc alloy is wire, plate, forging or extrusion, etc.
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:
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| C% | Si% | Mn% | P% | S% | Alt% |
|---|---|---|---|---|---|
| ≤0.07 | ≤0.03 | ≤0.50 | ≤0.025 | ≤0.025 | ≥0.020 |
Mechanical properties of DX51D steel
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| 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 |
DX51D equivalent
Japanese standard SGCC JIS G 3302
Chinese Standard 01 gb2518-2004
German standard ST02Z
American Standard CS-B ASTM A 653
DX51D Application
Application DX51D galvanized coils are widely used for the production of steel structures, roofs, window profiles, drainage and ventilation systems, roads barriers, bridges, and household appliances (cases and internal parts).
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