DX51D Galvanized steel Coil

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.

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.

DX51D Equivalent

• Japanese standard SGCC JIS G 3302

• Chinese Standard 01 gb2518-2004

• German standard ST02Z

• American Standard CS-B ASTM A 653