DX51D+Z275 refers to ordinary material galvanized coils with a galvanized layer of 275g.
DX51D+Z is called hot-dip galvanizing, and 275 means that 275 grams of zinc is plated on it. That is to say, a layer of zinc is plated on the hot-dip galvanizing. Generally speaking, N means that the surface has a fingerprint-resistant coating; A means that there is a fingerprint-resistant coating on the surface. Grade A surface; C means coil, usually 1.0*1250*C (thickness, width, length). Generally, the coils are random, not fixed, and are represented by C.
chemical composition:
|
|
C |
Mn |
Si |
P |
S |
ALT |
Ti |
Nb |
|
DX51D+Z |
0.04 |
0.21 |
0.02 |
0.011 |
0.012 |
0.034 |
0.0004 |
0.001 |
|
|
0.05 |
0.20 |
0.02 |
0.011 |
0.011 |
0.031 |
0.0005 |
0.001 |
technical property:
|
GRADE |
Yield Strength MPA |
Tensile Strength MPA |
longation |
coating mass |
surface quality |
|
g/m2 |
FA |
||||
|
DX51D+Z |
310 |
345 |
33.5 |
80.3 |
FA |
|
|
300 |
340 |
33.0 |
81.6 |
FA |
|
material |
width |
1000/1200/1500mm |
|
|
thickness |
0.165mm-0.8mm |
delivery time |
3- 5 days |
Since the standard electrode potential of zinc is negative than that of iron, the galvanized layer has the function of sacrificial anode protection of the steel base in water and humid air, which can greatly extend the service life of the steel.
Commonly used galvanizing layers in industry include hot-dip galvanizing, electro-galvanizing, mechanical galvanizing and thermal spray (plating) zinc. Among them, hot-dip galvanizing accounts for about 95% of the total amount of galvanizing. The amount of zinc used in hot-dip galvanizing is It accounts for 40% of zinc production worldwide and about 30% of zinc production in China.
Hot-dip galvanizing is a process technology that immerses steel, stainless steel, cast iron and other metals in molten liquid metal or alloy to obtain a coating. Hot-dip galvanizing is the most widely used steel surface treatment method with the best performance and price ratio in the world today.
Hot-dip galvanized products play an immeasurable and irreplaceable role in reducing corrosion, extending service life, and saving energy and materials of steel. At the same time, coated steel products are also high value-added short-term products supported and prioritized by the state.
