What is DX51D+Z galvanized steel coil?
DX51D+Z galvanized steel coil is a common galvanized steel coil in the European standard (EN 10346)
DX51D+Z
DX51D:
D: Ductile steel for cold forming.
X51: Minimum yield strength is 51MPa (actual tensile strength is about 270~500MPa).
D: According to EN 10346 standard, it represents general purpose cold forming steel (non-structural parts).
+Z: Hot-dip pure zinc layer (Zinc Coated), different from +ZF (zinc-iron alloy coating).
What is DX51+Z material?
The material of dx51d+Z galvanized steel is a non-ferrous alloy composed of zinc as the matrix and other elements. The main alloying elements are aluminum, copper, magnesium, etc. Zinc alloy has a low melting point, good fluidity, easy plastic processing and welding, and is resistant to atmospheric corrosion.
DX51D+Z galvanized steel coil equivalent to?
|
Standard system |
Equivalent grades |
Description |
|
China (GB) |
DC51D+Z |
Corresponds to galvanized steel for cold forming (GB/T 2518). |
|
Japan (JIS) |
SGCC |
General purpose galvanized sheet (JIS G 3302), but mechanical properties need to be checked. |
|
USA (ASTM) |
ASTM A653 CS Type B |
Commercial grade galvanized steel (similar tensile strength). |
|
Germany (DIN) |
DX51D+Z |
Consistent with EN standards. |
Is DX51D+Z galvanized steel coil of good quality?
DX51D+Z：
Substrate material: Low-carbon cold-rolled steel (similar to SPCC/DC01), suitable for cold processing such as stamping, bending, and deep drawing.
Low yield strength (≈140~280 MPa), good ductility, suitable for sheet metal parts with complex shapes
Good corrosion resistance
Galvanized layer protection: Pure zinc coating (Zinc Coated) prevents the substrate from rusting through the sacrificial anode principle.
Optional coating weight: Common Z100~Z275 (single-sided coating 100~275g/m²), which can meet different environmental requirements (such as Z180 is suitable for general outdoor buildings)
Surface treatment adaptability: It can be coated (spraying, electrophoresis), phosphating, passivation and other subsequent treatments to meet different appearance and protection requirements
What are the differences between DX51D+Z, DX51D+ZF and DX51D+AZ?
|
Comparison items |
DX51D+Z (pure zinc) |
DX51D+ZF (zinc-iron alloy) |
DX51D+AZ (aluminum zinc) |
|
Corrosion resistance |
Medium (suitable for general environment) |
Excellent (dense alloy layer) |
Excellent (Al provides long-term protection) |
|
Weldability |
General (need to optimize parameters) |
Excellent (Fe reduces resistance, less spatter) |
Poor (Al oxidation causes welding difficulties) |
|
Cost |
Low |
Medium |
High |
|
Applicable scenarios |
Construction, home appliances, general sheet metal |
Automotive parts, high-end home appliances |
Harsh environment (such as high temperature, high humidity) |
