Description

DX51D+Z Galvanized Steel Coil is a cold-rolled hot-dip galvanized steel widely used in the construction, home appliance, and automotive industries, conforming to the Chinese national standard GB/T 2518-2018 or the European standard EN 10346.

DX51D+Z Galvanized Steel Coil possesses excellent formability and corrosion resistance, making it suitable for complex processes such as deep drawing. The galvanized layer is typically indicated by “Zinc Coating,” such as Z60 or Z80, representing the weight of the zinc layer per square meter (in grams). Z60 is 60 g/m². Z275 Hot Dip Galvanized Steel Coil is a hot-selling high-zinc coated galvanized steel coil product.

Characteristics and Advantages of DX51D+Z Galvanized Steel Coil:

Corrosion Resistance: The zinc layer acts as a sacrificial anode to protect the substrate, extending service life, especially suitable for humid or industrial environments.

Processability: The low carbon content (C≤0.12%) and specific microstructure (such as ferrite) of DX51D+Z Galvanized Steel Coil make it easy to stamp and bend.

Surface Quality: Rust resistance can be enhanced through chromium-free passivation (environmentally friendly) or oiling. Surface finish is categorized into Grade A (high-grade) and Grade B (standard).

Applications of DX51D+Z Galvanized Steel Coil:

In the construction industry, DX51D+Z Galvanized Steel Coil is used to manufacture light steel keels, color steel plates, etc., providing structural support and aesthetic decoration for buildings.

In automotive manufacturing, DX51D+Z Galvanized Steel Coil can be used for body parts, such as doors and roofs, providing rust prevention and protection.

It is also widely used in the home appliance industry, such as for refrigerator and air conditioner casings, ensuring product quality and enhancing the appearance.

In agriculture, DX51D+Z Galvanized Steel Coil can be used to construct the framework of agricultural greenhouses, resisting outdoor environmental corrosion.

The DX51D+Z Galvanized Steel Coil is used in industries such as hardware products and shelving manufacturing to meet the rust prevention needs of different products. With its stable performance and diverse applicability, it plays an important role in many industries.

Chemical Composition of Galvanized Steel Coil:

Standard	Grade	C	Si	Mn	P	S	Ti
Forcold Forming Chinese Standard	DX51D+Z	0.12	0.5	0.6	0.1	0.045	0.3
	DX52D+Z	0.12	0.5	0.6	0.1	0.045	0.3
	DX53D+Z	0.12	0.5	0.6	0.1	0.045	0.3
	DX54D+Z	0.12	0.5	0.6	0.1	0.045	0.3
	DX56D+Z	0.12	0.5	0.6	0.1	0.045	0.3
	DX57D+Z	0.12	0.5	0.6	0.1	0.045	0.3
Forcold Forming Japanese Standard	SGCC	0.15	0.5	0.8	0.05	0.03	0.025
	SGCD1	0.12	0.5	0.6	0.04	0.03	0.025
	SGCD2	0.1	0.5	0.45	0.03	0.03	0.025
	SGCD3	0.08	0.5	0.45	0.03	0.03	0.025
	SGCD4	0.06	0.5	0.45	0.03	0.03	0.025
For Structure Japanese Standard	SGC340	0.25	0.5	1.7	0.2	0.035	0.025
	SGC400	0.25	0.5	1.7	0.2	0.035	0.15
	SGC440	0.25	0.5	2	0.2	0.035	0.15
	SGC490	0.3	0.5	2	0.2	0.035	0.025
	SGC510	0.3	0.5	2.5	0.2	0.035	0.025
For Structure AISI Standard	S220GD+Z	0.2	0.6	0.7	0.1	0.045	0.025
	S250GD+Z	0.2	0.6	0.7	0.1	0.045	0.025
	S280GD+Z	0.2	0.6	0.7	0.1	0.045	0.025
	S320GD+Z	0.2	0.6	0.7	0.1	0.045	0.025
	S350GD+Z	0.2	0.6	0.7	0.1	0.045	0.15
	S550GD+Z	0.2	0.6	0.7	0.1	0.045	0.15

Mechanical Properties of Galvanized Steel Coil:

Grade	Yield Strength MPa≥	Tensile Strength MPa≥	Elongation A%≥
DX51D Z/ZM/AZ/AM	240-380	270-500	22
DX52D Z/ZM/AZ/AM	140-300	270-420	26
DX53D Z/ZM/AZ/AM	140-260	270-380	30
DX54D Z/ZM/AZ/AM	120-220	260-350	36
S220GD Z/ZM/AM	220	300	20
S250GD Z/ZM/AZ/AM	250	330	19
S280GD Z/ZM/AM	280	360	18
S300GD A/AM	300	380	18
S320GD Z/ZM/AM	320	390	17
S350GD Z/ZM/AZ/AM	350	420	16
S450GD A/AM	450	480	15
S550GD Z/ZM/AZ/AM	550	550	–

Standards and Classifications

Technical Standard	EN10147, EN10142, DIN 17162, JIS G3302, ASTM A653
Steel Grade	Dx51D, Dx52D, Dx53D, DX54D, S220GD, S250GD, S280GD, S350GD, S350GD, S550GD; SGCC, SGHC, SGCH, SGH340, SGH400, SGH440, SGH490, SGH540, SGCD1, SGCD2, SGCD3, SGC340, SGC340 , SGC490, SGC570; SQ CR22 (230), SQ CR22 (255), SQ CR40 (275), SQ CR50 (340), SQ CR80(550), CQ, FS, DDS, EDDS, SQ CR33 (230), SQ CR37 (255), SQCR40 (275), SQ CR50 (340), SQ CR80 (550); or Customer’s Requirement
Type	Coil/Sheet/Plate/Strip
Thickness	0.12-6.00mm,or customer’s requirement
Width	600mm-1500mm, according to customer’s requirement
Type of Coating	Hot Dipped Galvanized Steel (HDGI)
Zinc Coating	30-275g/m2
Surface Treatment	Passivation(C), Oiling(O), Lacquer sealing(L), Phosphating(P), Untreated(U)
Surface Structure	Normal spangle coating(NS), minimized spangle coating(MS), spangle-free(FS)
Quality	Approved by SGS,ISO
ID	508mm/610mm
Coil Weight	3-20 metric ton per coil
Package	Water proof paper is inner packing,galvanized steel or coated steel sheet is outer packing , side guard plate,then wrapped by seven steel belt.or according to customer’s requirement
Export market	Europe, Africa, Central Asia, Southeast Asia, Middle East, South America, North America, etc