Products Description
Hot Dip Alu-Zn-Mg Alloy Coated Steel is a new type of highly corrosion-resistant metallic coated steel plate. The Alu-Zn-Mg composition includes 5-57% aluminum, 43-86% zinc, 2-3% magnesium. 1.5% silicon and other elements.The thickness range that can be produced is 0.27mm-9.00mm, and the width range that can be produced is: 580mm-1250mm.
Compared with traditional hot-dip galvanizing, Hot Dip Alu-Zn-Mg Alloy Coated Stee has significantly improved plane corrosion resistance and notch corrosion resistance. It is widely used in the construction and electrical appliance industries and helps to greatly increase the service life of steel plates.
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Zn-Al-Mg Steel Products Show

Grade S280GD+ZM
S280GD+ZM steel quality: Structural quality for construction
S280GD+ZM steel coating finish:
N (Normal spangle), M (Minimized spangle), R (Regular Zinc-magnesium alloy coating)
S280GD+ZM steel Coil/strip/sheet surface quality:
A (As coated surface), B (Improved surface),C (Best quality surface)
S280GD+ZM steel Coil/strip/sheet surface treatment:
C (Chemical passivation),O (oiling), CO(Chemical passivation and oiling), S ( Seales), P(Phosphated), U(Untreated)
S280GD+ZM steel Coil/strip/sheet coating mass:ZM060, ZM070, ZM080, ZM090, ZM100, ZM120, ZM130, ZM140, ZM150, (ZM160), (ZM175), (ZM200), (ZM250), (ZM300), (ZM310), (ZM350), (ZM430),
S280GD+ZM steel Coil/strip/sheet coating:Zinc-magnesium alloy (ZM) : application of a zinc-magnesium coating by immersing the prepared strip in a molten bath of zinc-aluminium-magnesium.
EN10346 S280GD+ZM steel suitable size: Thickness 0.3mm-3.0mm
S280GD+ZM steel
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S280GD+ZM steel chemical composition % by mass max
| Grade |
Material No. |
C |
Si |
Mn |
P |
S |
|
S280GD+ZM |
1.0244+ZM |
0.20 |
0.60 |
1.70 |
0.10 |
0.045 |
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S280GD+ZM steel Mechanical properties
| Grade |
Material No. |
Yield Strength MPa |
Tensile strength MPa min |
Elongation A80 min |
|
S280GD+ZM |
1.0244+ZM |
280 |
360 |
18 |
Zn-Al-Mg Steel Description
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Item
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Brand Name
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GNEE STEEL
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Application
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Construction, light industry, automobile, etc
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Delivery form
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Steel Coil/Sheet
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Thickness
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0.2-8.0MM
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Width
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600-1500MM
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Length
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As clients' requests
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Certificate
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API, CE, ROHS, SNI, BIS, SASO, PVOC, SONCAP, SABS, sirm, tisi, KS, JIS, GS, ISO
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Grade
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DX51D-DX57D S220GD S250GD S550GD
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Coating
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ZM40-80-600g/㎡
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Processing Service
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Bending, Welding, Decoiling, Cutting, Punching
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Content
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Zn: 90% Al: 3%-11% Mg: 1.5%-3%
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Surface Treatment
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Chromated/Oiled
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Delivery Time
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3-15 days
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Base material
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Cold rolled steel
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Coil Weight
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5-10 MT
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PAYMENT TERM
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TT, LC, DA,DP, Western Union
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Send Your Specifications and Receive a Customized Solution.
Zn-Al-Mg Steel Performance Characteristics
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Grade
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YS
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TS
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Elongation after fracture of the following nominal thickness (mm): a80mm,%, ≥
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MPA
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MPA
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0.4~0.5
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>0.5~0.7
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>0.7
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-
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270~500
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18
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20
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22
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140~300
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270~420
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22
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24
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26
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DC53D+ZM
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140~220
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270~350
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30
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32
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32
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S250GD+ZM
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250
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330
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15
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17
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19
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S280GD+ZM
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280
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360
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14
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16
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18
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S320GD+ZM
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320
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390
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13
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15
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17
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S350GD+ZM
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350
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420
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12
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14
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16
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S390GD+ZM
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390~580
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460
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12
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14
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16
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S420GD+ZM
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420~610
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480
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11
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13
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15
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S450GD+ZM
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450~640
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510
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10
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12
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14
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S550GD+ZM
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550
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560
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-
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-
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-
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HC260LAD+ZM
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260~330
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350~430
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22
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24
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26
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HC340LAD+ZM
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340~420
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410~510
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17
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19
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21
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HC220YD+ZM
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220~280
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340~420
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28
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30
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32
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HCT590X+ZM
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330~430
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590
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16
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18
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20
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Request Latest Steel Price Today
Product Characteristics of Zn-Al-Mg Steel
1,Excellent corrosion resistance
Zn-Al-Mg coatingsteel has better corrosion resistance. The increase of Al and Mg content in a certain range makes the corrosion resistance of Zn - Al-Mg coating steel sheet increase several times higher than that of Gl.
2,Good abrasion resistance
With low friction coefficient and stable friction characteristics, it is very favorable for punching. It can reduce the amount of wear on the coating, thereby reducing the part's pulling defects.
3,Good welding performance
The Zn-Al-Mg coating steel has good welding performance. The addition of magnesium can reduce the spatter of the weld attachment in the laser welding process and improve the welding performance.
Packaging and Shipping

FAQ
Q1: What are the advantages of S280GD+ZM steel?
A: It provides higher corrosion resistance, better edge protection and longer service life compared with traditional galvanized steel.
Q2: What are the applications of S280GD+ZM Steel Coil?
A: It is widely used for solar mounting systems, photovoltaic brackets, construction structures and industrial components.
Q3: What standards does S280GD+ZM steel meet?
A: S280GD+ZM is commonly produced according to EN 10346 standards with different ZM coating options.
Q4: Can S280GD+ZM be used for solar mounting structures?
A: Yes. Its high strength and excellent corrosion resistance make it an ideal material for PV mounting systems.
Q5: Why choose GNEE S280GD+ZM Steel Coil?
A: GNEE supplies reliable quality S280GD+ZM coils with competitive prices, complete certificates and customized solutions.









