Aluminum Magnesium Zn-Al-Mg Steel Coil for PV Support Bracket
Aluminum-Magnesium-Zinc coated steel is a new type of highly corrosion-resistant coated steel sheet with a coating composition consisting of zinc as the main substrate in combination with aluminum (about 11%), magnesium (about 3%) and a trace amount of silicon. Adding Al, Mg, and Si creates a composite effect that significantly improves corrosion resistance.
Compared with hot-dip galvanized steel sheet and hot-dip galvanized-5% aluminium alloy steel sheet, it has less adhesion but equal corrosion resistance. Additionally, it can be used instead of stainless steel or aluminium sheet due to its excellent red rust resistance.
Product Specifications
| Product Name |
ZN-AL-MG steel coil |
| Coating |
ZAM81-ZAM120 |
| Thickness |
0.12-6.00mm or customer's requirement |
| Width |
600mm-1500mm, according to customer's requirement |
| Zinc coated |
30g-275g/m² |
| Type of Coating |
Hot Dipped |
| 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) |
| Coil ID |
508mm or 610mm |
| Coil Weight |
3-20 metric ton per coil |
| Standard |
JIS 3302 / ASTM A653 / EN10143 AISI, ASTM, DIN, GB, JIS G3302 G3312 G3321, BS |
| Technique |
Hot Rolled / Cold Rolled |
| Origin |
China |
| Certificates |
API ISO9001-2008, SGS, BV |
| Delivery Time |
Usually within 10-45 days after receipt of advance payment |
Product Applications:
- Fence, greenhouse, door pipe
- Low pressure liquid, water, gas, oil, line pipe
- For both indoor and outdoor building construction
- Widely used in scaffolding construction which is much cheaper and convenient
Compared with traditional coatings such as hot-dip galvanizing, galvanized aluminum, and zinc-iron alloys, zinc-aluminum-magnesium coatings have superior corrosion resistance:
- The zinc-aluminum-magnesium alloy coating is relatively thin and dense, making it less likely to peel off
- Corrosion products flow and wrap around cuts, providing better protection for cuts and defects
- Excellent corrosion resistance in harsh environments (animal husbandry, coastal areas, etc.)
- Can replace some stainless steel with low requirements or be galvanized after processing, simplifying user processing procedures
Mechanical Properties
| Grade |
Yield Strength (MPa) |
Tensile Strength (MPa) |
| DC51D+ZM |
- |
270～500 |
| DC52D+ZM |
140～300 |
270～420 |
| DC53D+ZM |
140～220 |
270～350 |
| S250GD+ZM |
250 |
330 |
| S280GD+ZM |
280 |
360 |
| S320GD+ZM |
320 |
390 |
| S350GD+ZM |
350 |
420 |
| S390GD+ZM |
390～580 |
460 |
| S420GD+ZM |
420～610 |
480 |
| S450GD+ZM |
450～640 |
510 |
| S550GD+ZM |
550 |
560 |
| HC260LAD+ZM |
260～330 |
350～430 |
| HC340LAD+ZM |
340～420 |
410～510 |
| HC220YD+ZM |
220～280 |
340～420 |
| HCT590X+ZM |
330～430 |
590 |
Application Scenarios
Customer Visit
Frequently Asked Questions
Q: Can ZM steel be welded?
A: Yes, it is suitable for standard welding processes.
Q: What industries use ZM steel coils?
A: Construction, solar energy, automotive, and agriculture industries.
Q: Is ZM steel used in solar mounting systems?
A: Yes, it is widely used for PV mounting structures.
Q: What thickness options are available for ZM coating?
A: Common coatings include ZM30, ZM60, ZM100, ZM120, ZM275, etc.
Q: What base steel grades are used with ZM coating?
A: Common grades include DC51D, S350GD, S420GD, and similar.
Q: Does ZM steel require extra surface treatment?
A: Usually no, it can be used directly after coating.
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