Zinc-Aluminum-Magnesium Coated Steel Coil

Galvanized coil is a steel coil with a layer of zinc coating on its surface, mainly used for anti-corrosion protection. This material is widely applied in fields such as construction, automobiles, home appliances, and mechanical manufacturing, and is one of the indispensable metal materials in industrial production.

Baosteel

1. How to get samples to check the quality? How long can I get the samples?
After the price is confirmed, samples can be provided for your evaluation. After confirming the sample details, the samples will be ready for delivery within 3-7 days, and sent to you by courier, and arrive within 3-5 days.
2.Do you provide samples ? is it free or extra ?
Answer:The sample could can provide for customer with free,but the courier freight will be covered by customer account.
3. Do you accept the third party inspection?
Answer: Yes absolutely we accept.
4.Can you accept customization?
Answer:Yes. If you have special requirements on products or packages, we can do customization for you.
5.How do you control the quality?
Answer:We have professional inspectors to analyze chemical composition of raw materials and test the finished products strictly according to standard stipulated in the contract.  In this process, Internal and external surfaces, two ends appearance, bending degree, fixed length, outer diameter and wall thickness dimension etc will be checked one by one.  You can be assured that all the products you get from us are reliable.

Baosteel
Baosteel

Zinc-aluminum-magnesium-coated steel sheets (also known as ZAM or galvanized aluminum-magnesium alloy steel sheets) are a new generation of highly corrosion-resistant coated products developed by adding alloying elements such as aluminum and magnesium to the hot-dip galvanizing process. The zinc in the coating provides sacrificial protection, aluminum forms a dense passivation film, and magnesium activates the alloy coating, working synergistically to enhance corrosion resistance.

Depending on the alloy composition, these coatings are primarily classified into the following systems:

 

Zinc-Aluminum-Magnesium Coated Steel Coil Technical Data Sheet
Product NameZinc-Aluminum-Magnesium Coated Steel Coil (ZAM Coated Steel Coil)
Applicable StandardYB/T 4761-2019 “Continuously Hot-Dip Zinc-Aluminum-Magnesium Alloy Coated Steel Sheet and Strip”
Coating Composition Systems
Low Al-MgZn-(1.5-2.5)%Al-(1-2)%Mg (ZM) | 6-10x vs. Galvanized Steel
Medium Al-MgZn-(4-7)%Al-(2-4)%Mg (AM) | 8-12x vs. Galvanized Steel
High Al-MgZn-(10-12)%Al-(2-4)%Mg (AM) | 10-15x vs. Galvanized Steel
Al-Zn-MgAl-43.5%Zn-1.5%Si-(1.5-2)%Mg (AZM) | 10x vs. Galvalume Steel
Steel Grades
Low Carbon SteelDC51D+ZM, DC52D+ZM, DC53D+ZM (Commercial, forming, deep drawing quality)
Structural SteelS250GD+ZM ~ S550GD+ZM (Yield strength 250-550MPa)
Low Alloy High StrengthHC260LAD+ZM ~ HC340LAD+ZM
Dual Phase SteelHCT450X+ZM, HCT590X+ZM
Dimensional Specifications
Thickness0.20mm – 6.0mm
Width700mm – 1600mm
Coating Weight (Both Sides)40 – 800 g/m²
Common Coating Weights60/60, 75/75, 90/90, 100/100, 125/125, 150/150 g/m²
Coil ID508mm / 610mm
Surface Treatment
Treatment TypesC5 (Chrome-free passivation) / CO5 (Passivation + Oiling) / N5 (Anti-fingerprint) / O (Oiling) / U (No treatment)
Performance Advantages
Corrosion Resistance6-15x longer than traditional galvanized steel
Cut-edge Self-healingForms protective film on cut edges, automatically repairs exposed substrate
High Temperature ResistanceWithstands up to 380°C
FormabilityExcellent stamping, bending and welding properties
Main Applications
IndustriesSolar Industry, Construction, Home Appliances, Automotive, Electrical Industry, Agriculture
Packaging & Delivery
PackagingStandard export packaging: inner kraft paper + waterproof film + outer galvanized steel sheet + steel straps
Lead Time7-35 days
Payment TermsT/T (30% deposit + 70% balance), L/C at sight
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