Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of dc52d+zm zinc aluminum magnesium steel coil in China. Welcome to wholesale customized dc52d+zm zinc aluminum magnesium steel coil at low price from our factory. If you have any enquiry about free sample and cheap products, please feel free to email us.
Products Description
DC52D+ZM refers to cold-rolled substrate, drawing grade, hot-dip zinc-magnesium alloy coated steel sheet, normally complied with GB/T 2518 and Q/BQB 420 standards.
- D: Flat steel for cold forming.
- C: Cold rolled substrate.
- 52: Steel grade index, representing drawing quality grade with better formability than DC51D.
- D: Code for hot-dip coating.
- +ZM: Hot-dip zinc-magnesium alloy coating (Zn-Mg). The coating contains about 1.0–2.0% magnesium and 0.8–3.0% aluminum, providing much higher corrosion resistance than conventional pure zinc coating (+Z).
Specification
| Name | Zinc Aluminum Magnesium alloy Coating |
| Grade | Low carbon steel:DC51D+ZM,DC52D+ZM,DC53D+ZM High Strength IF steel:HC220YD+ZM, HC260YD+ZM Double phase steel:HCT450X+ZM,HCT590X+ZM Structure steel:S250GD+ZM~S550GD+ZM HSLA steel:HC260LAD+ZM ~HC340LAD+ZM |
| Thickness | 0.15-6 mm |
| Width | 5-1600 mm |
| Coating thickness | 40-450 g/m²(Both sides) |
| HS code | 72104900 |
| Origin | China |
| Transport Package | Standard Export Seaworthy Package |
| Surface process | Passivation, fingerprint resistant, oiled |
| Stock | Daily stock 7000-12000 tons fast delivery within 7~15 working days. |
The Advantages of ZAM (Why Choose ZAM?):
1) Zn-Al-Mg coating has better corrosion resistance, and the increase of Al and Mg content in a certain range makes the corrosion resistance of Zn-Al-Mg coated steel sheet increase several times times higher than that of galvanized steel sheet.
2)The Zn-Al-Mg coating has good welding performance, and the addition of magnesium can reduce the spatter of the weld attachment in the laser welding process and improve the welding performance.
3) Zinc-coated Al-Mg products of GNEE STEEL are composed of Zn-2.0% Al-1.5Mg. The products can be used in construction, household appliances and automotive industries.
4)Production Specification of Zinc, Aluminum and Magnesium Coating Products : 0.4-2.0mm×1000-1600mm u ZAM coating product specifications:0.4-2.0mm×1000-1600mm
Main Applications
Automotive: Body panels, chassis parts, seat slide rails.
Home Appliances: Refrigerator and washing machine shells, structural components.
Construction: Roofing, wall cladding, photovoltaic brackets (for coastal and highly corrosive environments).
Others: Outdoor cabinets, ventilation ducts, hardware stamping parts.
Similar Grade Comparison
DC51D+ZM: General purpose grade with average formability.
DC52D+ZM: Drawing grade with excellent formability (most widely used).
DC53D+ZM: Deep drawing grade for complex stamping parts.
DC54D+ZM: Extra deep drawing grade for ultra-complex forming processes.
FAQ
1. What is ZAM and how does it differ from GI?
Ans: ZAM is a highly corrosion-resistant alloy coating consisting of Zinc, Aluminum (typically 5-11%), and Magnesium (up to 3%). Unlike standard Galvanized Steel (GI), the addition of Magnesium creates a stable, dense protective barrier, offering 5–10 times the corrosion resistance of pure zinc coatings.
2. What is the "Self-Healing" property?
Ans: This is ZAM's most critical advantage. On cut edges or scratches, magnesium ions migrate to form a fine, stable protective film (simonkolleite). This chemical reaction effectively seals the exposed steel, preventing red rust without requiring edge paint.
3. Can ZAM replace Batch Hot-Dip Galvanizing (HDG)?
Ans: Yes. ZAM allows for "pre-coated" processing. You can punch, bend, and cut ZAM coils directly, eliminating the need for post-fabrication galvanizing. This reduces logistics costs, lead times, and avoids thermal deformation of parts.
4. How does it perform in harsh environments?
Ans: ZAM excels in high-alkaline and acidic environments. It is the preferred material for livestock housing (ammonia resistance), photovoltaic (PV) brackets, and coastal infrastructure where salt spray is prevalent.
5. Can I use a thinner coating to replace thick Zinc?
Ans: Generally, yes. Due to its superior durability, a 275g/㎡ ZAM coating can often replace a 600g/㎡ traditional HDG coating, allowing for material weight reduction and cost savings without compromising service life.
Hot Tags: dc52d+zm zinc aluminum magnesium steel coil, China dc52d+zm zinc aluminum magnesium steel coil manufacturers, suppliers, factory, galvanized steel demand, galvanized steel standard supplies, galvanized steel producer, galvanized steel exporter, galvanized steel upgrade price, galvanized steel surface treatment supplies
