| Grade | SGCC/DC51D/DX51D/DX52D/SGSS/SGCD1/SGCD2/SGCD3 |
| Thickness | 0.12-3.5 mm |
| Width | As customer's request |
| Spangle | regular/mini/big/zero spangle |
| Zinc coating | 30~275G/M2 |
| Hardness | Soft hard(HRB60),medium hard(HRB60-85),full hard(HRB85-95 |
| Length | regular/mini/big/zero spangle |
| Packing | Standard seaworthy export packing |
| Delivery | Within 7-15days |
| Regular Order | 25 tons or one container, for less quantity, to contact with us for details |
| Productivity | 20000 tons per month |
Overview
The Multi-Grade Hot-Dipped Galvanized Steel Sheet (DX51D/DX52D/DX54D) is a versatile metallurgical product designed to meet the varied forming and corrosion resistance needs of modern fabrication. Available in three DX grades—DX51D (general purpose), DX52D (deep drawing), and DX54D (extra-deep drawing)—this sheet features a hot-dip zinc coating (Z60-Z275g) on a low-carbon steel substrate, balancing ductility, strength, and rust protection for diverse applications.
Manufactured to international standards (ASTM A653, EN 10143), the sheet is available in thicknesses from 0.3mm to 3.0mm and sizes up to 3000x1500mm, with spangle or spangle-free surface finishes. The hot-dip process ensures a uniform coating that adheres tightly to the steel, providing long-lasting protection in both indoor and outdoor environments.
Features
Grades for Every Fabrication Need:
DX51D (General Purpose): Suitable for simple bending and cutting (bend radius: 2x thickness), ideal for brackets, shelves, and signage (e.g., IKEA metal shelving units).
DX52D (Deep Drawing): Higher ductility (elongation: ≥26%) for moderate stamping, used in appliance panels (e.g., LG refrigerator doors) and automotive interior parts (e.g., Ford dashboard brackets).
DX54D (Extra-Deep Drawing): Maximum formability (elongation: ≥34%) for complex shapes like fuel tanks (e.g., Tesla battery enclosures) and vehicle door panels (e.g., BMW car bodies).
Customizable Corrosion Protection:
Z60-Z120: For indoor/dry environments (e.g., server racks, electrical enclosures), offering basic rust protection at economy prices.
Z180-Z275: For outdoor/humid environments (e.g., roofing, marine containers), with Z275 providing 2x longer life than Z180 in coastal zones (e.g., Singapore industrial buildings).
Surface Finish Options:
Spangled Surface: Natural crystalline pattern for enhanced corrosion resistance in exposed applications (e.g., shipping container roofs, outdoor storage tanks).
Spangle-Free Surface: Smooth finish for painting, powder coating, or decorative use, achieving a uniform appearance in visible applications (e.g., retail store displays, architectural cladding).
Precision Engineering:
Tight thickness tolerance (+/-0.02mm) and flatness control (≤5mm/m) ensure consistent performance in automated fabrication lines (e.g., robotic stamping cells).
Edge conditioning (deburred and rounded) reduces the risk of coating damage during handling, improving safety and process efficiency.
Application
General Fabrication: Forms brackets, racks, and storage solutions with DX51D, combining easy cutting/bending with basic rust protection for indoor use (e.g., Amazon warehouse shelving).
Appliance Manufacturing: Uses DX52D for stamping refrigerator doors, washing machine drums, and air conditioner casings, requiring moderate formability and surface smoothness (e.g., Whirlpool appliance production).
Automotive Industry: Employs DX54D for deep drawing automotive body panels, fenders, and hoods, with Z180 coating protecting against road debris and moisture (e.g., Toyota car manufacturing).
Construction & Roofing: Utilizes Z275-coated sheets for outdoor applications like corrugated roofing (e.g., Australian farm sheds), cladding, and structural supports in high-humidity regions (e.g., Florida residential homes).
FAQ
Q: How do I determine the right DX grade for my stamping process?
A: Use DX51D for simple bends (e.g., 90° angles), DX52D for moderate curves, and DX54D for complex shapes with sharp radii (e.g., spherical components).
Q: Can these sheets be used in high-temperature environments up to 300°C?
A: Zinc coatings are stable up to 200°C; for 200-300°C, consider galvalume (AZ100) or stainless steel alternatives to prevent zinc oxidation.
Q: What is the difference between "hot-rolled" and "cold-rolled" galvanized sheets?
A: Hot-rolled sheets (rougher surface) are more cost-effective for thick gauges and structural use; cold-rolled (smooth surface) are ideal for precision stamping and aesthetic applications.
Q: Do these sheets require a primer before powder coating?
A: A zinc-rich primer is recommended for optimal adhesion, especially on spangled surfaces; this enhances corrosion resistance for cut edges and fastener holes.
