DX52D Hot Dipped Galvanized Steel Sheet at a Glance
DX52D is a continuously hot dip zinc coated, cold rolled steel sheet specified for forming applications and widely used as the substrate for colour coated products. The grade sits between the general purpose DX51D and the more formable DX53D, so it balances good drawing behaviour with stable mechanical properties. The zinc coating is applied on a continuous line, giving a uniform layer with an adjustable coating weight that can be matched to indoor or outdoor service.
Standard Specification Range
| Parameter | Range |
|---|---|
| Thickness | 0.12 mm to 10.0 mm, also customised |
| Width | 500 mm to 2000 mm, also customised |
| Length | 1000 mm to 6000 mm, also customised |
| Zinc coating | 20 g/m2 to 400 g/m2, designations such as g30, g40, g60, g90, Z20 to Z29 and Z81 to Z120 |
| Surface treatment | Anti-fingerprint, skin pass, oiled, dry, chromated, embossed and laminated |
| Spangle | Zero spangle, mini spangle, regular spangle and large spangle |
| Edge | Mill edge or cut edge |
| Hardness | Soft below 60 HRB, medium 60 to 85 HRB, full hard 85 to 95 HRB |
| Tolerance | Plus or minus 1 percent |
Standards and Grades
The sheet is normally ordered against EN 10346, which covers continuously hot dip coated steel flat products, together with GB/T 2518 for continuously hot dip zinc coated steel sheet and strip, JIS G 3302, ASTM A653/A653M and ISO 3575. Grades in this family include DX52D and DX52D+Z, alongside CS Type A, CS Type B, SGCD2 and SECC when a buyer's drawing calls for them.
Where a project needs electrolytically zinc coated sheet instead of a hot dip coating, that product family is specified under its own electroplating standards such as EN 10152 rather than EN 10346. The two coating routes have different coating structures and should not be ordered under a single designation.
Zinc Coating, Spangle and Surface Treatment Options
Coating weight is quoted as the total zinc mass on both sides in grams per square metre. A light coating around 20 g/m2 to 60 g/m2 is enough for parts that stay indoors and dry, while 180 g/m2 and above is chosen for roofing, cladding and other exposed work. Spangle describes the visible zinc crystal pattern: regular spangle is the natural as-coated surface, mini and zero spangle are produced by controlling the cooling and by skin passing the strip, and skin pass spangle refers to a lightly rolled surface. Anti-fingerprint and oiled finishes reduce handling marks and temporary corrosion during storage and transport, while chromated and chromium-free passivation layers improve resistance to white rust.
Quality Control, Processing and Delivery
Typical inspection covers zinc coating thickness or coating weight, salt spray testing, coating adhesion, tensile properties and bend testing. Visible defects such as uncoated areas, holes, cracks, dross, excessive coating, scratches and white rust are controlled by the appearance standard agreed at order. Thickness tolerance is generally held within plus or minus 1 percent, and flatness, camber and edge condition are checked so that the sheet behaves predictably on automatic forming lines.
The material can be supplied cut to length or as coil, and it is suitable for bending, welding, decoiling, cutting and punching. Sheets are stacked in bundles or supplied in bulk, with customised packing for export. A typical delivery window for standard sizes is seven to fifteen days after the order is placed, and invoicing can follow actual weight. Because the zinc coating is soft, handling equipment should be padded and bundles should be kept dry during storage to avoid white rust.
Frequently Asked Questions
Q: What is DX52D galvanized steel sheet used for?
It is used for formed parts and as the substrate for colour coated sheet, including appliance panels, building cladding, ceiling systems, doors and general fabrication.
Q: How does DX52D differ from DX51D and DX53D?
DX51D is the general purpose forming grade, DX52D offers better drawing behaviour with good surface quality, and DX53D is the most formable of the three for deep drawn parts.
Q: What zinc coating weight should be specified?
Coating weight depends on exposure. Indoor parts often use 20 g/m2 to 60 g/m2, sheltered outdoor work around 100 g/m2 to 180 g/m2, and exposed roofing or cladding 180 g/m2 and above.
Q: Does the sheet accept painting after delivery?
Yes. DX52D is commonly used as a painting substrate, and the standard anti-fingerprint, oiled or chromated finishes are designed to keep the surface suitable for subsequent coating.
Q: Can the sheet be supplied cut to size?
Yes. Thickness, width and length can all be produced to order, and the material can be supplied as flat sheet, plate or coil according to the fabricator's process.
Q: What surface defect limits apply?
Uncoated areas, holes, cracks, dross, excessive coating, scratches and white rust are controlled by the agreed appearance standard, and samples are normally approved before volume production.