DX51D/SGCC Galvanized Sheet
DX51D galvanized sheet is divided into cast zinc alloy and deformed zinc alloy. Commonly used cast zinc alloy is zinc aluminum copper magnesium alloy, its casting process performance is good, cooling speed has less effect on mechanical properties, more used in the manufacture of mechanical parts, toys, decorations, household appliances and so on. Commonly used deformation zinc alloys are zinc aluminum alloy and zinc copper alloy. The former contains 4% to 15% aluminum, in order to improve the strength and hardness of the alloy, but also add a small amount of copper, magnesium and other alloying elements. Its high strength can replace some brass or duralumin manufacturing precision forgings. The latter contains 0.7% to 1.5% copper, copper can increase alloy strength and impact toughness, and reduce plasticity.
Scope of Application
Galvanizing products are widely used in industry, agriculture, animal husbandry and fishery, energy, transportation, chemical industry, light industry, home appliances, construction, communications, national defense and other fields.
Product Parameters
| Product Name | DX51D/SGCC Galvanized Sheet |
| Thickness | 0.12mm-6.00mm |
| Width | 600mm-1500mm |
| Length | 1m-12m, Support Customization |
| Standard | AISI, ASTM, DIN, JIS, GB, JIS, SUS, EN, etc. |
| Zinc Layer | Hot Galvanizing: 60-275g/m² |
| Pre-galvanized: 80-275g/m² |
Chemical Composition
| Standard | Grade | C | Si | Mn | P | S | Ti |
| Forcold Forming Chinese Standard |
DX51D+Z | 0.12 | 0.5 | 0.6 | 0.1 | 0.045 | 0.3 |
| DX52D+Z | 0.12 | 0.5 | 0.6 | 0.1 | 0.045 | 0.3 | |
| DX53D+Z | 0.12 | 0.5 | 0.6 | 0.1 | 0.045 | 0.3 | |
| DX54D+Z | 0.12 | 0.5 | 0.6 | 0.1 | 0.045 | 0.3 | |
| DX56D+Z | 0.12 | 0.5 | 0.6 | 0.1 | 0.045 | 0.3 | |
| DX57D+Z | 0.12 | 0.5 | 0.6 | 0.1 | 0.045 | 0.3 | |
| Forcold Forming Japanese Standard |
SGCC | 0.15 | 0.5 | 0.8 | 0.05 | 0.03 | 0.025 |
| SGCD1 | 0.12 | 0.5 | 0.6 | 0.04 | 0.03 | 0.025 | |
| SGCD2 | 0.1 | 0.5 | 0.45 | 0.03 | 0.03 | 0.025 | |
| SGCD3 | 0.08 | 0.5 | 0.45 | 0.03 | 0.03 | 0.025 | |
| SGCD4 | 0.06 | 0.5 | 0.45 | 0.03 | 0.03 | 0.025 | |
| For Structure Japanese Standard |
SGC340 | 0.25 | 0.5 | 1.7 | 0.2 | 0.035 | 0.025 |
| SGC400 | 0.25 | 0.5 | 1.7 | 0.2 | 0.035 | 0.15 | |
| SGC440 | 0.25 | 0.5 | 2 | 0.2 | 0.035 | 0.15 | |
| SGC490 | 0.3 | 0.5 | 2 | 0.2 | 0.035 | 0.025 | |
| SGC510 | 0.3 | 0.5 | 2.5 | 0.2 | 0.035 | 0.025 | |
| For Structure
AISI Standard |
S220GD+Z | 0.2 | 0.6 | 0.7 | 0.1 | 0.045 | 0.025 |
| S250GD+Z | 0.2 | 0.6 | 0.7 | 0.1 | 0.045 | 0.025 | |
| S280GD+Z | 0.2 | 0.6 | 0.7 | 0.1 | 0.045 | 0.025 | |
| S320GD+Z | 0.2 | 0.6 | 0.7 | 0.1 | 0.045 | 0.025 | |
| S350GD+Z | 0.2 | 0.6 | 0.7 | 0.1 | 0.045 | 0.15 | |
| S550GD+Z | 0.2 | 0.6 | 0.7 | 0.1 | 0.045 | 0.15 |
Mechanical Properties
| Grade | Yield Strength MPa≥ | Tensile Strength MPa≥ | Elongation A%≥ |
| DX51D Z/ZM/AZ/AM | 240-380 | 270-500 | 22 |
| DX52D Z/ZM/AZ/AM | 140-300 | 270-420 | 26 |
| DX53D Z/ZM/AZ/AM | 140-260 | 270-380 | 30 |
| DX54D Z/ZM/AZ/AM | 120-220 | 260-350 | 36 |
| S220GD Z/ZM/AM | 220 | 300 | 20 |
| S250GD Z/ZM/AZ/AM | 250 | 330 | 19 |
| S280GD Z/ZM/AM | 280 | 360 | 18 |
| S300GD A/AM | 300 | 380 | 18 |
| S320GD Z/ZM/AM | 320 | 390 | 17 |
| S350GD Z/ZM/AZ/AM | 350 | 420 | 16 |
| S450GD A/AM | 450 | 480 | 15 |
| S550GD Z/ZM/AZ/AM | 550 | 550 | – |
Galvanized Surface Selection
| Use of The Environment | Recommended Zinc Thickness |
| Indoor Use | Z10 or Z12 (100g/㎡or 120g/㎡) |
| Suburbs | Z20 and Painting (200g/㎡) |
| Urban or Industrial Area | Z27 (270g/㎡) or G90 (US Standard) and painted |
| Coastal Area | Thicker than Z27 (270g/㎡) or G90 (US Standard) and painted |
| Punch or Deep Drawing Application | Thicker than Z27 (270grams/㎡) or G90 (US Standard) avoid coating peeling after stamping |
| Surface Treatment Type | Code | Features |
| Chromic Acid Treatment | C | Good corrosion resistance, suitable for bare state |
| Chromic Acid Treatment+Oiling | S | Good corrosion resistance |
| Phosphoric Acid Treatment (Including Sealing Treatment) | P | Have a certain corrosion resistance, good paint performance |
| Phosphoric Acid Treatment (Including Sealing Treatment)+Oiling | Q | Has a certain corrosion resistance, good paint performance, prevent rust during transportation and storage |
| Phosphoric Acid Treatment (Excluding Sealing Treatment) | T | Have a certain corrosion resistance, good paint performance |
| Phosphoric Acid Treatment (Excluding Sealing Treatment)+Oiling | V | Has a certain corrosion resistance, good paint performance, and prevent rust |
| Oiling | O | Prevent rust during transportation and storage |
| No Treatment | M | Suitable for immediate painting |
Material Comparison
| Chinese Standard | Japan Standard | European Standard |
| DX51D Z/DC51D Z (CR) | SGCC | DX51D Z |
| DX52D Z/DC52D Z | SGCD1 | DX52D With |
| DX53D Z/DC53D Z/DX54D Z/DC54D Z | SGCD2/SGCD3 | DX53D Z/DX54D Z |
| S220/250/280/320/350/550GD Z | SGC340/400/440/490/570 | S220/250/280/320/350GD Z |
| DX51D Z/DD51D Z (HR) | SGHC | DX51D Z |
