S280GD Hot-dip galvanized
The hot-dip galvanized steel S280GD in accordance with EN 10346 combines a high minimum yield strength of 280 N/mm² with first-class corrosion protection and excellent ease of processing. With its wide range of coating variants, it covers a broad spectrum of environmental and operating conditions – from moderate to extremely corrosive or thermally stressed environments. Whether roof and façade systems, drainage components or lightweight steel structures: S280GD offers construction companies and planners a durable, reliable and economical material solution for demanding construction projects.
S280GD Galvanized Steel Mecahmical Properties
| Property | Value | |
| Tensile Strength (Rm) | 360 MPa | |
| 0.2% Proof Strength (Rp0.2) | 280 MPa | |
| Min. Elongation (A, Lo = 80 mm) | – | 18% |
| 0.5mm < t ≤ 0.7mm | 16% | |
| 0.35mm < t ≤ 0.5mm | 14% | |
| t ≤ 0.35mm | 11% | |
| Bending Center Diameter (mm) | 1a | |
| S280GD tensile strength can range up to 140 MPa, depending on the specific material grade and processing conditions. | ||
S280GD Galvanized Steel Chemical Composition
| Element | Content (weight%) |
| Carbon (C) | ≤ 0.20 |
| Manganese (Mn) | ≤ 1.70 |
| Phosphorus (P) | ≤ 0.10 |
| Sulfur (S) | ≤ 0.045 |
| Silicon (Si) | ≤ 0.60 |
S280GD Steel Applications
Construction: Structural frameworks, roofing systems, wall panels, steel decking, and facade elements.
Automotive: Underbody components, reinforcements, brackets, door panels, and exhaust system parts.
Appliances: Washing machine drums, dryer housings, refrigerator panels, HVAC enclosures, and water heater tanks.
Agricultural Equipment: Silos, storage bins, farming machinery components, and greenhouse structures.
S280GD Steel Properties
High Corrosion Resistance:
The hot-dip galvanizing process creates a durable zinc coating that effectively prevents rust, ensuring the steel can withstand prolonged exposure to humidity and wet conditions.
Enhanced Structural Stability:
S280GD maintains its mechanical performance under both static and dynamic loads, making it reliable for load-bearing frameworks and dynamic structures like bridges and cranes.
Excellent Formability:
This steel grade can be easily shaped into complex components such as roofing profiles, wall cladding, and structural panels without cracking or losing surface quality.
Strong Coating Adhesion:
The zinc coating is tightly bonded to the steel surface, ensuring long-term corrosion protection even after cutting, bending, or forming.
Outstanding Weather Resistance:
S280GD resists environmental wear in harsh climates, including prolonged exposure to rain, snow, and temperature fluctuations, ensuring a consistent performance over time.
High Heat Reflectivity and Insulation Capability:
Its surface can reflect a significant amount of radiant heat, helping to maintain stable interior temperatures in structures and making it an effective material for energy-efficient roofing or insulation.
Available Steel Grade
|
Standard |
Grade |
C |
Si |
Mn |
P |
S |
Ti |
|
Forcold Forming Chinese Standard |
DX51D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
DX52D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
|
DX53D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
|
DX54D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
|
DX56D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
|
DX57D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
|
Forcold Forming Japanese Standard |
SGCC |
0.15 |
0.50 |
0.80 |
0.050 |
0.030 |
0.025 |
|
SGCD1 |
0.12 |
0.50 |
0.60 |
0.040 |
0.030 |
0.025 |
|
|
SGCD3 |
0.08 |
0.50 |
0.45 |
0.030 |
0.030 |
0.025 |
|
|
SGCD4 |
0.06 |
0.50 |
0.45 |
0.030 |
0.030 |
0.025 |
|
|
For Structure Japanese Standard |
SGC340 |
0.25 |
0.50 |
1.70 |
0.200 |
0.035 |
0.025 |
|
SGC400 |
0.25 |
0.50 |
1.70 |
0.200 |
0.035 |
0.150 |
|
|
SGC490 |
0.30 |
0.50 |
2.00 |
0.200 |
0.035 |
0.025 |
|
|
SGC510 |
0.30 |
0.50 |
2.50 |
0.200 |
0.035 |
0.025 |
|
|
For Structure AISI Standard |
S220GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.025 |
|
S250GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.025 |
|
|
S280GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.025 |
|
|
S320GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.025 |
|
|
S350GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.150 |
|
|
S550GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.150 |
FAQ：
Is S280GD suitable for outdoor and corrosive environments?
Yes - the zinc or alloy coatings significantly improve corrosion resistance.
What are common applications of S280GD?
Applications include roofing, wall cladding, structural frames, automotive parts, appliances, and HVAC systems.
Is S280GD easy to form and fabricate?
Yes - it has good bendability and formability for cold forming and roll forming processes.
Can S280GD be welded?
Yes - it provides good weldability with proper techniques and care for the coating.
How should S280GD be stored to maintain quality?
Store in a dry, ventilated place away from moisture to preserve the coating and prevent rust. (Based on standard best practices)