S280GD Galvanized Steel
S280GD is a strong, low-alloy structural steel that's widely used in construction and manufacturing. With a minimum yield strength of 280 MPa, it's tough enough for demanding structural tasks. The hot-dip zinc coating provides superior protection against corrosion, guaranteeing extended durability. Thanks to this blend of strength and protection, the S280GD is perfect for structural frames, roofing systems, and other heavy-duty applications.
The name S280GD is derived from European standard EN 10346 and stands for:
- S: Structural grade steel.
- 280: Minimum yield strength of 280 MPa.
- GD: Suitable for continuous hot-dip galvanization.
GNEE STEEL offers S280GD galvanized steel in various forms, including coils, sheets, and strips. Each product supports a range of metal coatings such as Z275, Z100, and AZ150, meeting rigorous quality standards.
Chemical Composition of S280GD Steel
| Element | Content (%) |
| Iron, Fe | 98-99 |
| Carbon, C | 0.1-0.2 |
| Manganese, Mn | ≤ 1.2 |
| Phosphorus, P | ≤ 0.12 |
| Sulfur, S | ≤ 0.045 |
| Silicon, Si | ≤ 0.5 |
| Nitrogen, N | ≤ 0.012 |
| Aluminum, Al | ≤ 0.015 |
Mechanical Properties of S280GD Steel
| Property | Metric | Imperial |
| Tensile Strength | 360-440 MPa | 52-64 ksi |
| Yield Strength | ≥ 280 MPa | ≥ 40.6 ksi |
| Brinell Hardness | 110-140 HB | 110-140 HB |
| Rockwell Hardness | 65-75 HRB | 65-75 HRB |
| Vickers Hardness | 120-140 HV | 120-140 HV |
| Elongation | 20-26% | 20-26% |
| Elastic Modulus | 210 GPa | 30,500 ksi |
| Fracture Elongation (≤ 0.7mm) | ≥ 16% | ≥ 16% |
| Fracture Elongation (> 0.7mm) | ≥ 18% | ≥ 18% |
| Coating Adhesion (Bend Radius) | 0T-2T (0-2x thickness) | 0T-2T (0-2x thickness) |
Features
S280GD galvanized steel sheets/plates could bring the following benefits to your project:
Built to Last – The galvanized coating protects against rust, giving you longer-lasting materials.
Easy to Work With – Whether you need to cut, bend, or weld, it's simple to process.
Strong and Durable – Offers great strength to handle demanding applications and ensure structural reliability.
Weather-Resistant – Performs well in tough conditions, resisting moisture and outdoor elements.
Light and Practical – It's lighter than many alternatives, which helps with both transport and installation.
Smooth and Ready to Use – The surface is clean and smooth, ideal for painting or immediate use.
Great Value – Offers solid performance at a cost-effective price, making it a smart choice for many projects.
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 |
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 |
- |
FAQ：
What is the minimum elongation?
Minimum elongation A80 is typically 18 % (varies slightly with thickness).
What thicknesses are available for S280GD sheet/coils?
Thickness can range from about 0.12 mm up to 6.0 mm or more upon request.
Can S280GD be supplied with customized widths and lengths?
Yes - widths (e.g., 600–2000 mm) and lengths/coils can be customized.
What types of galvanization processes are used?
It supports hot-dip galvanizing, electro-galvanizing, and pre-galvanizing.
How thick can the zinc coating be?
Zinc coating weights typically range from Z30 to Z600 g/m² double-sided.
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.
