Galvanized steel
S280GD+Z275 galvanized steel, with a 275 g/m² zinc layer, provides excellent corrosion resistance and can be used in outdoor environments for more than 20 years. GNEE STEEL strict quality control ensures its long-term stability in a variety of environments.
S280GD is a non-alloy structural steel, made of about 98-99% iron and 0.1-0.2% carbon, meeting EN 10346 with a minimum yield strength of 280 MPa. It is a flat-rolled steel, typically hot-dip galvanized for corrosion resistance. In S280GD, "S" denotes structural steel, "280" the yield strength, and "GD" galvanization. It comes with finishes like +Z (zinc) and +ZF (zinc-iron), suitable for construction, automotive, and light engineering. Similar to FeE280G, it has an EU steel number of 1.0244.
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.
S280GD Galvanized Steel Products Specifications
S280GD galvanized steel is available in three primary forms at GNEE STEEL: coils, sheets, and strips. Each product form is designed to meet specific industry needs, offering various sizes and thicknesses suitable for a wide range of applications.
| Product | Thickness Range | Width Range | Length Range |
| S280GD Steel Coil | 0.30 mm to 3.00 mm (0.012″ to 0.118″) | 600 mm to 1500 mm (23.62″ to 59.06″) | Custom lengths available |
| S280GD Steel Sheet | 0.30 mm to 3.00 mm (0.012″ to 0.118″) | 600 mm to 1500 mm (23.62″ to 59.06″) | |
| S280GD Steel Strip | 0.30 mm to 2.50 mm (0.012″ to 0.098″) | 30 mm to 500 mm (1.18″ to 19.69″) |
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 typical tensile strength?
Minimum tensile strength is around 360 MPa.
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.
