S280GD Steel
Hot-dip galvanized steel S280GD in accordance with the EN 10346 standard is a high-quality structural steel that has been specially developed for use in structural engineering and building construction. With the material number 1.0244, S280GD has a minimum yield strength Rp0.2 of 280 N/mm² and thus joins the higher strength classes of galvanized structural steels. Hot-dip galvanizing in accordance with EN 10346 guarantees a uniform zinc coating on the steel surface, which effectively protects the base material against corrosion. Thanks to the various coating systems (+Z, +ZF, +ZA, +ZM, +AZ and +AS), the material can be precisely adapted to different climatic and mechanical stresses.
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.
Characteristics of S280GD Steel
Compared with other brands on the market, our S280GD steel provides higher reliability and longer service life through stricter production processes and innovative surface treatments.
Higher yield strength
The yield strength of S280GD steel reaches 280 MPa, which is 30% higher than the common S250GD steel. This means that our steel can withstand greater loads, ensuring the stability of the structure under extreme conditions, and is suitable for projects that require high durability and load capacity, such as construction and the automotive industry.
Excellent corrosion resistance
Our S280GD uses advanced coatings such as +Z and +ZM, and its corrosion resistance far exceeds that of ordinary galvanized steel. Even in marine or harsh environments, S280GD can maintain a long service life, greatly reducing maintenance and replacement costs.
High cost performance and production efficiency
Although the strength and corrosion resistance of S280GD exceed similar products, its production process is similar to S250GD, ensuring higher cost performance. You can enjoy stronger performance while still maintaining reasonable costs, suitable for mass production and long-term use.
Superior processing performance
S280GD not only has excellent strength, but also has good ductility, and can be efficiently cold-bent and stamped. Compared with other brands of steel, it is easier to form and less prone to cracking, helping you save cost and time in production.
Welding and customization advantages
Our S280GD steel has good weldability and can be welded directly without complicated pretreatment. Compared with other steels, S280GD performs more stably during the welding process, reduces processing difficulty, and is suitable for high-precision customized parts.
Excellent heat reflection performance
S280GD steel equipped with aluminum-zinc coating has significantly better heat reflection ability than many brands on the market. It is particularly suitable for roof and facade insulation materials, which improves the energy efficiency of buildings and reduces later maintenance.
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) |
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:
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.
Can S280GD be welded?
Yes - it provides good weldability with proper techniques and care for the coating.
