NEWS
S250GD is a structural-grade steel specifically designed to be supplied in a galvanized condition, making it particularly suitable for environments where corrosion resistance is required alongside mechanical reliability. When used as S250GD Galvanized Steel, this grade offers a dependable balance between strength, durability, and processing efficiency.
Breaking down the designation helps clarify its meaning. The "S" indicates structural steel, suitable for load-bearing applications. The "250" represents the minimum yield strength of 250 MPa, ensuring predictable structural performance. The "GD" suffix refers to the steel's suitability for galvanizing, indicating that it is intended for hot-dip galvanized supply.
Hot-dip galvanizing significantly enhances the performance of S250GD steel. The zinc coating formed during galvanizing protects the steel from oxidation and corrosion, extending its service life. This is especially important for outdoor structures or components exposed to moisture, temperature fluctuations, and industrial atmospheres.
One of the advantages of S250GD Galvanized Steel is its compatibility with common fabrication methods. The grade maintains good ductility, allowing for cold forming and bending without compromising structural integrity. This makes it a preferred material for mass-produced structural components that require consistent quality and dimensional accuracy.
At GNEE STEEL, the production of S250GD galvanized steel focuses on coating uniformity and surface quality. Zinc coating weights are carefully controlled to meet different application requirements. Heavier coatings provide enhanced corrosion resistance for aggressive environments, while moderate coatings offer cost-effective protection for standard construction use.
- Common Supply Range of S250GD Galvanized Steel
| Parameter | Typical Value |
|---|---|
| Grade | S250GD |
| Condition | Galvanized (+Z) |
| Yield Strength | ≥ 250 MPa |
| Zinc Coating | Z140 / Z180 / Z220 |
| Surface Finish | Regular spangle / Minimized spangle |
| Thickness | 0.6 – 1.5 mm |
| Width | Up to 1500 mm |
Surface appearance plays a role in material selection, particularly for visible structural elements. Minimized spangle finishes provide a smoother and more uniform look, while also improving paint adhesion if additional coating is required. GNEE STEEL assists customers in selecting the most suitable surface treatment based on project requirements.
From an application perspective, S250GD Galvanized Steel is widely used for roofing and wall systems, structural supports, framing components, and infrastructure-related installations that require both corrosion resistance and structural reliability.
Beyond the material itself, supplier capability directly affects project outcomes. Consistency in chemical composition, mechanical performance, and coating thickness is critical for projects involving repeat orders or long construction timelines. GNEE STEEL maintains standardized production and inspection processes to ensure that each batch of S250GD galvanized steel meets specified requirements.
Another important factor is logistics and packaging. Proper protection during transportation helps prevent surface damage and white rust formation. GNEE STEEL applies appropriate packaging methods to preserve the quality of galvanized surfaces from factory to job site.
In summary, S250GD grade steel refers to a structural steel designed for galvanizing, offering a minimum yield strength of 250 MPa and strong corrosion resistance when coated with zinc. As S250GD Galvanized Steel, it provides a reliable, cost-effective solution for a wide range of construction and industrial applications. Customers seeking stable quality, technical expertise, and dependable supply are encouraged to contact GNEE STEEL for further information and tailored solutions.
|
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 |
