S250GD Galvanized Steel
Hot-dip galvanized steel S250GD in accordance with the EN 10346 standard is a high-quality structural steel that has been specially developed for use in the construction industry. With the material number 1.0242, S250GD has a minimum yield strength Rp0.2 of 250 N/mm² and is therefore classified in the medium strength classes of hot-dip galvanized structural steels. The EN 10346 standard not only specifies the chemical composition and mechanical properties, but also defines the hot-dip galvanizing process that creates a uniformly protective zinc coating on the steel surface. The available coatings +Z, +ZF, +ZA, +ZM, +AZ and +AS enable precise adaptation to different environmental conditions and load scenarios.
S250GD Galvanized Steel combines a carbon steel substrate with a hot-dip zinc coating. This coating forms a protective barrier that prevents moisture and oxygen from reaching the steel surface, significantly reducing the risk of rust. The minimum yield strength of 250 MPa allows the material to withstand structural loads without excessive deformation, making it suitable for a wide range of load-bearing applications.
The production of S250GD Galvanized Steel involves continuous hot-dip galvanizing, where steel strip passes through molten zinc under carefully controlled conditions. This process ensures uniform coating thickness and strong adhesion between the zinc layer and the base steel.
Typical Dimensional Range of S250GD Galvanized Steel
| Product Form | Thickness (mm) | Width (mm) |
|---|---|---|
| Steel Coil | 0.3–3.0 | 600–1500 |
| Steel Sheet | 0.4–3.0 | Customized |
| Steel Strip | 0.3–2.5 | Customized |
Zinc Coating and Tolerance Standards
| Standard | Zinc Coating Range | Thickness Tolerance |
|---|---|---|
| EN 10346 | Z100–Z275 | ±0.02–0.05 mm |
These production controls ensure that S250GD Galvanized Steel delivers consistent performance in both mechanical strength and corrosion protection.
Mechanical Performance in Structural Applications
S250GD Galvanized Steel is engineered to provide sufficient rigidity while maintaining flexibility for forming and fabrication. Its mechanical performance allows it to be cut, welded, and bent without compromising structural integrity.
Mechanical Property Overview
| Property | Typical Value |
|---|---|
| Yield Strength | ≥250 MPa |
| Tensile Strength | 330–410 MPa |
| Elongation | ≥19% |
This balance explains why S250GD Galvanized Steel is commonly selected for steel frames, purlins, and secondary structural members.
S250GD Compared with Other Structural Galvanized Steels
In practical applications, S250GD Galvanized Steel often sits between forming grades and high-strength structural grades. Compared to DX52D, S250GD provides higher yield strength, making it more suitable for structural use. Compared with S280GD, the difference lies mainly in yield strength, while S250GD offers slightly better formability and cost efficiency. Against S350GD, S250GD is easier to process and more economical for projects that do not require high-strength performance.
This positioning makes S250GD Galvanized Steel an ideal choice for projects that prioritize durability, processability, and cost control.
The zinc coating on S250GD Galvanized Steel provides sacrificial protection, meaning zinc corrodes before the base steel, extending the service life even in outdoor environments. With appropriate coating weight selection, S250GD Galvanized Steel can perform reliably for decades under normal atmospheric conditions.
S250GD Galvanized Steel is widely used in building structures, industrial equipment housings, storage systems, transportation facilities, and agricultural frameworks. Its versatility allows it to adapt to different fabrication methods and environmental conditions.
GNEE STEEL focuses on supplying high-quality S250GD Galvanized Steel with stable performance, uniform coating, and flexible customization options. With reliable production control and professional export experience, GNEE STEEL supports customers in achieving long-lasting and cost-effective solutions. For detailed technical data, sample requests, or project quotations, customers are encouraged to contact GNEE STEEL and initiate an inquiry with confidence.
|
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 |
