Hot-dip 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.
Properties according to DIN EN 10 346
Steel type
| Short designation | Surface finish | Material number |
| S250GD | +Z,+ZF,+ZA,+ZM,+AZ,+AS | 1.0242 |
S250GD | 1.0242: Mechanical properties (longitudinal)
| Proof stress Rp0,21) MPa min. | Tensile strength Rm2) MPa min. |
Elongation at fracture A803) % min. |
| 250 | 330 | 19 |
S250GD | 1.0242: Chemical composition (heat analysis)
| Percentage by weight % max. | ||||
| C | Si | Mn | P | S |
| 0.20 | 0.60 | 1.70 | 0.10 | 0.045 |
Features
S250GD galvanized steel sheets/plates could bring the following benefits to your project:
- Strong Against Rust – The galvanized coating helps it last longer.
- Built to Last – It has great strength for heavy-duty use.
- Easy to Work With – Simple to cut, weld, and shape as needed.
- Looks Good – A smooth surface that's easy to paint, enhancing its appearance.
- Budget-Friendly – Offers great value for performance.
- Lightweight – Easy to transport and install without extra hassle.
- Eco-Friendly – Made from recyclable materials, supporting sustainability.
Application Scenarios
S250GD+Z galvanized steel performs particularly well in the following environments:
1. Structural Building Components
Galvanized steel sheets are integral to modern construction due to their reliability and longevity.
- Roof decking and wall cladding
- Load-bearing purlins and columns
- Secondary framing for curtain walls
Buildings exposed to coastal climates or industrial pollution benefit from the sacrificial protection of galvanization, helping stave off rust and structural degradation.
2. Agricultural and Farm Structures
Agricultural facilities require materials that withstand humidity and chemical exposure from fertilizers and animal waste. S250GD+Z is commonly used in:
- Barn siding and roofing
- Livestock enclosures
- Feed storage structures
- Equipment shelters
The durable coating reduces maintenance time, allowing farmers to focus on operations rather than corrosion issues.
3. Solar Farm and Renewable Installations
With the rise of renewable energy projects, galvanized structural products are increasingly specified for:
- Solar panel mounting frames
- Support structures for tracking systems
- Light-weight galvanized arrays
The combination of corrosion resistance and strength ensures long service life in outdoor energy installations.
We also produce galvanized steel of other grades:
|
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 |
