Galvanized Steel Coil
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 Coil Chemical Composition
| Element | Maximum Content (%) |
| Carbon (C) | 0.2 |
| Silicon (Si) | 0.6 |
| Manganese (Mn) | 1.7 |
| Phosphorus (P) | 0.1 |
| Sulfur (S) | 0.045 |
S250GD Galvanized Steel Coil Mecahmical Properties
| Property | Value |
| Tensile Strength (Rm) | ≥ 250 MPa |
| 0.2% Proof Strength (Rp0.2) | ≥ 330 MPa |
| Minimum Elongation (Lo = 80 mm) (A) | ≥ 19% |
S250GD Steel Equivalent Grade
| Standard | Equivalent Grade |
| BS | FeE250G |
| ASTM | Grade B (ASTM A 466 M) |
| GB | Q235 |
| JIS | SGC340 |
The production process for galvanized steel is as follows.
Gulping a steel sheet into a vat of molten zinc is the process that produces galvanized steel. When the zinc melts, it forms a protective layer that sticks to the steel. The two most common ways to galvanize steel are electrogalvanizing and hot-dip galvanizing.
One typical process is hot-dip galvanizing. To undergo hot-dip galvanizing, steel sheets are heated to about 800 degrees Fahrenheit and then submerged in a bath of molten zinc. An approximately 0.002 to 0.006 inch thick layer of melted zinc is formed.
Less often used is electrogalvanizing. A bath of zinc ions is used to electrogalvanize the steel sheet. By passing an electric current through the steel, the zinc ions are deposited onto its surface. Between 0.0002 and 0.0005 inches thick is the zinc layer.
S250GD Galvanized Steel Advantages
Our S250GD galvanized steel excels in strength, durability and processability, helping customers easily meet various needs in the construction and manufacturing fields with high performance and cost-effectiveness:
High strength and good stability: S250GD guarantees a yield strength of at least 250 MPa, which can maintain structural stability under high loads, while many similar products are slightly lacking in strength.
Excellent ductility and suitable for forming: S250GD has a higher elongation after fracture than ordinary steel on the market, and is not easy to crack during the forming process, making it very suitable for complex processing.
Excellent corrosion resistance: We have optimized the galvanizing process to ensure that the steel can be used for a long time in humid or highly polluted environments, reducing corrosion losses, while other products have a relatively short service life in these environments.
Good weldability and more convenient construction: It can be easily welded without preheating, saving construction time and cost, while other materials usually require more processes.
Environmentally sustainable: S250GD has a high recycling rate and meets green manufacturing standards, making it an ideal choice for environmentally friendly projects.
|
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 |
GNEE STEEL continues to monitor industry trends and adjust its production strategy to align with market needs. By offering flexible zinc coating options and surface finishes, GNEE STEEL ensures that S250GD galvanized steel remains adaptable to various project requirements.
For customers seeking stable supply and technical guidance on S250GD Galvanized Steel, GNEE STEEL provides professional support throughout the project lifecycle.
