S320GD Steel
S320GD steel chemical composition is tailor-made for high durability and corrosion resistance, and is thus great for structural applications. It usually has low carbon, manganese, phosphorus, and sulfur levels to strike a balance between strength and workability. S320GD has improved galvanization properties from the zinc coating, granting higher protection against environmental wear and corrosion when compared with other steel grades like S235 or S355. This particular patch of qualities gives it a set of features that make it an apt choice in construction and in fabrication.
Chemical Composition
| Grade | C | Si | Mn | P | S |
|---|
| S320GD | ≤0.2 | ≤0.6 | ≤1.7 | ≤0.1 | ≤0.045 |
*According to EN 10346-2015.
Mechanical Properties
| Grade | Tensile Strength (σb, MPa) | Yield Strength (σs, MPa) | Elongation (δ, %) |
|---|---|---|---|
| S320GD+Z | ≥390 | ≥320 | A80: ≥17 |
| S320GD+ZF | |||
| S320GD+ZA | |||
| S320GD+ZM | |||
| S320GD+AZ | |||
| S320GD+AS |
*According to EN 10346-2015.
*The following minimum elongation values apply for different thicknesses:
0.5mm < t ≤ 0.7mm: minimum elongation is reduced by 2% from the values in the table.
0.35mm < t ≤ 0.5mm: minimum elongation is reduced by 4% from the values in the table.
t ≤ 0.35mm: minimum elongation is reduced by 7% from the values in the table.
Features
S320GD galvanized steel could bring the following benefits to your project:
Tough Against Rust – Stands up to weather and doesn't rust easily.
Lasts Long – The zinc layer keeps it going strong for years.
Super Strong – Built to handle heavy-duty jobs without bending or breaking.
Saves Money – Less maintenance needed, so it's cost-effective.
Multi-Purpose – Fits a wide range of uses, from buildings to cars.
Easy to Shape – Flexible enough for all kinds of projects.
Easy to Weld – Works well with welding, so no hassle in production.
Clean Look – Smooth surface that looks good in visible applications.
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：
Can S320GD be used in prefabricated buildings?
Yes. It is widely used in prefabricated and modular construction systems due to its strength and corrosion resistance.
What is the difference between hot dip galvanized and electro-galvanized steel?
Hot dip galvanized steel has a thicker, more durable zinc coating and better corrosion resistance than electro-galvanized steel.
Is S320GD galvanized steel suitable for humid environments?
Yes. Especially with Z275 coating, it performs well in humid and moderately corrosive conditions.
What packaging is used for S320GD galvanized steel coils?
Standard export packaging includes waterproof wrapping, steel strapping, and protective edge guards.
Can S320GD galvanized steel be customized?
Yes. Thickness, width, coating weight, surface finish, and coil weight can be customized based on project needs.
