Hot dip galvanized S320GD steel
Hot dip galvanized S320GD steel is a high-strength steel. "320" indicates the minimum yield strength of 320 MPa. S320GD steel is widely recognized for its excellent formability, strength, and superior corrosion protection. It can be produced through hot rolling and cold rolling, with a hot dip galvanizing treatment applied. It is extensively utilized in fields such as the vehicle manufacturing and building industries.
GNEE STEEL provides S320GD in the form of coils and strips, ensuring high-quality material for diverse projects.
S320GD Galvanized Steel Strip Specifications
| Specification | Metric (mm) | Imperial (inch) |
| Thickness | 0.3 – 3.0 mm | 0.012 – 0.118 in |
| Width | 20 – 600 mm | 0.79 – 23.62 in |
S320GD Galvanized Steel Coil Specifications
| Specification | Metric (mm) | Imperial (inch) |
| Thickness | 0.3 – 3.0 mm | 0.012 – 0.118 in |
| Width | 600 – 1500 mm | 23.62 – 59.06 in |
GNEE STEEL offers S320GD steel coils and strips in various widths and thicknesses. We also supply S320GD galvanized steel with custom specifications to meet diverse industry needs.
Properties
S320GD combines high strength with good formability and corrosion resistance. The minimum yield strength Rp0.2 of 320 N/mm² and a characteristic tensile strength (Rm) of at least 390 N/mm² ensure reliable load-bearing capacity even under changing load conditions. The elongation at break A80 of at least 17 % also allows safe forming and profiling processes.
The hot-dip galvanizing options offer the following specific advantages:
+Z (pure galvanized):
Standard corrosion protection for general conditions.
+ZF (zinc-iron):
Improved coating adhesion and increased resistance to mechanical stress.
+ZA (zinc-aluminium):
Optimized resistance in atmospheric environments.
+ZM (zinc-magnesium):
Extended protection in maritime and saline zones through passivating behavior.
+AZ (aluminum-zinc):
Combination of heat resistance and corrosion protection, ideal for high surface temperatures.
+AS (aluminum-silicon):
Especially for applications with extreme temperature influences and high corrosion loads.
In addition, S320GD has a homogeneous microstructure, good weldability and excellent dimensional stability, which enables precise further processing in cutting, bending and welding processes.
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:
What thickness range is available for S320GD galvanized steel?
S320GD galvanized steel is commonly available from thin gauges (around 0.35 mm) up to structural thicknesses of 6.0 mm or more, depending on supply capability.
What surface finishes are available for S320GD galvanized steel?
Typical surface finishes include regular spangle, minimized spangle, and zero spangle, depending on application requirements.
How long does S320GD+Z275 galvanized steel last?
In normal environments, S320GD+Z275 can provide corrosion protection for 15–30 years, depending on exposure conditions.
What is the tensile strength of S320GD galvanized steel?
The tensile strength typically ranges from 420 MPa to 550 MPa.
Is S320GD galvanized steel suitable for structural framing?
Yes. It is specifically designed for structural use, offering reliable strength and durability for framing systems.
Can S320GD galvanized steel be painted?
Yes. Galvanized steel can be painted after proper surface treatment, such as cleaning or light passivation.
